#ruby on 2015-03-31 — irc logs at freenode.irclog.whitequark.org

2015-03-29 19:55 apeiros changed the topic of #ruby to: http://ruby-community.com || Ruby 2.2.1; 2.1.5; 2.0.0-p643: https://ruby-lang.org || Paste >3 lines of text on https://gist.github.com || log @ http://irclog.whitequark.org, other public logging is prohibited

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00:03 <d0t> HI

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00:04 <havenwood> hi

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00:05 <GaryOak_> yo yo yo

00:05 <d0t> :DD

00:05 <d0t> Hi Gary0ak

00:05 <GaryOak_> hey

00:05 <d0t> How are you ?

00:06 <GaryOak_> dorei: and even while being ddosed they had pretty decent service

00:06 <GaryOak_> d0t: I'm good

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00:06 <GaryOak_> How are you?

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00:06 <d0t> Fine

00:06 <GaryOak_> Here to ask a ruby question?

00:07 <dorei> i have a rather general question

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00:07 <dorei> let's say I paginate over a dataset, what happens if more data are added into the DB while I paginate?

00:07 <dorei> shouldn't I execute the whole query and fetch all data without limit, put them in some temp table or some cache mechanism and then paginate over there?

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00:08 <GaryOak_> dorei: depends how you are using the data

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00:09 <dorei> GaryOak_: what are my options? :)

00:09 <GaryOak_> If you're talking about paginating in the web browsing sense

00:10 <dorei> yeap, in that sense

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00:11 <GaryOak_> it's not terribly costly to do a database call every page request

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00:12 <GaryOak_> cache is good for data that isn't going to change all that often

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00:13 <dorei> let me be more specific, i do select something from something limit 1, 25, that first page, when one clicks next page, i do the same select but with limit 26, 25

00:13 <dorei> but meanwhile new data are added in the db so there are gaps between the two pages

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00:14 <henrikhodne> `LIMIT OFFSET` can be a bit costly depending on the size of the data set, though, especially if you go through a lot of pages. If you are fine with "next page" and "previous page" only, this page has some suggestions for how to use the database to handle this: http://use-the-index-luke.com/sql/partial-results/fetch-next-page

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00:15 <GaryOak_> also if you are having that much change between page requests, you probably should think about another nav mechanic besides pagination

00:15 <dorei> henrikhodne: thanx :)

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00:15 <GaryOak_> or like henrikhodne mentioned just do a prev/next

00:15 <henrikhodne> The short version is order by something deterministic like (date, id) (or just id if that's sufficient), then instead of storing the page number in the URL, you do something like after_date=...&after_id=...

00:16 <dorei> got it :)))

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00:45 <shevy> totimkopf nah, I just was there years ago and noticed the many cats. here in vienna we don't really have stray cats, at least not in masses

00:46 <dorei> shevy: dont you have problems with mice?

00:46 <totimkopf> that's because they eat cats in Austria

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00:47 <shevy> dorei yeah, lots of mice, my cat catches a few of them every now and then. but they are really small mice, I think the largest was about... 14 cm or so, perhaps they were just baby mice who were dumb enough to get caught

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00:48 <dorei> more stray cats => less stray mice

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00:50 <dorei> time for some sleep, gnight all :)

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01:56 <shevy> hmm

01:57 <shevy> Would you say that a Hash is more powerful than an Array?

01:57 <rager> "yes"?

01:57 <Radar> !8ball

01:57 <helpa> Signs point to yes.

01:57 <Radar> HELPA HAS SPOKEN

01:57 <rager> it's a meaningless question, imo

01:57 <Radar> but please define "powerful"

01:58 <sevenseacat> its approximately 23% more powerful.

01:58 <rager> you could implement the Array interface backed by a Hash

01:58 <rager> and vice versa

01:58 <rager> the latter would be... painful

01:59 <shevy> yeah

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02:06 <rager> "stateless" session token that contains an hmac signed user id *OR* "stateful" session token that is a key to some storage that contains user id

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02:06 <rager> how much is being truly stateless worth?

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02:10 <Radar> what is that token going to be used?

02:10 <Radar> used for*

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02:29 <rager> Radar: iOS and ajax app

02:29 <rager> not sure, but I think the users are probably going to be more sporadic, so the tokens will be pretty long-lived

02:30 <rager> currently, they just kinda last forever, but we can easily invalidate them

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03:08 <dustpan> ls

03:08 <shevy> haha dustpan

03:08 <dustpan> oops

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03:15 <centrx> slay shevy

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03:16 <shevy> lol

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03:22 <donnior> close

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05:23 <eam> e

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05:26 <DeathCode> so guys

05:26 <DeathCode> i took your advice and went on to learn ruby on rails on this text editor thing called git bash

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05:26 <DeathCode> good idea or no?

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05:28 <DeathCode> sevenseacat:

05:28 <sevenseacat> i dont know what that is.

05:28 <DeathCode> damn i just cant get this right can i

05:28 <sevenseacat> but it doesnt look like a test editor

05:28 <sevenseacat> text

05:29 <DeathCode> http://installrails.com/steps/railsinstaller_windows

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05:29 <DeathCode> i got it from this website

05:29 <sevenseacat> its not a text editor, its a terminal

05:29 <DeathCode> http://installrails.com/steps/find_git_bash

05:29 <DeathCode> ahh ok

05:29 <DeathCode> so is this a good idea

05:29 <DeathCode> ?

05:29 <sevenseacat> i dont know why you need it

05:29 <DeathCode> i just dont know how to set it up for sublime text 2

05:29 <DeathCode> i just want to learn Ruby on rails

05:30 <DeathCode> why is this so hard to set up on the computer

05:30 <sevenseacat> because you're ignoring all the advice that people give you

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05:30 <DeathCode> sigh

05:30 <DeathCode> i tried the sublime thing

05:30 <sevenseacat> a terminal has nothing to do with sublime text 2

05:30 <DeathCode> couldnt figure it out

05:30 <DeathCode> NO i tried sublime as well

05:31 <DeathCode> it didnt work

05:31 <DeathCode> so i switch to the terminal

05:31 <sevenseacat> what to not figure out? :/

05:31 <sevenseacat> you type stuff in files, and save them.

05:31 <DeathCode> ye how do i test my ruby application?

05:31 <DeathCode> and my rails web server?

05:31 <sevenseacat> if its a cli app, then you run it from the cli

05:31 <sevenseacat> if its a rails app, you start a rails server then open a browser

05:31 <sevenseacat> !gettingstarted

05:31 <helpa> http://guides.rubyonrails.org/getting_started.html - Getting started with Ruby on Rails guide written by Mike Gunderloy and Ryan Bigg

05:32 <sevenseacat> you're thinking theres this one-step magical tool that will be 'set up rails'. there isnt.

05:32 <sevenseacat> you have to learn how it all works.

05:33 <DeathCode> ok quick question

05:33 <DeathCode> https://rubygems.org/pages/download

05:33 <DeathCode> first step

05:33 <sevenseacat> no.

05:33 <DeathCode> do i type that to cmd.exe ?

05:33 <sevenseacat> do you have rubygems installed?

05:33 <DeathCode> no but i have ruby installed

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05:34 <DeathCode> and with ruby i installed the rails gems

05:34 <sevenseacat> then you will have rubygems installed

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05:34 <sevenseacat> okay so you already have rails installed, good

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05:34 <sevenseacat> so generate a new rails app and start learning

05:34 <DeathCode> ok ye i went like gem install rails or some command on the cmd file

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05:34 <sevenseacat> follow the getting started guide, if you have any questions, ask in #rubyonrails because this is a general ruby room

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05:35 <DeathCode> sure can u just explain if i need to type that command in to the cmd

05:35 <DeathCode> ?

05:35 <sandelius> DeatchCode Zombies are great to learn from :) http://railsforzombies.org/

05:36 <sandelius> DeathCode

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05:37 <sevenseacat> you havent listed a command

05:37 <sandelius> DeathCode If you're using windows Railsinstaller is a good starting point: http://railsinstaller.org/en

05:37 <sevenseacat> yeah we gave him that yesterday

05:37 <sevenseacat> he ignored us

05:37 <sandelius> ok

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05:39 <DeathCode> yes yes sandelius i did that already today

05:39 <DeathCode> !

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05:40 <havenn> DeathCode: How's git bash working as your text editor so far?

05:40 <DeathCode> and i got the git bash thing to work

05:40 <DeathCode> idk i was asking if its a valid thing to do to learn ruby on rails

05:40 <sevenseacat> its 100% unrelated

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05:41 <havenn> DeathCode: Oh yes. You should try Bash on Balls, then you don't have to leave your git bash editor: https://github.com/jneen/balls

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05:41 <sevenseacat> :/

05:41 <DeathCode> ye i'll try sevenseacat link first

05:41 <DeathCode> then report back

05:42 <sandelius> I work as a CTO at a company and yesterday was the first time a got a "Rails don't scale", "We should use node" statement thrown at me :) I said: "Ohh my young padawan" :)

05:42 <Radar> Node doesn't scale either.

05:43 <sandelius> nothing scales automatically

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05:45 <Radar> Go does.

05:45 <Radar> #truefacts

05:45 <sevenseacat> oh he went there

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05:46 <sandelius> Radar I've only tried a Go a few times but I always feel when looking at OS projects that the project get messy with ton of files in the root. Perhaps there is a better way?

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05:47 <Radar> sandelius: create less files

05:47 <sevenseacat> lol

05:47 <sandelius> Radar so that's the solutions? :)

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05:47 <sandelius> -s

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05:50 <apeiros> moin

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05:54 <DeathCode> sandelius brag more haha

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05:55 <Radar> sandelius: Do you have any examples of those projects btw?

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05:59 <DeathCode> sevenseacat:so should i just learn ruby from cmd.exe then?

05:59 <DeathCode> cause thats what the getting started guide is making me do :P

05:59 <sevenseacat> you will need to be familiar with your terminal to work with ruby.

06:00 <sevenseacat> the default terminal in windows is cmd.exe.

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06:00 <DeathCode> sevenseacat:whats the step after i get familiar? what software do i use then? an IDE?

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06:00 <sevenseacat> your text editor.

06:00 <Nilium> vim.

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06:01 <DeathCode> which is sublime

06:01 <sevenseacat> yep.

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06:01 <DeathCode> so sublime is basically an editor like notepad?

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06:01 <sevenseacat> its a text editor, yes.

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06:02 <DeathCode> sevenseacat:so um, this might be a weird question. but how do i test my rails application? like, the webpage/server that i created?

06:02 <Radar> DeathCode: Focus on learning Ruby first.

06:02 <DeathCode> i'm kind of trying to get familiar with the environment here

06:02 <Radar> DeathCode: Take a week or two to learn JUST Ruby.

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06:02 <DeathCode> can i use netbeans to just learn ruby?

06:02 <Radar> Then when you're feeling more confident about Ruby + your tools then move onto Rails.

06:02 <sevenseacat> you open your browser and visit the URL.

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06:03 <Radar> DeathCode: Use Sublime to edit Ruby files.

06:03 <Radar> Netbeans is bloaty and very confusing imop

06:03 <DeathCode> ah ok sevenseacat thank u so much

06:03 <DeathCode> radar ah ok

06:03 <DeathCode> so the .rb files i open with sublime and edit that stuff up. but is there a run feature in sublime?

06:03 <Radar> There is not a run feature. Run it in your cmd.exe.

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06:04 <DeathCode> so drag the file to the cmd

06:04 <DeathCode> and it will run

06:04 <sevenseacat> >_<

06:04 <sevenseacat> no

06:04 <DeathCode> there was a way this friend of mine did it xD

06:04 <DeathCode> oh sorry it was komodo edit

06:04 <DeathCode> never mind

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06:04 <DeathCode> thank u so much guys. i think my computer is set up

06:05 <DeathCode> i'll learn ruby for one whole week

06:05 <sevenseacat> hooray

06:05 <DeathCode> then come back for rails

06:05 <sevenseacat> gl

06:05 <DeathCode> ty

06:05 <DeathCode> :)

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06:05 <sevenseacat> he gives me a headache

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06:06 <Radar> +`1

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06:49 <flughafen> sevenseacat: i give you a headache?

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06:50 <sevenseacat> nah youre cool :)

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06:50 <flughafen> ooh la la! you heard it here, sevenseacat said i was cool!

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06:50 <flughafen> sevenseacat: can you print out some kind of certificate of coolness and mail it to me?

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06:51 <sevenseacat> lol

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06:51 <flughafen> how goes it sevenseacat

06:51 <flughafen> sup certainty shevy arup_r

06:52 <sevenseacat> not bad.... settling into a new job

06:52 <flughafen> sevenseacat: did you start at a new company

06:52 <sevenseacat> yep

06:53 <arup_r> sevenseacat: new Rails job? some other tech ?

06:53 <sevenseacat> rails :)

06:53 <sevenseacat> stick to what im good at

06:53 <arup_r> cool

06:53 <arup_r> sevenseacat: you have dozens of Rails app experience.. so you can work anywhere... I know :)

06:54 <flughafen> arup_r: sevenseacat is web scale

06:54 <arup_r> flughafen: hum.. good very good

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06:55 <arup_r> I don't know when I'll complete dozens of app..

06:55 <arup_r> still.. 2

06:55 <flughafen> coly cow it's windy today

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07:00 <flughafen> i was surprised when i walked around a building and was almost blown away by the wind. i was looking down at my mp3 player and didn't hear anything.

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07:02 <certainty> flughafen: windy? that's only a slight breeze

07:03 <hanmac> you think you have problems with the weather? currently its snowing outside, i think it would make more sense to leave the eggs white this year ;P

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07:03 <certainty> :)

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07:04 <certainty> as we say here: "Es ist erst windig, wenn die Schafe keine Locken mehr haben."

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07:05 <flughafen> hanmac: where are you?

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07:05 <flughafen> haha.

07:06 <flughafen> certainty: ^^

07:06 <certainty> xD

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07:06 <hanmac> certainty: i do live under the roof of our house and the roof itself is not isolated, so the wind can pass through if it wants ... and each time its very stormy outside i need to remember me that i am not in Kansas ;P

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07:07 <certainty> hanmac: hehe, stay calm dorothy

07:08 <hanmac> yeah i will do Toto ;P

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07:08 <certainty> man that was a movie

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07:09 <hanmac> plural, there are many more of it with that plot/context ... imo one of my favorits was "Tinman" which is a bit more steampunk like ;P

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07:10 <certainty> i didn't know there were more

07:10 <certainty> #ruby is such a knowledgable place

07:10 <certainty> :p

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07:17 <certainty> alright let's bootup emacs

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07:19 * flughafen sighs

07:19 <flughafen> emacs? could you for once, not talk about emacs certainty

07:19 <certainty> flughafen: nope, i'm in love

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07:20 <flughafen> i love vim everybody ;)

07:20 <certainty> see

07:20 <certainty> how does it feel?

07:20 <flughafen> GREAT!

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07:21 <flughafen> wie ein schaf ohne locken

07:21 <certainty> xD

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07:22 <hanmac> certainty: " The systemd Project Forks the Linux Kernel" => http://distrowatch.com/weekly.php?issue=20150330#community ;P

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07:23 <SebastianThorn> http://www.phoronix.com/scan.php?page=news_item&px=Systemd-No-Linux-Fork

07:23 <avril14th> morning

07:23 <SebastianThorn> certainty: i love emacs aswell :)

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07:23 <flughafen> they're turnign against me!

07:24 <certainty> SebastianThorn: hah, ^5

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07:24 <certainty> even if they didn't until now, the intentions seem to be clear

07:24 <certainty> (fork)

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07:25 <SebastianThorn> i dont get it, arent they allowed to fork if they wanted to?

07:25 <certainty> they are

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07:26 <certainty> it's not so much about the fork itself, it's about wanting to take care of everything

07:26 <certainty> that's been a tendency in the development

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07:27 <SebastianThorn> certainty: in systemd's development?

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07:27 <certainty> SebastianThorn: yeah. I should've made that clearer, yepp, sorry.

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07:37 <certainty> http://fsharpforfunandprofit.com/posts/monoids-without-tears/ nice introduction to monoids. apeiros you asked some time back.

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07:45 <sandelius> web UI is soo hard...

07:45 <sandelius> Good web UI that is

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07:51 <DeathCode> ruby keeps me up at night

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07:58 <certainty> DeathCode: why is that?

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07:59 <DeathCode> i keep coding

07:59 <certainty> good

07:59 <DeathCode> dont even sleep

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07:59 <DeathCode> gotta learn this shit

07:59 <DeathCode> gonna put food on my plate one day

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07:59 <certainty> DeathCode: well you should sleep

07:59 nii236 has joined #ruby

07:59 <certainty> it doesn't make sense not to

08:00 <DeathCode> no i cant waste time

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08:01 <sandelius> your memory and learning ability get waaay better with sleep

08:01 <certainty> DeathCode: you're wasting time if you don't sleep

08:01 <DeathCode> besides night time, i dont get much time to learn to code

08:01 <DeathCode> because in the day time i'm busy

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08:02 <sandelius> prioritise?

08:02 <DeathCode> i learned java this way. and building apps

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08:03 <certainty> well everyone is different. I can only speak for myself. I'd consider sleep a bit more so that i can actually learn instead of just getting more and more exhausted

08:03 <sevenseacat> :/

08:03 <certainty> that's the road to burnout and stuff

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08:04 <certainty> sevenseacat: morning, mam. How's it downunder today?

08:04 <sevenseacat> warm

08:05 <sandelius> DeathCode why is it so important that you must learn Ruby in just a week?

08:05 * certainty is jealous

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08:05 <certainty> DeathCode: here's a fact for you. Turns out it takes roughly 10 years to get in expert in one field

08:05 <DeathCode> because life is short. time passes by. i have to make money and start building web pages as soon as i can

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08:06 <certainty> s/get in/become an/

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08:06 <sandelius> DeathCode But you already know Java?

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08:06 <DeathCode> yeah i do. but i want to learn a few more languages as well. this way i have better chance of getting a job

08:07 <DeathCode> trying to learn ruby on rails and mysql

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08:07 <DeathCode> then i want to apply it all on making apps or get a job with these skills

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08:08 <sandelius> DeathCode Well put food on the table with your Java skills and learn Ruby during?

08:08 <DeathCode> because i want more money than a minimum wage job. and i dont have a degree

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08:09 <DeathCode> i feel like i have a talent in this. may not seem like this because i dont know how to get ruby set up. but i learned java really fast and i'm good at that

08:09 <sevenseacat> youve got a long road ahead if you want to use ruby to pay the bills

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08:10 <sevenseacat> and you wont be using windows for it

08:10 <DeathCode> ye

08:10 <DeathCode> but i have java as well in the background

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08:11 <sandelius> DeathCode Still I agree with sevenseacat, install Ubuntu, or by a Mac. That will make your Ruby life a whole lot simpler

08:11 ascarter_ has joined #ruby

08:11 <sevenseacat> but for now, windows is fine.

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08:11 <DeathCode> i dont have the money to do that. or the time to get familiar with another os

08:11 <flughafen> just go the linux route

08:11 <sevenseacat> dont heap too much on the guy at once. he's a java dev. he wants point and click.

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08:11 <DeathCode> lel dont talk shit pls

08:12 <flughafen> sevenseacat: he has to create a point factory and make an abstract factory factory for clicking

08:12 <certainty> lel?

08:12 <certainty> gotcha

08:12 <sevenseacat> DeathCode: i'll talk whatever i want tbh

08:12 <certainty> lelele xD

08:12 <DeathCode> lele pons

08:12 <DeathCode> wait shit

08:12 <DeathCode> java is not easy for certain people either

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08:12 <DeathCode> so when u talk like that it seems like its super easy but people can find it hard

08:13 <certainty> that's right. java is hard to bear for me

08:13 <sevenseacat> i never said it was easy, its just totally different to anything decent.

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08:13 <DeathCode> damn...this like console wars?

08:13 <certainty> i like the fact that the cat manages to downgrade java in the tail of a sentence that started with something totally neutral

08:13 <sevenseacat> certainty: ;)

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08:14 <certainty> :D

08:14 <flughafen> :DDDDDDD

08:14 <DeathCode> crips and the bloods. coke and pepsi. xbox and ps. mac and pc

08:14 <DeathCode> =DDDDDDDD

08:14 <Guest74> hi

08:14 <sevenseacat> sigh

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08:14 <DeathCode> sup Guest42382

08:15 <Guest74> can anyone tell me how to install Nginx with Passenger

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08:16 <sandelius> Guest74 passenger ships with an nginx installer

08:16 <Guest74> yep

08:16 <sandelius> Guest74 when you install passenger you even get to choose to install it :)

08:17 <Guest74> i just want to depoy my rails app to EC2 s3 Amazon

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08:17 <DeathCode> do u guys like mech pencils or wooden pencils?

08:18 <ponga> DeathCode: latter, for feeling

08:18 <DeathCode> mech pencils does it for me

08:18 <DeathCode> haha

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08:19 <ponga> but its been so many yrs since i used pencil

08:19 <DeathCode> u use pen?

08:19 <DeathCode> i write everything with pencils

08:19 <ponga> mostly pen, at seldom occasions tho

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08:19 <ponga> i use my phone and laptop

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08:19 <DeathCode> ah ok

08:19 <DeathCode> what do u do ponga

08:19 <ponga> you asking job?

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08:20 <DeathCode> yeah

08:20 <ponga> never though one's job is something you can ask like how much is this cheeseburger

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08:20 <ponga> im stunned

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08:21 <DeathCode> i dont know what u mean

08:21 <DeathCode> i cant ask someone's job like "how much is this cheeseburger?"

08:21 <DeathCode> ?

08:21 <DeathCode> but people do though. they ask "what do you do for a living?" all the time

08:22 <tobiasvl> what on earth are you guys talking about

08:22 <ponga> do you live in states?

08:22 <DeathCode> i live in Canada

08:22 <sevenseacat> just DeathCode being his usual charming self.

08:22 <ponga> perhaps its the culture there

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08:22 <DeathCode> sevenseacat:you know it ;

08:22 <DeathCode> ;)

08:22 <DeathCode> ponga what about the culture here?

08:22 <tobiasvl> but

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08:22 <ponga> his charm is too strong for me

08:22 <tobiasvl> I don't understand ponga's cheeseburger analogy

08:23 <flughafen> MONGOPONGA

08:23 <ponga> tobiasvl: me neither, its ok

08:23 <DeathCode> ye i thought he meant to say you can't ask what someone does for a living like asking "how much for a cheeseburger?" tobiasvl

08:23 <DeathCode> like you gotta warm them up first :P

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08:23 <tobiasvl> do you mean that you didn't know that "what do you do" is shorthand for "what do you do for a living", like "how much" is shorthand for "how much is this"?

08:24 <tobiasvl> or that it's rude to ask what someone's job is?

08:24 <tobiasvl> or what

08:24 <ponga> DeathCode: i didn't intend 'warm them up first' but it sounds reasonable so i will take that

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08:24 <ponga> thank you

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08:24 <tobiasvl> haha

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08:24 <DeathCode> you're on the next level tobiasvl

08:24 <DeathCode> you're overthunk it

08:24 <tobiasvl> maybe

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08:27 <flughafen> DeathCode: are you a java developer now?

08:28 <DeathCode> no?

08:28 <sevenseacat> wat

08:28 <DeathCode> i'm not a professional java dev

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08:28 <DeathCode> but i'm proficient with it yes

08:29 <ponga> DeathCode: is that where your nick came from

08:29 <DeathCode> hahaha thats funny

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08:29 <flughafen> how long have you been writing in java?

08:30 <DeathCode> long time. on and off really

08:30 <DeathCode> ever since i was 14

08:30 <certainty> you have my sympathy

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08:31 <DeathCode> you had my curiosity

08:31 marr has quit [Remote host closed the connection]

08:31 <DeathCode> but now you have my attention

08:32 <flughafen> why don't you get a job as a java dev

08:32 quimrstorres has joined #ruby

08:32 <certainty> because he wants to be happy

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08:33 <DeathCode> i would. but this economy is rough

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08:33 <DeathCode> also i havent applied yet hehe

08:34 <flughafen> not for engineers

08:34 <DeathCode> mainly cuase most places that are hiring look for a range of languages

08:34 <DeathCode> not just java :(

08:34 * sevenseacat is wisely biting tongue

08:34 <DeathCode> say it sevenseacat

08:34 <sevenseacat> see, i know when to shut up.

08:35 <DeathCode> nah u still mentioned it

08:35 <DeathCode> so say it

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08:37 <DeathCode> sevenseacat:

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08:40 <DeathCode> ye fuck u for thinking shit behind my back

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08:42 <sevenseacat> say that again?

08:44 <flughafen> haha

08:44 <sandelius> sevenseacat Gooday officer

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08:45 <sevenseacat> DeathCode: don't be rude.

08:45 <DeathCode> nah didnt mean it

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08:46 <sevenseacat> wise decision.

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08:46 <sandelius> DeathCode Don't take the Java crap personal. We all hate it

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08:46 <DeathCode> damn yall are some condescending motherfuckers

08:46 <apeiros> DeathCode: behave

08:46 <DeathCode> reminds me of them hot girls at the club the other night

08:46 <DeathCode> ok sorry

08:47 <apeiros> people are having an enormous amount of patience with you IMO

08:47 DeathCode was kicked from #ruby by sevenseacat [DeathCode]

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08:47 <certainty> who would've seen that coming?

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08:47 <DeathCode> ye sorry about that

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08:47 <sevenseacat> DeathCode: don't be rude.

08:47 <DeathCode> was joking. didnt mean to be mean

08:47 <apeiros> thank you sevenseacat

08:47 <DeathCode> or be obscene

08:47 <DeathCode> or make a great big scene

08:47 <apeiros> DeathCode: never say you were joking about being rude.

08:47 <DeathCode> never say neverrrr

08:47 <apeiros> it doesn't make it any better, only worse.

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08:48 <apeiros> at least with me and most people I know.

08:48 <DeathCode> i understand

08:48 <DeathCode> sorry for being so out of line

08:48 <DeathCode> and i truly, humbly apologize for any pain that i may or may not have caused

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08:49 <DeathCode> what was that one guy saying, that yall hate java?

08:50 <DeathCode> what caused this great divide?

08:50 <apeiros> one person doesn't speak for everybody

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08:50 <DeathCode> apeiros:how old are you?

08:50 <apeiros> I for one don't hate java. but that doesn't mean I want to code in it.

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08:51 <flughafen> apeiros: i use java and i hate it ;)

08:51 <apeiros> flughafen: if I were forced to use it, maybe I'd hate it too :)

08:51 <DeathCode> flughafen:are u java developer?

08:52 <flughafen> i write in a few languages, java is one of tghem

08:52 <DeathCode> JavaIsAwesome()

08:52 <SebastianThorn> you forgot ;

08:52 <SebastianThorn> i think

08:52 <canton7> wrong casing, too

08:52 <apeiros> btw. DeathCode, while I don't speak for others, I find your permanent being off-topic annoying. just saying.

08:53 * apeiros current status - parsed logs from 2011-2015 with less than 30 failed lines :D

08:53 <apeiros> (#ruby logs)

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08:54 <DeathCode> am i always off-topic?

08:54 <DeathCode> i do ask for ruby related stuff?

08:54 <DeathCode> like how to set up ruby or rails

08:54 <apeiros> not always but permanently.

08:54 <DeathCode> ok?

08:54 <DeathCode> lol

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09:24 <flughafen> certainty: es ist wie er hat gefurzt und alles ist weg gegangen

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10:03 <arup_r> flughafen: why are all silent ?

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10:05 <jhass> yeah, let's play some hangman

10:05 <jhass> DeBot: !hangman gems

10:05 <DeBot> ␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣ [] 0/12

10:05 <jhass> DeBot: _-

10:05 <DeBot> ␣␣␣␣␣_␣␣␣␣␣␣␣␣␣ [-] 1/12

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10:05 <arup_r> hehehe

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10:06 <arup_r> DeBot: \/

10:06 <DeBot> ␣␣␣␣␣_␣␣␣␣␣␣␣␣␣ [-\/] 3/12

10:06 <arup_r> wowow

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10:06 <m3nTe> hi guys

10:06 <jhass> hi

10:06 <arup_r> hello

10:06 <m3nTe> someone of you have ever stubbed request with a proxy? using webmock

10:07 <m3nTe> https://github.com/bblimke/webmock

10:07 <m3nTe> I can't find nothing about it

10:07 <jhass> no, but some of us are pretty good with reading docs and code

10:07 <jhass> what did you try so far?

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10:07 <jhass> webmock tends to be quite informative about what to do if you just don't do anything besides activating it

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10:08 <m3nTe> jhass: uhm, I had a look to the source code, but I didn't find any options to pass to the `stub_request` as a proxy param

10:08 <m3nTe> it accept only a `method` and a `url`

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10:08 <flughafen> arup_r: translate what i said in german, hahah

10:08 <flughafen> and see the log, unless you just got in

10:09 * flughafen needs to go

10:09 <jhass> m3nTe: but did you try to let it fail?

10:09 <jhass> what does it say then?

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10:09 <m3nTe> jhass:

10:09 <m3nTe> Excon::Errors::ProxyParseError:

10:09 <m3nTe> Proxy is invalid

10:09 <arup_r> flughafen: lunch walk ?

10:09 <m3nTe> because from excon I'm using a proxy, but the stubbed request doesn't recognize it and is doing the call outside from the specs

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10:10 <arup_r> Umm that lunch walk seems certainty: do

10:10 <jhass> I'm not sure that error sounds like that

10:10 <jhass> can you maybe make something self contained that reproduces?

10:10 iterator_ has joined #ruby

10:10 <jhass> like a gist with all code in a file?

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10:10 <jhass> that one could run through rspec?

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10:12 <m3nTe> jhass: sorry, I'm pretty sure the problem is that

10:12 <m3nTe> is just I don't know how to set a proxy

10:12 <m3nTe> in a stubbed request

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10:14 <jhass> if you want somebody to look at this, give us something to tinker with ;)

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10:15 <jhass> https://github.com/excon/excon#stubs there's native stubbing support btw

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10:21 <sandelius> Have anyone of you tried crystal-lang ?

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10:21 <ponga> me!

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10:21 * jhass raises hand

10:21 <sandelius> What's the status, is it gaining any traction?

10:22 <jhass> sandelius: DeBot here is written in Crystal :P

10:22 <sandelius> jhass ahh is it available on Github?

10:22 <jhass> yeah

10:22 <jhass> jhass/DeBot (who would've guessed :P)

10:23 <jhass> I always have trouble with such questions, how do you measure traction?

10:23 <ponga> >> puts "hi"

10:23 <eval-in_> ponga => hi ... (https://eval.in/306849)

10:23 <jhass> the community is certainly growing

10:23 <sandelius> jhass hmm well is the number of people using it increasing?

10:24 <jhass> yes, though I think the people actually tinkering with it is still well below 100

10:24 <ponga> jhass: i was once asked what makes crystal so attractive , i answered that its a ruby sister who is sexier and younger

10:24 <jhass> but some of those, especially the core devs are highly active

10:24 <ponga> that's how i descrbied to shevy

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10:25 <jhass> note that there are still design changes in the language, it's not completely stable yet

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10:25 <jhass> it's the phase where stdlib and the library eco system need to build up while the language is adjusted to support these efforts

10:26 <sandelius> jhass well it looks exactly like Ruby :)

10:26 <jhass> at first, yes ;)

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10:26 <jhass> but you'll notice soon enough it's different once you try to write Ruby in it ;)

10:26 <sandelius> jhass is a program compiled into an executable ?

10:26 <jhass> yes

10:28 <sandelius> this is awesome :D

10:28 <sandelius> how did I miss this

10:28 <jhass> :D

10:28 <ponga> sandelius: i tested my array code and crystal was at least 5 times faster!

10:28 <ponga> and i got exec file

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10:28 <jhass> did you compile with --release? :P

10:29 <ahmetkapikiran> https://github.com/ahmetkapikiran/crystalweb

10:29 <sandelius> ponga so there there really is something like free speed :)

10:29 <ahmetkapikiran> basic dsl :)

10:29 <ponga> sandelius: yeah i just used my old ruby code, changed like two words in them

10:30 <sandelius> is has a built in web server "HTTP::Server" just like node?

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10:31 <jhass> sandelius: pretty much, here is its code: https://github.com/manastech/crystal/blob/master/src/http/server/server.cr

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10:32 <sandelius> jhass what's this: @get = {} of String => ( -> String)

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10:32 <jhass> a hash whose keys are strings and values are procs that take no argument and return a String

10:33 <sandelius> jhass now I see it.

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10:34 <jhass> with an empty hash literal Crystal can't infer the type

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10:34 <jhass> for things like {"foo" => "bar"} you don't need to specify the type

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10:34 <sandelius> jhass so it's only when you don't know the hash values?

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10:36 <jhass> if you don't have initial values crystal can deduce the types from

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10:46 <sandelius> jhass This looks really really interesting!

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10:46 <jhass> yup

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10:51 <arup_r> ponga: hi

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10:51 <ponga> hi arup

10:51 <arup_r> how r u ?

10:51 <ponga> arup_r: shevy made a screenshot of me being silly http://i.imgur.com/XnUlaQE.png

10:52 <ponga> gud

10:52 <arup_r> hehehe

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11:15 <shevy> ah it's the change of colours

11:15 <shevy> now ponga appears normal again :)

11:15 <shevy> xchat seems to have a rather limited set of default colours it uses

11:15 <shevy> arup_r appears red

11:16 <arup_r> hummm.. why I was red.. dunno

11:16 <shevy> the colour of love

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11:17 <jhass> rage you mean

11:17 <arup_r> shevy: we lost the world cup :(

11:19 <shevy> arup_r cricket?

11:19 <BLuEGoD> how can I add/substract months in Ruby preserving the end of month i.e: Date.new(2013,6,30)-3.months = 30 Mar 2013 - and not 31st. I want to get last day of june - 3 months = last day of march.. ?

11:19 <arup_r> humm

11:19 <shevy> arup_r you guys need some more violent game, like rugby

11:19 <arup_r> hahah.. why ???

11:19 <shevy> cricket seems so harmless

11:19 <shevy> also I don't even know the rules

11:19 <shevy> nor of rugby, actually :)

11:20 <apeiros> BLuEGoD: construct the new date

11:20 <workmad3> BLuEGoD: (Date.new(...) - 3.months).end_of_month

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11:21 <apeiros> workmad3: is that guaranteed to never "flow" over so it ends up 1 month off?

11:22 <BLuEGoD> ok thanks apeiros, thought there would be some method for that

11:22 <arup_r> shevy: I'll tell our prime minister about it..

11:22 <shevy> arup_r hehehe

11:22 <BLuEGoD> /workmad3

11:22 <arup_r> we need some grounds to practice rugby

11:22 <apeiros> actually looks like it does that proper

11:22 <apeiros> BLuEGoD: what workmad3 said

11:22 <workmad3> apeiros: I *think* so, but I'd need to play... some_date - 3.months will always end up 3 months ago, and I'm pretty sure that .end_of_month when on the end of the month doesn't flow over to the next month

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11:24 <apeiros> workmad3: I was more worried about effects like 2015-01-31 + 1.months => 2015-03-02

11:24 <flughafen> arup_r: yeah, the dog is young so i need to go home and walk him

11:24 <apeiros> but iirc AS actually stores the whole addition/subtraction series, which results in some other weird effects

11:24 <apeiros> but adding/subtracting months is a bad idea to begin with

11:25 <workmad3> apeiros: there could be some complication if they were Times with timezones, as it would depend on what timezone you transitioned to in order to do the .end_of_month call (i.e. if you did the end of the month at 11:59pm in UTC, then travelled back 2 months to the 30th April, said you wanted the date in BST so it's +1 and did .end_of_month, then you'd end up at the end of may, if I'm working things out corre

11:25 <workmad3> ctly)

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11:25 <kstuart> BLuEGoD: why not just subtract months

11:25 <kstuart> >> Date.new(2013,6-3,-1)

11:25 <eval-in_> kstuart => uninitialized constant Date (NameError) ... (https://eval.in/306871)

11:25 <workmad3> apeiros: ah, yeah... the AS extensions for dates take account of that, they'll move back a day like that :)

11:25 <kstuart> >> require 'date';Date.new(2013,6-3,-1)

11:25 <eval-in_> kstuart => #<Date: 2013-03-31 ((2456383j,0s,0n),+0s,2299161j)> (https://eval.in/306872)

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11:26 <kstuart> >> require 'date';Date.new(2013,6-8,-1)

11:26 <eval-in_> kstuart => #<Date: 2013-11-30 ((2456627j,0s,0n),+0s,2299161j)> (https://eval.in/306873)

11:26 <arup_r> flughafen: have you ever tried Component-based Architectures in Ruby and Rails ?

11:26 <workmad3> kstuart: that one didn't work quite so well, eh? :P

11:26 <kstuart> how so?

11:26 <arup_r> Although I don't know what does it means?

11:26 <workmad3> kstuart: it's still in 2013

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11:26 <flughafen> arup_r: no

11:27 <apeiros> seems they no longer keep track of the operation chain, though. at least I remembered this having a different result: Date.civil(2015,1,31) + 1.month - 1.month # => 2015-01-28

11:27 <kstuart> Ah! missed that!!

11:27 <BLuEGoD> true..

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11:27 <arup_r> flughafen: service object in Rails ?

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11:27 <flughafen> no

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11:28 <workmad3> kstuart: dates are a PITA :)

11:28 <workmad3> kstuart: there's always some extra edge-case just waiting to trip you up :(

11:28 <canton7> just wait until you start adding timezones

11:28 <kstuart> yup, in any language ;)

11:29 <arup_r> flughafen: thanks for supporting me..

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11:29 <arup_r> flughafen: you use vanilla Rails MVC.. right ?

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11:30 <flughafen> arup_r: no. i have a few commits to a rails project, buit i'm not a rails guy

11:30 <arup_r> wow

11:31 <arup_r> flughafen: you use Python and Django for web dev projects ?

11:31 <arup_r> or .Net. C# ?

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11:32 <workmad3> kstuart: if you want something really fun, what do you think should be the day after '1750-03-24' using civil dates in england? or the day after '1752-09-02'? :)

11:32 <workmad3> (again in england)

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11:33 <flughafen> arup_r: java, python for web

11:33 * canton7 thinks he knows both of those

11:33 <arup_r> flughafen: humm... you guys are rock!

11:33 <flughafen> ruby for test stuff. we use cucumber/capybara

11:33 * arup_r a skills auck

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11:33 * arup_r s skills auck

11:34 <flughafen> it's ok, practice!

11:34 <arup_r> :(

11:34 <kstuart> workmad3: those dates didn't exist in england ;)

11:34 <canton7> the first is the "year changes in march" gotcha, the second is the shift to the gregorian calendar, I think?

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11:35 <workmad3> kstuart: yeah they do

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11:36 <workmad3> kstuart: but the day after 1750-03-24 is 1751-03-25, and the day after 1752-09-02 is 1752-09-14

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11:36 <canton7> yay!

11:36 <kstuart> workmad3: aren't those dates related to julian -> gregorian switch?

11:36 <canton7> the second one is

11:36 <canton7> the first is a quirk in the julian calendar itself

11:36 <kstuart> Ah, ok, thanks!

11:36 <workmad3> kstuart: the second one is the day before the julian-gregorian switch, the first is a quirk in the 'legal start of the year' or 'civil dates' in england

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11:37 <canton7> how about the day after 29-12-2011 in Samoa?

11:38 <workmad3> canton7: that was the 31-12-2011, right?

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11:38 <canton7> yep :D

11:38 <workmad3> canton7: where they decided to go from -12 to +12?

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11:38 <kstuart> No wonder date libraries are hard

11:38 <canton7> they're +13 now I think

11:38 <workmad3> kstuart: hard to impossible

11:39 <workmad3> kstuart: i.e. don't ask what the 'time' is in the gaza strip

11:39 <workmad3> kstuart: as it'll depend on who you ask

11:39 <apeiros> date libraries aren't hard. calendar libraries are :-p

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11:39 <apeiros> for a date library, you can just pretend infinitely backdated gregorian

11:39 <canton7> wasn't it Sweden that had something like 3 botched attempts to shift to the gregorian calendar?

11:39 <apeiros> at least that's what I did

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11:40 <workmad3> apeiros: what annoys me a bit is that the ISO standard for datetimes doesn't actually contain enough info to do sensible calculations :(

11:40 <apeiros> workmad3: hm, interesting. I never even considered ISO beyond representation.

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11:41 <kstuart> workmad3: How so, surely it's one timezone in the gaza strip?

11:41 <apeiros> anyway, my solution to calendar quirks was/is that you could overlay any calendar class you'd want

11:41 <workmad3> kstuart: depends on which side of the conflict the person you ask is affiliated to

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11:41 <canton7> kstuart, depends on who you ask

11:41 <apeiros> that's also how it could theoretically support things like chinese calendar, or discordian, or julian, or whatever.

11:42 <canton7> since we're all just basically quoting this video: https://www.youtube.com/watch?v=-5wpm-gesOY

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11:42 <kstuart> but if TZ if physical location how could it change (unless some sort of daylight savings agreed by one side, not the other perhaps?)

11:42 <workmad3> kstuart: TZ isn't physical location

11:43 <workmad3> kstuart: that would be *sensible*

11:43 <canton7> daylight savings disproves that trivially :P

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11:43 <workmad3> canton7: or even take account of places in spain that are on the same latitude ranges as england, yet have +1/+2 rather than +0/+1 :)

11:43 <canton7> look at the map of timezones - the timezone of a place bears only a passing resemblance to where it is on the map

11:44 <canton7> http://en.wikipedia.org/wiki/List_of_UTC_time_offsets#/media/File:World_Time_Zones_Map.png

11:44 <canton7> it's more political than anything else

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11:44 <kstuart> canton7: Thanks for video link, looks good, I'm a little confused now so will go watch...

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11:45 <workmad3> apeiros: regarding ISO representation... the *second* after '1752-09-02T23:59:59+0000' will change depending on the location, which isn't part of the representation :(

11:45 <canton7> also amuses me that australia has +8.75 and +9.5 timezones, india is +5.5, and nepal is +5.75. Had to argue that case against a client who wanted timezones in increments of 1hr

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11:46 <workmad3> apeiros: which is also true for countries that end up sharing timezones over differing DST rules

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11:49 <workmad3> canton7: I think barbados had something like a -8:51 TZ for quite some time :)

11:49 <canton7> oh lovely!

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11:49 <canton7> "we want to be different, screw you"

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11:59 <kstuart> canton7: wow, educational

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11:59 <kstuart> Madness, thank god for experts that don't mind losing their sanity to putting all that into a library

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12:00 <canton7> it gets worse in practice, sometimes

12:00 <canton7> fun stuff like your langauge only having a 'datetime' type, which you have to co-opt to use to display dates. then accidentally having a timezone applied to it when formatting

12:00 <canton7> that doesn't go well

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12:02 <canton7> or trying to explain to a client why you can't localize dates, only datetimes

12:03 <apeiros> oracle doesn't have a true date type. always fun.

12:03 <apeiros> caused a couple of off-by-one errors for us

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12:05 <_1_manu3> hello

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12:14 <Timgauthier> it is all shevy's fault

12:14 <Timgauthier> he's a walking segfualt

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12:15 <shevy> yeah

12:15 <shevy> I am a segfualt

12:15 <Timgauthier> sup man? long time no irc

12:15 <shevy> :)

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12:15 <shevy> yeah that is understandable

12:15 <Timgauthier> i really don't understand what a segfualt is lol

12:16 <shevy> you are married now and have no more time for the old days

12:16 <Timgauthier> i wish

12:16 <shevy> hehe

12:16 <Timgauthier> its actually that i'm stuck in german class all morning and not doing any work so my mac gets rarely turned on

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12:16 <shevy> I see! so you'll write poems like Goethe eventually

12:17 <Timgauthier> haha

12:17 AlphaTech is now known as AlphaTech|AWAY

12:17 <Timgauthier> ich nich screiben

12:17 <shevy> back in schooldays, we had to read a lot of boring german literature

12:17 <Timgauthier> schreiben*

12:17 <Timgauthier> ja, aber ich nicht in der grundeschüle.

12:18 <Timgauthier> Diese ist für Auslander zu gelernt Deutsch

12:18 AlphaTech|AWAY is now known as AlphaTech

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12:18 <shevy> hehe

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12:18 <Timgauthier> that was all shit german, i apologize :P

12:19 <shevy> the weird part about that literature was that the wording and style was so alien and outdated

12:19 <shevy> there literally were sentences that spanned over more than a full page

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12:19 <Timgauthier> haha nice

12:19 <Timgauthier> yeah, thats like us studying shakespear

12:19 <shevy> :)

12:19 <Timgauthier> his writing does not represent english

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12:20 <shevy> oh?

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12:20 <shevy> but it looks like english?

12:20 <Timgauthier> no, no one ever spoke or wrote like that but him

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12:20 <Timgauthier> his writing was a specific style to himself, it was lots of jokes based on pronounciation from the little part of london his theater was in

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12:24 <norc> Hi. I have a rails application. Now my Gemfile requires a gem from a local (intranet!) git server, and gems from an external (behind a proxy!) git server. Is there a way to either specify a proxy for a single gem?

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12:24 <norc> Or should I build the gem from the internal network and put it inside the other gem?

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12:25 <apeiros> norc: use no_proxy env variable

12:26 <norc> apeiros: Can I use that selectively on a gem in a gemfile?

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12:27 <apeiros> no

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12:27 <apeiros> but I doubt that your local server and the external git server have the same address

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12:27 <apeiros> so I don't see why you'd want to do that "per Gemfile"

12:27 <iasoon> Is it possible to patch class methods using refinements?

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12:27 <apeiros> iasoon: all ruby classes are open

12:27 <apeiros> (that is, unless somebody calls .freeze on it)

12:28 <iasoon> apeiros: Do you have a pointer on how to do this?

12:28 <apeiros> iasoon: note that patching existing classes which you don't control is called "monkey patching" for a reason. do it with care. better yet, don't do it at all.

12:28 <iasoon> I tried refining Classname.singleton_method, but that did not work.

12:28 <apeiros> iasoon: just plain `class ExistingClass; dowhatever; end`

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12:29 <apeiros> iasoon: oooh

12:29 <apeiros> sorry, completely misread you

12:29 <apeiros> I read "patch classes without using refinements"

12:29 <iasoon> Hehe =)

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12:29 <apeiros> I think I haven't tried refining class methods yet, sorry

12:30 <iasoon> Thanks anyways :)

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12:30 <shevy> iasoon refinements still confuse me

12:31 <shevy> the syntax feels so clunky... monkeypatching seems so much simpler!

12:31 <norc> apeiros: Ah perfect. This solution is perfect for my needs.

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12:33 <iasoon> shevy: Does it? You just do 'refine' instead of 'class', and then 'using YourModuleWithRefinements' where you want to use them?

12:33 <shevy> hmmm that's not how I remember it... let me look up

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12:35 <shevy> I can't use them in a class? http://pastie.org/10064647

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12:35 <shevy> oh that makes no sense what I wrote there, a moment

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12:36 <wasamasa> hmm

12:36 <shevy> nope, I still don't get it

12:36 <wasamasa> how would one make a gem automatically load itself?

12:37 <wasamasa> I recall some I've downloaded doing this, but I can't remember their names

12:37 <apeiros> I'd much prefer if refinements where objects instead of modules. with proper methods to combine and manipulate the refinement.

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12:37 <shevy> wasamasa do you mean upon a require-event? perhaps through autoload?

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12:37 <wasamasa> shevy: there are some that don't even need a "require 'my_gem'" to work

12:37 <shevy> ohhh... I have to add a "using" call I suppose

12:38 <shevy> but I can do so only on a module?

12:38 <shevy> wasamasa hmmmm

12:38 <shevy> sounds like a virus!

12:38 <wasamasa> sure it does

12:38 <shevy> perhaps they can dump somewhere in an autoloadable file or so

12:38 <wasamasa> I'm asking since I have one offering a refinement and doing both a require and using feels like wasted effort

12:39 <shevy> hehehe

12:39 <shevy> true

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12:40 <apeiros> iasoon: `module X; refine Klass.singleton_class do; def class_method … `

12:40 <apeiros> works for me

12:41 <wasamasa> shevy: autoload looks right

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12:42 <shevy> cool

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12:42 <shevy> I never actually used autoload... dunno why not

12:42 <shevy> and it is no longer deprecated either \o/

12:42 <iasoon> Ah, wow, I was still doing self.method instead of just method

12:42 <iasoon> thanks apeiros, I got it now

12:43 <apeiros> yw

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13:06 <Grantlyk> Hey guys

13:06 <Grantlyk> who here likes gems?

13:06 <oddmunds> everyone

13:07 <Timgauthier> i especially like sapphire

13:07 <Grantlyk> I've got a gem i'm working on due to the Github DDoS

13:07 <Grantlyk> it lets you sync your repo with bitbucket

13:07 <Grantlyk> to store it on both github and bitbucket via one command

13:07 sevvie has joined #ruby

13:07 <Grantlyk> yay or nay?

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13:07 <apeiros> um, `git push othergitrepo`?

13:08 <apeiros> +/- some flags so all branches get pushed…

13:08 <Grantlyk> Yeah, this basically simplifies that

13:08 <Grantlyk> so rather than having to run several commands

13:08 <Grantlyk> you only run one

13:08 <apeiros> ok, got to admit I'm not sure what's there to simplify :D

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13:08 <apeiros> it might even be possible to instruct git to push to multiple remotes. never checked.

13:08 <wasamasa> yes it is

13:08 <Grantlyk> You can do, I already know how to do it

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13:09 <wasamasa> I did that for some time

13:09 <Grantlyk> I also currently do that

13:09 <wasamasa> but I stopped doing that

13:09 <Grantlyk> hence why I made this

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13:09 <Grantlyk> because I got sick of treating it like two different remotes

13:09 <Grantlyk> rather than just one

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13:09 <wasamasa> I also merged them into one remote

13:09 <Grantlyk> Thanks for the feed back thought :) all feed back is welcome

13:09 <wasamasa> but that made merging pull requests... weird

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13:11 <Grantlyk> wasamasa do you still have mupltiple remotes?

13:11 <Grantlyk> and what were the two remotes? github & bitbucket?

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13:12 <wasamasa> Grantlyk: well, I got rid of that all

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13:13 <Grantlyk> Ahh okay, when you had it though, what was it?

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13:14 <wasamasa> I think it was one for origin, github and bitbucket

13:14 <wasamasa> and origin pointed to the github and bitbucket urls

13:14 <Grantlyk> Alright, thanks

13:15 <Grantlyk> and if you had to do that again in future

13:15 <wasamasa> http://bytexbyte.com/pushing-to-multiple-git-remotes-at-once

13:15 <Grantlyk> would you ever use something that done it all in one command?

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13:15 <wasamasa> something along these lines

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13:22 <shevy> https://schneide.wordpress.com/2015/03/30/managing-cs-complexity-or-learning-to-enjoy-c/

13:22 <shevy> guys look at this title

13:22 <shevy> you can learn to enjoy C++

13:22 <shevy> you can MANAGE its complexity!

13:23 <certainty> preach brother

13:23 <shevy> no longer do we have to strife for simplicity

13:23 <shevy> why make things simple when you can make them complicated

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13:23 <shevy> certainty is lisp complicated?

13:24 <certainty> shevy: no!

13:24 <wasamasa> common lisp maybe

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13:24 <certainty> it's not even complex

13:24 <wasamasa> its standard is as long as C++

13:24 <workmad3> shevy: lisp is super-easy... everything is a list

13:24 <certainty> well wasamasa is right, there might be complex/complicated dialects

13:24 <shevy> hehehe

13:24 <shevy> that reminds me of everything is an object

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13:25 <certainty> until it isn't

13:25 <certainty> unityped languages and all that

13:25 <workmad3> shevy: lisp makes it a reality though... the entire program is a list, which you can manipulate through lisp macros (which are also lists)...

13:25 <wasamasa> clojure tries catching up with common lisp

13:25 <workmad3> (I'm being somewhat facetious here, it's been a long time since I did any lisp and my grasp was always a bit sketchy :) )

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13:26 <certainty> workmad3: you're basically right though

13:26 <wasamasa> lisp code is pretty close to the generated AST

13:26 <workmad3> certainty: yeah... but there are symbols and some other things too, which are what you have lists *of* :)

13:26 <certainty> that said i havened hacked any scheme for some time now :(

13:26 <certainty> workmad3: atoms

13:26 <workmad3> that's the word!

13:26 <certainty> have not, even

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13:27 <certainty> workmad3: really it's not all about cons-cells or lists anymore. we have all kinds of datastructures, like vectors and maps

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13:28 <certainty> but lists are still the working horse in lisps, except clojure which uses vectors and maps heavily

13:29 <shevy> find . -iname '*.jp*g' | xargs -L 1 -I @ identify -format '%[EXIF:DateTime] %d/%f\n' @ | egrep '^[[:digit:]]{4}:12' | cut -d' ' -f3- | tar -cf december.tar -T -

13:29 <shevy> pipes are so ... elegant

13:30 <certainty> until they aren't

13:30 <shevy> I think ruby spoiled me :(

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13:30 <shevy> certainty are you actually still writing code these days or are you just idling?

13:30 <arup_r> is it?

13:30 <arup_r> how shevy?

13:30 <certainty> shevy: mostly idling and trolling people in #ruby

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13:31 <shevy> arup_r yeah; for instance, I use lots of aliases, and even aliases that end with ?

13:31 <workmad3> wasamasa: never realised the common-lisp spec was so large... I'm gonna guess that there's a lot less about the language and a lot more in the standard library though (C++ spec seems to have almost 450 pages just on the language spec, the rest is the stdlib)

13:31 <shevy> like: "cpu?" tells me what cpu the machine has I am on

13:31 <certainty> shevy: that's so wrong

13:31 <shevy> and when I look complicated examples like the above, I just can not be bothered to want to decompose it until I understand it

13:31 <certainty> cpu? should return a boolean

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13:31 <certainty> my aliases usually start with ,

13:31 <shevy> certainty oh yeah I know that convention :)

13:31 <shevy> hmm why , ?

13:32 <certainty> dunno

13:32 <certainty> i started it some day

13:32 <shevy> easier to type?

13:32 <shevy> aha... weird

13:32 <certainty> probably

13:32 <shevy> you scare me certainty

13:32 <certainty> ,hgfe

13:32 <shevy> good thing that I am not you!

13:32 <wasamasa> workmad3: sounds about right

13:32 <shevy> huh... what is "hgfe" short for

13:32 <wasamasa> workmad3: my impression was that even experienced people keep finding useful standard functionality in the standard

13:32 <shevy> high game, fun enemy

13:32 <shevy> hot girl, free energy

13:32 <shevy> nope, I can't figure it out

13:32 <workmad3> wasamasa: in CL?

13:32 <wasamasa> workmad3: despite it not looking as large these days compared to the standard libraries of something like ruby

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13:32 <wasamasa> workmad3: yes

13:33 <certainty> shevy: that's an alias for a function that creates a mercurial feature branch with the given issue-id.

13:33 <shevy> ack

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13:33 <workmad3> wasamasa: sounds about right... I keep on finding useful stuff in the ruby stdlib that I hadn't realised was there :)

13:33 <shevy> come to git man!

13:33 <certainty> nah

13:33 <shevy> :)

13:33 <certainty> i like mercurial

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13:33 <workmad3> wasamasa: my experience with C++ indicates that even experienced people keep on finding new and interesting edge-cases and compiler bugs when they read through the language spec :)

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13:34 <certainty> workmad3: as a matter of fact the upcoming scheme standard is devided into a small and a large language.

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13:34 <wasamasa> fun

13:34 <wasamasa> they still aren't ready with the large one, right?

13:34 <certainty> nope

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13:35 <workmad3> certainty: the small language is 'everything is a list' and the large one is 'almost everything is a list, but sometimes we like hashes'?

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13:36 <wasamasa> workmad3: well, no, the larger one is all about nice-to-haves

13:36 <wasamasa> workmad3: like, a networking library

13:37 <wasamasa> workmad3: or unicode support

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13:37 <workmad3> wasamasa: :P

13:37 <wasamasa> workmad3: or FFI

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13:40 <certainty> workmad3: nope not really but it aims somewhat in that direction. Scheme always emphasized that a language needs not be large to be useful/powerful instead it should focus on removing the limitations that make more features appear to be needed. That's even the forword to r5rs. So after r6rs we voted for a standard that is again more true to those roots

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13:40 <certainty> but also we acknowledged that there are other needs in the real programming world these days

13:40 <certainty> so the plan emerged to split the two things

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13:40 <certainty> the pure/tiny small language and the rest that builds on that and provides all the bells and whistles

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13:44 <Timgauthier> so almost like a framework?

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13:44 <shevy> certainty do you know the game/world nazghul/haxima? I think I already showed you... it's written in scheme

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13:45 <arup_r> ok shevy: bye for now..

13:45 <shevy> arup_r yca

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13:46 <shevy> http://sourceforge.net/projects/nazghul/

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13:47 <shevy> the scheme code for the world is cool

13:48 <certainty> Timgauthier: kind of. yeah

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13:48 <certainty> shevy: yepp you showed me

13:48 <shevy> (put (mk-ladder-down 'p_eastpass 14 9) 4 14)

13:48 <shevy> even has embedded ascii maps hehe http://pastie.org/pastes/10064771/text

13:49 <certainty> today i have a greater tendency to statically typed functional languages, but scheme remains my first love

13:49 <shevy> it's better to read than C code

13:49 <certainty> yepp

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13:49 <shevy> I still don't like the ((((

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13:49 <ddv> yep don't like it either

13:50 <shevy> in the game wesnoth, they brought the ( to another level

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13:50 <shevy> they use XML (WML) like a programming language

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13:50 <shevy> though a few years ago, they also started to use lua, so now I am confused

13:50 <ddv> what is it noth

13:50 <certainty> ah parens are ignorable

13:50 <shevy> but XML-languages as a programming language, now that sucked the most

13:50 <shevy> certainty yes.. in ruby!!!

13:51 <workmad3> shevy: do you mean you don't love and adore XSLT?

13:51 <shevy> workmad3 I guess it had its peak some years ago

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13:52 <shevy> I read a while ago, in HTML5, they don't conform to some std or dtd anymore whereas in html4 I think that was still necessary? at least in html4 strict

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13:52 <shevy> so that shows... nobody really loves XSLT anymore! nor XML! save for java ant

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13:53 <workmad3> well, html4 wasn't XML anyway

13:53 <certainty> shevy: hehe, i mean you shouldn't put your focus on the parens. That's just a tiny bit of syntax. Maybe you can focus on the uniformity sexpressions introduce

13:53 <maasha> hey, is there a method in Enumerable or such that shows the number of iterations performed?

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13:53 <maasha> apart from each_with_index

13:53 <shevy> maasha what kind of iterations?

13:53 <ddv> maasha: use a counter variable?

13:54 <shevy> well each_with_index has that right

13:54 <workmad3> maasha: hehe "is there any method for an enumerable that will tell me what iteration I'm on... apart from the method that does exactly that?"

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13:55 <workmad3> maasha: if you want it for an arbitrary enumerator, there's .with_index... e.g. '.map.with_index {|item, index| ...}'

13:55 <havenwood> maasha: `each.with_index(1)` if you want to start with 1

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13:56 <maasha> I expressed myself pretty badly I think. So lets say I have an enumerable object, and I yielded from it a couple of times. Now I would like to check how many times it has yielded. Does that make sense?

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14:00 <romking> question, let's say I have a strange log file with various type of ip addresses logged in it, let's say I wanted to match on a string that was something like "WAF-Ip-Address: 10.0.2.100" to get the ip address, what's the best way?

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14:02 <shevy> romking many ways

14:02 <shevy> regex would probably be most reliable

14:02 <shevy> if your string is like that though, you can do .split(' ').last

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14:03 <shevy> for regex... string = "WAF-Ip-Address: 10.0.2.100"; string =~ /Address: (\s+)/

14:03 <shevy> moment

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14:03 <shevy> string =~ /Address: (\d+.\d+.\d+.\d+)/

14:03 <shevy> $1 # => "10.0.2.100"

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14:04 <shevy> you can use http://rubular.com/ actually to test live

14:04 <jhass> romking: the best way depends on the possible false positives really

14:05 <jhass> how different the formats are that you want to match and how similar it is to data you don't want to match

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14:06 <romking> ok thanks

14:06 <romking> will check in a bit

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14:08 <jhass> oh, github switched back to a green status https://status.github.com/messages

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14:09 <workmad3> woo!

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14:09 <havenwood> April fools!

14:10 <havenwood> No wait, wrong day. :P

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14:11 <havenwood> They did a good job of mostly staying up. Github going down for days would have been no fun at all.

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14:13 <ddv> I guess github spends thousands of dollars a day

14:14 <ddv> to mitigate that attack

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14:14 <kstuart> Would

14:14 <kstuart> oops!

14:15 <DaniG2k> jeez

14:15 <shevy> man

14:15 <shevy> I hate the first april

14:15 <DaniG2k> how do you DDoS github

14:15 <kstuart> Could make an interesting read if they do a write-up on the experience, once the dust settles

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14:15 <shevy> especially when jokes happen TWO DAYS before 1. april

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14:15 <shevy> DaniG2k dunno, I am sure China can do

14:16 <DaniG2k> shevy: probably

14:16 <DaniG2k> need some massive amount of servers for that

14:16 <DaniG2k> and a pretty bad inferiority complex

14:17 <ddv> DaniG2k: they redirect western traffic going to baidu to github

14:17 <ddv> or other chineze sites

14:17 <ddv> chinese*

14:17 <DaniG2k> hahahaha

14:17 <DaniG2k> what a bunch of jokers

14:17 <DaniG2k> http://asia-gazette.com/china/2015/3/yahoo-s-exit-china-closes-chapter-difficult-business-partnership

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14:27 <adaedra> <DaniG2k> how do you DDoS github

14:28 <adaedra> By using china’s great firewall, apparently

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14:30 <gregf_> heh

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14:34 <jhass> I still doubt that was the only component though

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14:43 <hectortrope> Hi any ruby book for linux system administrators?

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14:46 <agarie> hectortrope: I've heard good things about this book http://www.amazon.com/Practical-System-Administration-Experts-Source/dp/1590598210 but I never read it, so take that with a grain of salt :P

14:46 <pl1ght> hectortrope: there are a couple decent, "Build Awesome Command-Line Applications in Ruby 2" and "Practical Ruby for System Administrators"

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14:49 <hectortrope> Thank you Guys agarie pl1ght

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14:51 <zhan__> sdf

14:52 <zhan__> hi

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15:58 <izzol> Hi

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15:59 <izzol> Can someone please explain me what is for and when I should use Singleton Class? I'm trying to understand it but so far it's a mess :(

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15:59 <izzol> I already tried google but cannot find any nice explanation :(

16:00 <GaryOak_> I'm sure you've heard, only use a singleton when you need one and only one instance of a class

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16:00 <izzol> GaryOak_: yes

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16:00 <shevy> izzol perhaps if you make a game, and have one class GameEngine

16:00 <shevy> and in that class you have lots of player objects

16:01 <GaryOak_> something like logging in your code as well

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16:01 <GaryOak_> You only need a single instance to write to a log file

16:01 <izzol> GaryOak_: but every self.something is a singleton class ?

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16:02 <workmad3> shevy: which is great... right up until you actually end up allowing > 1 GameEngine because you're wanting to allow a server mode that runs several headless game engines for server-side multiplayer stuff :P

16:02 <GaryOak_> Well Ruby has another concept of a singleton

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16:02 <shevy> workmad3 we don't allow that

16:02 <workmad3> izzol: in ruby, 'singleton class' is not a Singleton pattern (well, it kinda is a singleton, in that each object has one, and only one, singleton class)

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16:03 <shevy> you guys need to keep things really simple

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16:03 <workmad3> shevy: I was more pointing out that for most singleton cases I've encountered, it doesn't take much thought to come up with a situation where it's not actually desirable to have a Singleton ;)

16:03 <colorisco> i created channel with amazing AI http://s4.postimg.org/p4hdfa4zh/Screenshot_2015_03_31_18_24_22.png

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16:03 <shevy> I actually think I never needed a singleton so far

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16:03 <GaryOak_> they are pretty rare

16:04 <workmad3> shevy: most of the time I've encountered them, they've been a crappy wrapper around global variables

16:04 <shevy> hehe

16:04 <GaryOak_> what workmad3 said

16:04 <shevy> I actually added "include Singleton" in mud objects... where there were unique items... I thought they should be singletons... for no particular reason

16:04 <workmad3> people seem to go "Oh crap, global variables are bad? Well then, it's a good thing this isn't a global variable, it's a Singleton class!"

16:04 <shevy> Thor's hammer!

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16:05 <shevy> can you actually use global variables in a semi-global variant? like you could... use a module, and an @ivar on that module, and access a method that returns that @ivar right?

16:05 <workmad3> shevy: sure

16:05 <GaryOak_> it's just a module level var

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16:06 <workmad3> shevy: you could do the same with a class ivar and access it through a class-method :P

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16:06 <havenwood> izzol: A Module if you're not instanciating. A Class if you are instanciating. Mixin Singleton if it's important it only be instanciated once.

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16:06 <shevy> havenwood sounds like a lord of the rings priest there

16:06 <shevy> or like Gandalf

16:06 <GaryOak_> WHAT

16:06 <shevy> Gandalfwood!

16:07 <shevy> izzol so as you can see... nobody uses them :D

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16:09 <izzol> shevy: :)

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16:09 <havenwood> shevy: This is your realm, and the heart of the greater realm that shall be. The Third Age of C is ended, and the new age is begun; and it is your task to order its beginning and to preserve what must be preserved.

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16:10 <banister> havenwood you messed with rust at all?

16:10 <havenwood> banister: just poked at it, but no not really

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16:10 <izzol> but someone told me that I'm using singleton here: http://pastebin.com/zV7eFEHj when I'm calling this by Monit::Check.ping(host)

16:10 <helpa> Hi izzol. We in #ruby would really appreciate it if you did not use pastebin during your time with us.

16:10 <helpa> Pastebin is not good because it loads slowly for most, has ads which are distracting and has terrible formatting. Please use Gist (http://gist.github.com) or Pastie (http://pastie.org) instead. Thanks!

16:10 <havenwood> banister: have you?

16:11 <banister> havenwood no, but i'm looking for a new language to get my teeth into

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16:11 <c-c> had a look at go?

16:11 <shevy> izzol why? that is just a class method there

16:12 <GaryOak_> Rust Rust Rust!

16:12 <shevy> you can add lots more class methods to class Ping

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16:12 <izzol> hmm ok

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16:12 <shevy> the reason people like class methods is because it can do a lot for readable code. Like: Monster.create :goblin

16:12 <shevy> though you could do Goblin.new too I guess :P

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16:13 <havenwood> banister: i've been enjoying crystal-lang. it's different enough from Ruby to be exciting but familiar enough i feel productive.

16:13 <shevy> things may be easier to remember though... Ftp.connect to: 'www.ruby.com'

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16:13 <totimkopf> hehe

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16:14 <totimkopf> what itch does crystal scratch? a ruby-like language that can be compiled?

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16:14 <shevy> I guess so. It promises to be FAST

16:14 <izzol> My problem is that I want to send "hosts" to the class method or instance method (not sure which one yet). Then that method will check if host is Up or Down by Ping module. In that case it's better to have instance or class?

16:14 <shevy> they may well obsolete mruby!

16:14 <totimkopf> Crystal On Rails

16:14 <totimkopf> \o/

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16:14 <totimkopf> sounds almost like a drug

16:15 <izzol> As I understand instance will create new object for each host?

16:15 <izzol> and class?

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16:15 <havenwood> totimkopf: a really nice stdlib is forming up. macros. no vm startup time. some neat syntax. etc.

16:16 <totimkopf> nice

16:16 <wasamasa> macros?

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16:16 <wasamasa> must surely have byzantine syntax

16:16 <havenwood> http://crystal-lang.org/docs/syntax_and_semantics/macros.html

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16:17 <GaryOak_> izzol: the code you have won't make multiple classes for each host

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16:17 <havenwood> wasamasa: i dunno why i said macros, just blathering. that wasn't a well thought-out list of why crystal is interesting. :P

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16:18 <banister> havenwood i'm looking for a new language, and it looks ok

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16:18 <havenwood> banister: I find Clojure and Pixie-lang alluring.

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16:19 <GaryOak_> banister: I've been learning rust and I like it a lot

16:19 <havenwood> banister: fowl hasn't talk you into Nim? :)

16:19 <banister> havenwood nim looks cool

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16:19 <banister> GaryOak_ nice, can you some me how to interpolate text into a string in rust?

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16:20 <havenwood> banister: Now if Crystal could just figure out how to do a proper REPL...

16:20 <GaryOak_> banister: you mean like string formatting?

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16:20 <banister> GaryOak_ i mean someting like this; "hello #{name}, how are oyu?"

16:21 <wasamasa> havenwood: well, the syntax looks okayish, pretty template-like

16:21 <GaryOak_> format!("hello {}, how are you?", my_string)

16:21 <wasamasa> havenwood: guess you can do cute things with it

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16:22 <banister> GaryOak_ dat nasty

16:23 <havenwood> banister: i thought these were fun to look at: https://github.com/kostya/benchmarks

16:23 <GaryOak_> compared to ruby sure

16:23 <banister> GaryOak_ doesn't look any better than the #c printf formatting

16:23 <banister> GaryOak_ well, compared to any modern language :)

16:23 <GaryOak_> If you were only going to be printing strings I'm sure they would change the syntax

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16:25 <havenwood> ^ i'm not sure how idiomatic the code is for all langs, but interesting to compare

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16:25 <GaryOak_> It's also because all characters are UTF8 and strings live on the stack

16:26 <colorisco> hey, how delete "[2]" in string "[2] foo bar $200 foo foo"

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16:27 <colorisco> with regex

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16:28 <izzol> ok I think I understand now :P

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16:29 <max96at> certainty: https://regex101.com/

16:29 gr33n7007h has joined #ruby

16:29 <gregf_> colorisco: str = "[2] foo bar $200 foo foo"; str.gsub!(/\[\d+\]/, ""); str

16:29 paulcsmith has joined #ruby

16:29 <colorisco> thanks

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16:30 <gregf_> colorisco: you need to escape [,] as those are special chars in a regex

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16:39 <gaussblurinc1> hi! could guard run commands every hour?

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16:40 <havenwood> gaussblurinc1: if you modify the filesystem hourly :P

16:40 <jhass> sounds like job for whenever rather than guard

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16:40 <gaussblurinc1> jhass: yes

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16:43 <adaedra> or cron, depending on the task.

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16:45 <havenwood> adaedra: whenever is just a cron wrapper

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16:52 <gr33n7007h> just installed rvm with ruby 2.2.1 do I now switch global gemset?

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16:58 <miah> https://rvm.io/rvm/basics

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16:59 <gr33n7007h> cheers miah :)

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17:13 colorisco is now known as colorados

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17:15 <colorados> amazin AI bot on #citipoly channel

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17:26 <shevy> someone perma-ban colorados pls

17:27 <jhass> pls is not enough of a reason I'm afraid

17:27 agrinb has quit [Ping timeout: 256 seconds]

17:27 <GaryOak_> what is going on!

17:28 rhllor has quit [Quit: rhllor]

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17:28 <jhass> nothing!

17:28 <jhass> DeBot: !hangman gems

17:28 <DeBot> ␣␣␣␣␣␣␣␣␣ [] 0/12

17:29 <jhass> DeBot: _

17:29 <DeBot> ␣␣␣␣␣␣␣␣␣ [_] 1/12

17:29 <jhass> DeBot: -

17:29 <DeBot> ␣␣␣␣␣␣␣␣␣ [_-] 2/12

17:29 Volsus has quit [Ping timeout: 256 seconds]

17:29 c0m0 has quit [Ping timeout: 256 seconds]

17:29 <jhass> :)

17:29 <wasamasa> DeBot: earnest

17:29 <DeBot> ␣e␣s␣␣␣␣␣ [_-arnt] 6/12

17:29 <GaryOak_> DeBot: S

17:29 <DeBot> ␣e␣s␣␣␣␣␣ [_-arnt] 6/12

17:29 <jhass> DeBot: io

17:29 <DeBot> ␣e␣s␣␣oo␣ [_-arnti] 7/12

17:29 <GaryOak_> DeBot: f

17:29 <DeBot> ␣e␣s␣␣oo␣ [_-arntif] 8/12

17:29 <wasamasa> DeBot: p

17:29 <DeBot> ␣e␣s␣␣oo␣ [_-arntifp] 9/12

17:29 lodgenbd has quit [Client Quit]

17:29 <GaryOak_> DeBot: r

17:29 <DeBot> ␣e␣s␣␣oo␣ [_-arntifp] 9/12

17:29 spyderman4g63 has quit [Ping timeout: 272 seconds]

17:29 <wasamasa> DeBot: k

17:29 <DeBot> ␣e␣s␣␣oo␣ [_-arntifpk] 10/12

17:29 <GaryOak_> k really?

17:30 <GaryOak_> DeBot: h

17:30 <DeBot> ␣e␣s␣hoo␣ [_-arntifpk] 10/12

17:30 freerobby has quit [Quit: Leaving.]

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17:30 <jhass> DeBot: p

17:30 <DeBot> ␣e␣s␣hoo␣ [_-arntifpk] 10/12

17:30 <centrx> DeBot, hooey

17:30 <DeBot> ␣e␣s␣hoo␣ [_-arntifpky] 11/12

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17:30 <centrx> DeBot, potato

17:30 <DeBot> ␣e␣s␣hoo␣ [_-arntifpky] 11/12

17:30 <jhass> DeBot: l

17:30 <DeBot> ␣e␣s␣hool [_-arntifpky] 11/12

17:30 <jhass> DeBot: c

17:30 <DeBot> ␣e␣school [_-arntifpky] 11/12

17:30 <GaryOak_> DeBot: c

17:30 <DeBot> ␣e␣school [_-arntifpky] 11/12

17:31 <centrx> wtf

17:31 Rayford is now known as StephenOTT

17:31 <centrx> DeBot, wtf

17:31 <DeBot> medschool [_-arntifpkyw] 12/12 You lost!

17:31 <centrx> that's not a word

17:31 <GaryOak_> haha

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17:31 <jhass> "Medschool makes your API Docs smarter"

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17:43 <miah> wow thats really annoying

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17:44 <GaryOak_> ahhahaha

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17:44 <jhass> set it on ignore, the moment somebody interrupts regular channel traffic with it it's gone

17:45 albedoa has joined #ruby

17:45 <miah> who owns the bot? they should just remove it.

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17:46 <jhass> me does

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17:46 <miah> can you take it elsewhere?

17:47 <jhass> it already is elsewhere, can you ignore it?

17:47 <miah> no

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17:47 <jhass> why not?

17:48 <miah> because i shouldnt have to?

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17:48 <miah> i've seen people mention in this channel previously that the only bot permitted was eval-in_

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17:48 <jhass> things change, we got helpa here too now

17:49 <jhass> it's proven to be fun to quite some people so far the ratio is about 14/2

17:49 <jhass> with you being one and the other person being fine to put it onto their ignore list

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17:49 <jhass> kay, bye

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17:51 <shevy> you scared miah away!

17:52 <jhass> one unreasonable person less, what a pity

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17:54 <banister> jhass what does helpa do

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17:55 <jhass> http://pastebin.com/sucks

17:55 <centrx> Someone insulting Hangman Bot?

17:55 <helpa> Hi jhass. We in #ruby would really appreciate it if you did not use pastebin during your time with us.

17:55 <helpa> Pastebin is not good because it loads slowly for most, has ads which are distracting and has terrible formatting. Please use Gist (http://gist.github.com) or Pastie (http://pastie.org) instead. Thanks!

17:55 <jhass> this for example

17:55 <jhass> !gist

17:55 <helpa> http://gist.github.com - Put your codes online with pretty syntax highlighting and the ability to embed it into other pages.

17:55 <jhass> or this

17:55 quimrstorres has joined #ruby

17:55 <jhass> and so on

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18:05 <KrzaQ> let's say I have a string '#a#b#', I want to split it by '#', do replacements, and join back, but it removes the last '#'. How can I fix that?

18:05 <jhass> try without abstractions

18:05 <jhass> usually yields better answers

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18:06 <jhass> fine then not

18:06 <jhass> >> "#a#b#".split("#", -1).join("#")

18:06 <eval-in_> jhass => "#a#b#" (https://eval.in/307100)

18:07 <KrzaQ> >> "#a#b#c".split("#", -1).join("#")

18:07 <eval-in_> KrzaQ => "#a#b#c" (https://eval.in/307101)

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18:07 <KrzaQ> cool

18:07 <KrzaQ> thanks!

18:07 <KrzaQ> I guess I should've read the docs more carefully

18:08 <jhass> split is one of the methods with one too many special cases ;)

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18:08 <jhass> I still suspect there's a better way for your real problem, but since you don't want to share it...

18:08 <KrzaQ> well, the limit argument didn't seem like what I'd want

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18:09 <KrzaQ> I have a map of rules (name->rule), some of which are recursive. I want to flatten them

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18:10 <KrzaQ> so it's something like { 'foo' => '#foo# == true && #bar# == 42', 'qux' => '#foo# && #baz# == 1' }

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18:11 <KrzaQ> well, foo uses itself, darn

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18:11 <KrzaQ> in any case, I wanted to take '#foo#' from qux and replace it with the whole rule

18:11 <jhass> until no variable is left I guess?

18:11 <KrzaQ> yeah

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18:12 <jhass> sounds like a simple gsub

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18:12 <jhass> in a recursive method with "no variable left" as exit condition

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18:14 <jhass> >> replacements = {"a" => "b", "c" => "d"}; "ab".gsub(Regexp.union(replacements.keys), replacements)

18:14 <eval-in_> jhass => "bb" (https://eval.in/307102)

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18:14 <jhass> er

18:14 <jhass> >> replacements = {"a" => "b", "c" => "d"}; "ac".gsub(Regexp.union(replacements.keys), replacements)

18:14 <eval-in_> jhass => "bd" (https://eval.in/307103)

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18:15 <jhass> gotta iterate over the values and map the keys into "#x" in your case, but like that

18:15 <KrzaQ> heh

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18:15 <KrzaQ> I googled for gsub over hash like half an hour the other day

18:15 <jhass> the power of #ruby! :P

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18:16 <baweaver> Just found out #index_by is a thing in Rails

18:16 <baweaver> that's handy

18:16 <KrzaQ> I'm not sure how to extract ## from the variable (they're not present in rule names)

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18:17 <jhass> you just map the hash

18:17 <KrzaQ> though I guess I can make a copy of the map with changed key names

18:17 <jhass> yeah

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18:17 <KrzaQ> yay, thanks. You're really helpful

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18:17 <jhass> >> {"a" => "b", "c" => "d"}.map {|k, v| ["##{k}#", v] }.to_h

18:17 <eval-in_> jhass => {"#a#"=>"b", "#c#"=>"d"} (https://eval.in/307104)

18:17 <KrzaQ> How do I detect if gsub made any changes? String comparison?

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18:18 <jhass> cant you just abort on .values.any? {|rule| rule.include? "#" } ?

18:18 <baweaver> User.first(2).index_by(&:first_name) # => { 'foo' => User, 'bar' => User }

18:18 * baweaver is talking about something unrelated

18:19 <KrzaQ> nope, because #var# is also used for runtime variables of the program I'm prepping the config for

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18:19 <bradland> man, i literally just saw something the other day about a gsub replacement that reports changes in addition to the string

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18:19 <jhass> mh, you can make a copy and use .gsub!

18:20 <jhass> which will return nil when no changes were made

18:20 <jhass> so make a deep copy of the hash maybe

18:20 <baweaver> then

18:20 <KrzaQ> mhm

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18:22 <baweaver> >> {a: '1', b: '2'}.map { |k,v| [k, v.gsub!(/1/, '3')] }.to_h.select { |k,v| v.nil? }

18:22 <eval-in_> baweaver => {:b=>nil} (https://eval.in/307105)

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18:23 <shevy> beaver!

18:23 <shevy> you are back

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18:23 <romking> say I have a log file, say an access log file, and I want to count all of the occurances of ip addresses in it, what's an easy ruby way to do that?

18:23 <baweaver> A beaver is never early, and never late. He appears precisely when he means to.

18:24 <baweaver> psuedo code

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18:24 <jhass> more like replacements = rules.map {|var, rule| ["##{var}#", rule.dup] }; replacements while replacements.values.any? {|rule| rule.gsub!(...) } I guess

18:24 <baweaver> ip_file.lines.select { |line| line =~ /\d{3}\.\d{3}\.\d{3}\.\d{3}\/ }

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18:25 <KrzaQ> It doesn't *have* to be a one-liner :P

18:25 <baweaver> a more proper ip regex can be used

18:25 <jhass> KrzaQ: in IRC ; are newlines :P

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18:25 <KrzaQ> good point

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18:26 <baweaver> buuuut I don't want to look that RFC nightmare thing up.

18:26 <jhass> that problem would be a good coding challenge actually

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18:27 <romking> well I am asking if the log file has 2 thousand entries, and there's 20-0 uniq ips in there, but all randomly accessed, I want to get a count of each

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18:27 <KrzaQ> is .dup the same as .clone?

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18:27 <baweaver> romking: then put a #length on the end of there

18:27 <rubie> no they are not the same

18:27 <rubie> but they do similar things

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18:27 <baweaver> you're selecting all lines with an ip in there, which gives an array of all matches.

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18:28 <romking> actually baweaver I am doing

18:28 <baweaver> Now if you want to rip out the IPs on the other hand, use capture groups

18:28 <romking> chunk.each_line do |line|

18:28 <romking> if line =~ /CF-Connecting-IP: (\d+.\d+.\d+.\d+)/

18:28 <romking> cfConntingIp = line.split("CF-Connecting-IP: ", 2)

18:28 <romking> puts cfConntingIp

18:28 <jhass> KrzaQ: iirc .clone is supposed to make a deep copy and .dup a shallow one, the default implementations from Object both make a shallow one though

18:28 <romking> end

18:28 <baweaver> stio

18:28 <baweaver> stop

18:28 <baweaver> gist it

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18:29 <jhass> KrzaQ: there were some differences in how .frozen? is transferred but I can never remember those

18:29 <baweaver> romking: gist.github.com

18:29 <rubie> is there a method to call .each but start at index 1 instead of 0

18:29 <jhass> and I think even Array#clone and Hash#clone are still shallow

18:29 <KrzaQ> That's above my level right now

18:29 <romking> https://gist.github.com/rcsavage/6ff9eaf5716fe4edc52d

18:29 <baweaver> otherwise it ends up fogging up the channel fast

18:29 <KrzaQ> rubie: foo[1..-1].each{...}

18:29 <jhass> KrzaQ: so for the most part you need to care about there's no difference ;)

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18:30 <baweaver> (1..10).group_by(&:even?)

18:30 <baweaver> >> (1..10).group_by(&:even?)

18:30 <eval-in_> baweaver => {false=>[1, 3, 5, 7, 9], true=>[2, 4, 6, 8, 10]} (https://eval.in/307109)

18:30 <baweaver> you can use that

18:30 <rubie> KrzaQ: ok thanks

18:30 <baweaver> just pass in the IP address

18:30 <jhass> rubie: or foo.drop(1).each

18:30 <rubie> nice

18:30 <KrzaQ> drop

18:30 <KrzaQ> I was looking for that the other day and came up with this slicing solution

18:30 <baweaver> then map that: grouped_vals.map { |ip, matches| [ip, matches.length] }

18:30 <KrzaQ> it really should be referenced by .take

18:31 <jhass> KrzaQ: you just need to idle here more :P

18:31 <KrzaQ> I will from now on

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18:31 <baweaver> so something like

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18:32 <baweaver> >> (1..10).group_by(&:even?).map { |is_even, matches| [is_even, matches.length] }.to_h

18:32 <eval-in_> baweaver => {false=>5, true=>5} (https://eval.in/307110)

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18:32 <baweaver> romking: except pass a block to group_by to return the ip you want to group by and you're set.

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18:35 <KrzaQ> okay, so while I'm at it, is there a better way to write foo[bar[:baz]]?

18:35 <jhass> no

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18:38 <romking> Ok another question: is there a way to auto-sort & count the items inside an array?

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18:39 <GaryOak_> >> [2, 4, 3].sort.length

18:39 <eval-in_> GaryOak_ => 3 (https://eval.in/307112)

18:39 <jhass> "auto-sort"?

18:40 <GaryOak_> insert in order

18:40 <GaryOak_> ?

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18:40 <crowell> I think you want .sort!.length

18:40 <baweaver> crowell: don't

18:40 <jhass> was my first intuition but then asking whether there's .size/.length...

18:41 <jhass> >> [1, 2, 3].sort!

18:41 <eval-in_> jhass => [1, 2, 3] (https://eval.in/307114)

18:41 <jhass> oh, sneaky sort!

18:41 <romking> meaning iparray = ["2", "2", "3", "2", "1"], which will give me all 2s =3, all 3s = 1, and all 1s = 1

18:41 <baweaver> >> ["2", "2", "3", "2", "1"].group_by { |v| v }

18:41 <eval-in_> baweaver => {"2"=>["2", "2", "2"], "3"=>["3"], "1"=>["1"]} (https://eval.in/307115)

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18:42 <baweaver> >> ["2", "2", "3", "2", "1"].group_by { |v| v }.map { |k,v| [k, v.length] }.to_h

18:42 <eval-in_> baweaver => {"2"=>3, "3"=>1, "1"=>1} (https://eval.in/307116)

18:42 <GaryOak_> BOOM! ^

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18:42 <jhass> ah, a pesky .length'er

18:42 <jhass> .size'rs unite!

18:42 <crowell> irb(main):008:0> a = [1,3,3,2]

18:42 <crowell> => [1, 3, 3, 2]

18:42 <crowell> irb(main):009:0> a.uniq.each{|i| p a.count(i)}

18:42 <crowell> 1

18:42 <crowell> 2

18:42 <crowell> 1

18:42 <crowell> => [1, 3, 2]

18:42 <baweaver> avoid bang methods unless you really need to use them, makes a mess

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18:42 <jhass> crowell: /topic

18:42 <crowell> sry

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18:42 <baweaver> jhass: any reason on it or just an alias?

18:43 <jhass> just an alias and shorter to type

18:43 <baweaver> fair enough

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18:43 <romking> nice

18:43 <romking> thanks!

18:43 <jhass> .map over .collect for much the same reason really

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18:43 <baweaver> map over collect and reduce over inject because I've used too much JS / OCaml

18:44 <baweaver> or foldL from too much Haskell :D

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18:44 <shevy> well you save more in map vs. collect, than reduce vs. inject

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18:44 <baweaver> I still think F# and Scala are effectively OCaml / SML anyways.

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18:44 <jhass> I actually .inject over .reduce. Mostly because used that way, if I had to argue I'd make something up about not all inject usecases reducing a set of values to a single one

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18:45 <baweaver> fair enough

18:45 <baweaver> I normally use it for reduction

18:46 <baweaver> So use whatever name is your intent

18:46 <baweaver> because

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18:46 <baweaver> >> (1..10).inject(:+)

18:46 <eval-in_> baweaver => 55 (https://eval.in/307117)

18:46 <jhass> yeah it's mostly preference really, most of these inject usecases are better with .each_with_object anyway

18:46 <baweaver> is less clear than reduce to me

18:46 <jhass> and I don't like to mix

18:46 <baweaver> fair enough

18:46 <baweaver> most of programming is a preference.

18:47 <jhass> sure

18:47 <baweaver> just as long as there's a source of truth to prevent bikeshedding for days at a time

18:47 <baweaver> Left bracket vs Right bracket.... Ah I hate that nonsense

18:47 <baweaver> just pick one and be done with it, put it in a style guide and enforce it with hooks.

18:48 <baweaver> saves hours of useless debate over semantics.

18:48 piotrj has quit [Remote host closed the connection]

18:48 <baweaver> Anyways, lunch time

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18:49 <jhass> hehe

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19:01 <KrzaQ> jhass: this took ~10 seconds on a file with ~7k lines, but I only needed it once. Thanks.

19:02 <KrzaQ> I wonder how many silly mistakes there are: https://gist.github.com/KrzaQ/4df81f54483bc9b2fc2e

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19:02 <jhass> KrzaQ: you can extract rx out of the loop

19:03 <KrzaQ> hm, true

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19:03 <KrzaQ> I try not to litter the scope with useless variables

19:04 <jhass> you can do str = v.gsub directly

19:04 <jhass> I'd also refrain from k,v in actual code, variable, rule seems better

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19:05 <jhass> and you don't actually need to recreate rule_changes all the time, after all we cloned the rule in order to own it and thus can reasonably call .gsub! on it

19:05 <jhass> which means you can turn your map into a values.each do |rule|

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19:07 <KrzaQ> mhm

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19:07 <KrzaQ> will do that in the future

19:07 <KrzaQ> thasnk

19:07 <KrzaQ> ... thanks

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19:07 <jhass> and I think by using the fact that .gsub! returns nil when no changes were made, you could do changes &&= rule.gsub!(...)

19:07 <KrzaQ> &&?

19:07 <KrzaQ> not ||?

19:07 <jhass> &&=

19:07 <jhass> mh, no nvm

19:07 <a5i> whats the equivalent of for (var i = 0; i < array.length; ++i) { in Ruby ?

19:08 <jhass> we don't want the short circuiting here I think

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19:08 <KrzaQ> I want to repeat as long as there was at least one change done

19:08 <jhass> a5i: depends on the loop body

19:08 <a5i> oh?

19:08 <jhass> a5i: yeah

19:09 <jhass> depending on what you use i for there's an idiomatic variant

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19:10 <a5i> https://www.irccloud.com/pastebin/1lAKQFDU

19:10 <a5i> jhass, i'm just rewriting that

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19:11 <jhass> in that case I'd go with .each_index

19:11 <yxhuvud> I'd go with .sort

19:11 <jhass> yxhuvud: nope, that's quicksort not bubblesort :P

19:12 <yxhuvud> jhass: that is almost always a feature.

19:12 <jhass> .size.times do |i| is also a common idiom

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19:12 <jhass> yxhuvud: the only implementations of bubble sort are educational, at least that's what I want to believe

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19:13 <yxhuvud> jhass: you are not cynical enough :P

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19:13 <jhass> I'm still young

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19:13 <jhass> gotta use that time

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19:14 <crowell> why would you want bubble sort over qsort/

19:14 <jhass> because you came up with it yourself and feel smart that you invented a sorting algorithm

19:14 <crowell> you can make ruby do a stable sort with something like "sort_by.with_index { |x, idx| [x, idx] }"

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19:15 <yxhuvud> crowell: well, maybe you want to heat your building or something.

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19:22 <rubie> hi all: im a little confused about the difference between integers and arrays. If i create a variable set to an array and modify the original array the variable i set to that array changes too, however thats not the case with integers, here is an example....https://gist.github.com/anonymous/161f2b3aec88c548fc91

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19:23 <Sou|cutter> what if you did array += [5] instead of <<

19:24 <Sou|cutter> = is an assignment of a variable, << is an operator that modifies the existing variable

19:25 <rubie> ahh

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19:26 <Sou|cutter> also if you really want a dupe, there's a dup method

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19:26 <rubie> ya i used that yesterday

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19:27 <rubie> still messing learning about this tho

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19:28 <rubie> thanks

19:28 <Sou|cutter> no problem

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19:30 <jhass> rubie: it helps to make the differences between variables and objects clear

19:30 <jhass> variables are references to objects

19:30 <rubie> what do you mean by that

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19:31 <jhass> the only way to change a variable is the equal sign =

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19:31 <rubie> ok

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19:32 <jhass> a = 1; a is a reference to the object 1 of class Fixnum; a = "foo"; now a is a reference to the object "foo" of type String. The variable a was changed, the referenced objects were not

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19:33 <jhass> things like +=, -=, /=, *=, ||=, &&= are syntax sugar, for the first part they expand to a = a + b, a = a * b etc, a ||= b expands to a || a = b, a &&= b expands to a && a = b

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19:33 <jhass> so it's really just a = b again, the only way to change a variable is the assignment

19:33 <jhass> everything else changes the referenced object

19:33 <jhass> (or returns a new one)

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19:34 <weaksauce> a5i look at upto and downto as well

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19:34 <Sou|cutter> good explanation

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19:35 <fakam> Hello, http://repl.it/gZr/6 <-- i have a ruby script but it prints out nil when trying to case a array. Can I get some help?

19:35 <Sou|cutter> I feel like it takes experience before object/reference becomes intuitive, though. It'll come

19:35 <jhass> yeah, sure

19:35 <fakam> Thanks

19:35 <apeiros> fakam: that's not how case/when works

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19:36 <apeiros> fakam: your code causes ruby to evaluate the following in e.g. your first when: `users.include?("admin") === choice`

19:36 <fakam> How does it work?

19:36 <apeiros> fakam: use if/elsif for this kind of construct

19:36 <fakam> okay

19:37 <apeiros> though your conditions don't seem to make much sense anyway…

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19:37 <apeiros> users.include?("admin") is a tautology. you set users to ["admin", "moderator", "builder"]. it's already defined that it will include "admin"

19:37 <fakam> hmm we will use a if

19:37 <fakam> thx guys

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19:38 <rubie> jhass: thanks i need to explore this more

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19:41 <rubie> jhass: is a reference and a pointer the same thing?

19:41 <jhass> conceptually pretty much

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19:42 <jhass> though I'm not sure if it really helps to think about them like that

19:43 <jhass> where do you know pointers from?

19:43 <rubie> but a=1 and b=1 .... 1 would be different objects for a and b

19:43 <rubie> just from the videos i watch

19:43 <jhass> ah, tricky case

19:43 <rubie> but a=1 and b=a would reference the same object

19:43 <jhass> let's start with a = "foo"; b = "foo"; there you are right

19:44 <jhass> and if we swap 1 with "foo" again you're still right

19:44 <willharrison> does ruby have pointer variables?

19:44 <jhass> willharrison: not really, no

19:44 <willharrison> oh ok

19:44 <willharrison> I didn't think so

19:44 <Elite6809> most scripting languages don't

19:44 <jhass> willharrison: that doesn't mean assignment copies though

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19:45 <willharrison> I see

19:46 <jhass> rubie: in the case of numbers the literals are always the same objects, though in the general case you're right

19:46 <rubie> what is a literal?

19:46 <jhass> I'm not sure I follow why that conflicts with anything I said though :)

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19:46 <jhass> a literal is a value that exists in your code

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19:46 <jhass> 1, 1.0, "foo", ["foo", 1], {"a" => "b"} are all literals

19:46 <fakam> Back, http://repl.it/ the results are not as they correspond to the if?

19:47 <jhass> fakam: forgot the share link? ;)

19:47 <rubie> can a literal be anything other than a number (int, float)

19:47 <fakam> http://repl.it/

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19:47 <jhass> rubie: yes, see above

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19:47 <rubie> ahh

19:48 <jhass> in Ruby we have Fixnum, Bignum, Float, String, Symbol, Array, Hash and Proc literals (and I probably missed something)

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19:48 <jhass> I guess one could argue that we have Class and Module literals, but meh

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19:49 <rubie> so a = [2]; b = a; a << 4; b changes because its still referencing the object is 4 is being appended to

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19:50 <jhass> more importantly << is a method call, Array#<<, you could write it as a.<<(4)

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19:50 <fakam> jhass you look at the code

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19:51 <jhass> fakam: you still only shared the site, no code

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19:51 <fakam> I did twice

19:51 <fakam> URL: http://repl.it/

19:51 <jhass> yes, twice the same mistake

19:51 <rubie> but a += [4] assigns a to an entirely new array ( the old a + [4] )

19:51 <jhass> no thrice

19:51 <jhass> *now

19:51 <fakam> It's an if now

19:51 <rubie> you might want to save it fakam

19:52 <jhass> rubie: yup, it's a = a + [4] or a = a.+([4]) in method call syntax

19:52 <fakam> i will make a new one

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19:52 <rubie> ahh, thats a really good thing to know

19:52 <fakam> http://repl.it/g0y/1

19:52 <jhass> fakam: notice how the URL is different? ;)

19:52 <fakam> yea thats odd

19:53 <fakam> everything == builder

19:53 <jhass> yeah

19:53 <fakam> why?

19:53 <jhass> since a string never equals true or false

19:54 <jhass> fakam: reduce your code, try to understand what users.include?("admin") actually does

19:54 <fakam> make it a bool?

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19:54 <bradland> fakam: a lot of this doesn't make much sense

19:54 <fakam> it checks if it includes that value

19:54 <bradland> on line 12, what is the result of the method call users.include?("admin")

19:54 <jhass> fakam: say that again without using "it"

19:54 <fakam> its the value of the array

19:55 <bradland> nope

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19:55 <bradland> check the docs for Array#include?

19:55 <bradland> http://ruby-doc.org/core-2.2.1/Array.html#method-i-include-3F

19:55 <bradland> it returns true or false

19:55 <jhass> >> users = %w(admin foobar); users.include?("admin")

19:55 <eval-in_> jhass => true (https://eval.in/307120)

19:55 <fakam> oh no wonder

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19:56 <fakam> thanks

19:56 <bradland> if your usernames are a static list, there's no point in looking up against an array

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19:56 <bradland> even if Array#include? did return the result

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19:58 <fakam> Ahh

19:58 <fakam> noobs

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20:02 <shevy> boobs?

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20:04 <centrx> roobs

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20:05 <ddv> troops

20:05 <bradland> hoops!

20:05 <ddv> i'm out of words

20:05 <storagedragon> roots the noobs boobs troops in hoops?

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20:06 <atmosx> aloha

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20:07 <atmosx> shevy: what are you up to now, work or study?

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20:07 <shevy> atmosx right now we have easter holidays for 2 weeks, then I have 3 exams ("advanced immunology and allergy", "basic technical chemistry" and "sustainable ecology")

20:07 <atmosx> I'm gonna crash to bed. later all

20:08 <atmosx> sustainable ecology hahaha

20:08 <atmosx> awesome :-P

20:08 <shevy> hehe

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20:08 <atmosx> night and have fun in your vacations! :-)

20:08 <shevy> eh just 3.0 ECTS but what I memorize there will be useful for other exams lateron in agritechn/biotech

20:08 <shevy> cya

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20:09 <GaryOak_> I sucked at chemistry

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20:10 <GaryOak_> Good luck shevy

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20:10 <shevy> I do too, I also hate it but there isn't quite a good way around it. My biggest gripe with technical chemistry is that it is based on math, so the questions will involve a lot of math

20:10 <GaryOak_> that sounds gross

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20:11 <shevy> yeah

20:11 <GaryOak_> Chemistry just doesn't make any sense to me!

20:11 <GaryOak_> and 3 sig fig

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20:13 <shevy> well basic chemistry is ok

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20:14 <shevy> but the examples are like, you need to finish some part, get some data out of that, then continue with that for the other part of the same questions about 2 times. so if you make a mistake early on, or can not solve, you have 0 points there

20:14 <GaryOak_> :(

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20:15 <shevy> what I don't quite understand is why we can't use computers

20:15 <baweaver> or notes, or books, or resources in general

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20:15 <baweaver> considering every sane job lets you in the real world.

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20:15 <bradland> considering every sane job benefits from use of computers in the real world

20:15 <baweaver> Relevant rant - http://baweaver.com/blog/2015/03/22/the-impersonal-interview/

20:16 <GaryOak_> only on an exam is speed valued more than correctness

20:16 <shevy> for instance, on the commandline for Glucose, I just do "molmass C6H12O6" and it yields me 180.155 u (g / mol) in like for a total of 4 seconds that it takes me to type the command + formula

20:16 <baweaver> GaryOak_: I don't know about that

20:16 <baweaver> Have you SEEN most large software projects?

20:16 <shevy> but with a classical calculator, man... it takes me like ... half a minute. and I can typo

20:16 <GaryOak_> they want speed and correctness

20:16 <rubie> shevy what is your end goal with your education?

20:17 <baweaver> speed is definitely above correctness far more often than you dare think possible.

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20:17 <shevy> rubie oh man, that's like lightyears off

20:17 <GaryOak_> well yeah, not for mixing chemicals though

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20:17 <GaryOak_> or fabricating medicine

20:17 quimrstorres has joined #ruby

20:17 <baweaver> want to know a horrifying little secret?

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20:18 <baweaver> Every job cuts corners somewhere.

20:18 <shevy> rubie what I myself want to do does not really exist in this form - it would be a mixture of gene therapy, biotechnology and synthetic biology

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20:19 <rubie> nice, you studying systems biology?

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20:19 <shevy> nah not really... as long as the simulations aren't precisely how things would be how a real cell works, it's not really that useful

20:20 <baweaver> Go the SF way, if the job you want doesn't exist then make it.

20:20 <shevy> take bioinformatics - it's essentially math and big data crunching. I have no interest to pour years into statistics, I care about the end result

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20:21 <baweaver> I'm in the nice little niche that just happens to grok statistics naturally. Really I don't think it'd take years though

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20:29 <eam> I have a passion for serving ads

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20:29 <frem> I have a stupid bash-related question. Why does ruby not see my env variable unless I put it on the same line as the ruby command? https://gist.github.com/jamesgecko/1ac246457220d16879de

20:29 <agarie> when you run a Ruby program, it creates a new process

20:30 <agarie> if you put the env var in that line, the spawned process will be able to access it

20:31 <frem> Is there a way to access env vars from ruby without putting them in the same line as the command?

20:31 <eam> frem: FOO=bar isn't an environment variable

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20:31 <eam> export FOO puts the bash variable foo into the environment

20:31 <eam> export FOO=bar # env var FOO

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20:32 <eam> otherwise FOO=bar is just a bash language variable

20:32 <eam> bash overlaps environment and local interpreter variables in the same namespace without clearly distinguishing between them

20:32 elaptics_away is now known as elaptics

20:32 <frem> Ah, like `set -x` in fish.

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20:32 <frem> That makes sense. Thanks!

20:33 <eam> FOO=bar some_command doesn't set a local bash variable OR set an environment variable in the current process -- rather it sets it in the environment of the child only

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20:40 <bline79> let's say I have a list of names, how do I repeatedly put that list of names infinitely? names = [ "Fred", "Bob", "Jim" ] for example.

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20:41 <Radar> bline79: while true

20:41 <Radar> bline79: I think you might be able to figure out the rest :)

20:41 <Radar> You could also use loop do

20:41 <bradland> this reminds me of fizzbuzz

20:41 <canton7> bline79, #cycle

20:41 <bradland> use the modulus, luke!

20:41 <ytti> loop { puts names.rotate![0] }

20:41 <canton7> >> [1, 2, 3].cycle.take(10)

20:41 <eval-in_> canton7 => [1, 2, 3, 1, 2, 3, 1, 2, 3, 1] (https://eval.in/307126)

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20:43 <ytti> rotate probably will be quite expensive for non-trivial size

20:43 <jhass> names.cycle(&method(:puts))

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20:55 <bline79> thank you guys :)

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21:03 <bline79> so, let's say I want to print 10 total names?

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21:03 <Radar> bline79: look at canton7's eaxmple

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21:09 <colorados> is big difference between [1,2,3]*4 and cycle? in perfomance

21:09 <colorados> which is fast and efficient

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21:10 <wallerdev> cycle creates an enumerator

21:10 <wallerdev> so it wont calculate it all out immediately

21:11 <wallerdev> *4 will immediately create an array 4 times as big

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21:22 <gr33n7007h> cycle time: 0.000300 *5: 0.000266

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21:29 <colorados> 1.448100374545902e-05

21:29 <colorados> 2.9480012017302215e-05

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21:30 <colorados> Benchmark.realtime { ([1,2,3,4]*100).take(200)}

21:30 <colorados> Benchmark.realtime { [1,2,3,4].cycle.take(200)}

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21:31 <apeiros> realtime is a bad measure

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21:31 <apeiros> your computer does a lot more than execute your ruby code

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21:32 <apeiros> and that all ends up in realtime too

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21:33 <colorados> and measure?

21:33 <apeiros> measure gives you multiple times, one of them being CPU time, which for this measure is relevant

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21:35 <colorados> what is best method to measure

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21:36 <apeiros> for CPU bound stuff, probably benchmark/ips

21:37 <colorados> 0.000039

21:37 <colorados> 0.000172

21:38 <colorados> for [1,2,3,4].cycle.take(2000)

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21:38 <colorados> 4 times faster mul array

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21:43 <_1_jordan> hola ruby

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21:47 <coventry`> Is there a way to tell a ruby script to fail if it hits an unrecognized variable, like $xmplath when I mean $xmlpath?

21:47 <GaryOak_> coventry`: you can raise an error

21:48 <apeiros> coventry`: don't use globals. local variables raise automatically.

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21:48 <coventry`> Ah, thanks.

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21:49 <GaryOak_> My answers are always a little too vague

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22:22 <bradland> any comments on the maturity/preparedness of shoes4 for simple apps?

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22:22 <bradland> i want/need to wrap a command line tool or two for some new users who are _compeltely_ lost on the command line

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22:25 <jhass> the actual UI from what I've seen looks too unpolished for me, which is why I never really investigated it

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22:25 <bradland> yeah, it's pretty soft there.

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22:25 <bradland> i'm going to end up with a file browser and a few checkboxes with a "run" button

22:25 <bradland> bleh

22:25 <jhass> I yet have to play with them, but the ruby-gir bindings look pretty solid

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22:25 <bradland> may just go with a curses app! ha

22:26 <jhass> and actually recent tk stuff doesn't look too bad either if you apply the right tricks

22:26 <Delsol> Stupid question. Activerecord is repeating the same exact sql queries dozens of times sometimes. Any way to make it less retarded? Or is it most likely retarded code?

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22:26 <jhass> Delsol: the later tbh

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22:26 <jhass> missing .includes or so

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22:27 <bradland> Delsol: AR referrs to this as eager loading associations.

22:27 <nobitanobi> Can group_by be used with two fields?

22:27 <nobitanobi> two attributes.

22:27 <bradland> Delsol: http://guides.rubyonrails.org/active_record_querying.html#eager-loading-associations

22:28 <Delsol> So if Im loading like sale.employee.fullname for each sale..... It does a select * from employees where ID = 7 for example, for each sale in a list....

22:28 <bradland> look for the assignment to sale

22:28 <bradland> it should be some kind of Sale.where(foo)

22:28 <bradland> or something

22:29 <bradland> have a look at the link I posted for eager loading associations

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22:29 <bradland> nobitanobi: you'll have to be more specific. are you referring to Enumerable#group_by?

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22:31 <bradland> Enumerable#group_by groups by the result of the block passed to it, so if you are passing in an object, you can assemble a string key, as if you were building a cache key.

22:31 <Delsol> one possible solution I had was to load all the employees, shove all that crap in an array.... Then look it up in memory from the array... But that's extra code to write, etc.... Multiply by a zillion different things equals project never gets finished....

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22:31 <bradland> nobitanobi: foo.group_by { |i| "#{i.bar}-#{i.baz}" }

22:31 <Delsol> But your saying I can just include all the stuff I need, grab it once, no major extra code?

22:31 <bradland> Delsol: dude

22:32 <bradland> have you even looked at the link I posted?

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22:32 <bradland> eager

22:32 <bradland> loading

22:32 <bradland> associations

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22:32 <bradland> it's less than two pages of docs

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22:33 <Delsol> Yeah... I looked at it... Just confirming, that's going to solve my issues?

22:33 <bradland> Yes. It will solve your issue.

22:33 <bradland> The queries you're seeing are called N + 1 queries

22:33 <Delsol> Badass.

22:33 <bradland> understanding why is important though

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22:34 <bradland> there must be a relationship between sales and employees

22:34 <bradland> when you call sale.employee, you're telling activerecord to follow that association

22:34 <bradland> so it triggers a query

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22:34 <bradland> your idea with the array where you stuff the data from before?

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22:34 <bradland> that's kind of what includes does, only smarter

22:34 <bradland> it tells activerecord to query the relation at the time the main query is executed

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22:35 <bradland> that way it any time it encounters sale.employee.fullname (or whatever), the employee data is *eager loaded*

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22:36 <jhass> was *already* eagerly loaded

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22:36 <bradland> those who do not understand ActiveRecord are doomed to abuse it

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22:37 <jhass> you mean the average rails user :P

22:37 <bradland> haha

22:37 <wallerdev> what do you guys think of python

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22:38 <jhass> wallerdev: we think you want to troll

22:38 <jhass> :P

22:38 <wallerdev> i'm no troll :p

22:38 <wallerdev> might end up having to use it soon

22:38 <bradland> python is great

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22:38 <bradland> get used to callbacks in many cases instead of blocks

22:38 <wallerdev> i've dabbed a bit in it and it seems like ruby but worse

22:38 <bradland> lol

22:39 <wallerdev> does it have anonymous callback methods?

22:39 <Delsol> im not the main developer, I'm a php guy normally... Write my own sql, etc.... In this instance, I'm finding bugs, usability issues, etc... And trying to make it usable on less than 3.2ghz hardware....

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22:40 <agarie> that's ok Delsol

22:40 <agarie> the link bradland sent you (RailsGuides) is a wonderful way to gain familiarity with the various parts of Rails

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22:41 <bradland> wallerdev: it has lambda functions

22:41 <bradland> i've not used it enough to compare it to blocks though

22:41 <bradland> i'm kind of head over heels for ruby

22:41 <Delsol> In my opinion, gtk drawing an array of text boxes and checkboxes should be the slow part... Not mysql and activerecord.... Five hundred rows shouldn't take 90 bloody freaking seconds, heh.

22:42 <bradland> agree 100%

22:42 <bradland> sounds like someone really screwed the pooch on that app

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22:42 <agarie> there are lambdas, but most pythonists I know (my last job was in a Python shop) hate them and prefer to write a method and simply use its name

22:43 <wallerdev> yeah

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22:43 <wallerdev> thats kind of what ive heard too

22:43 <agarie> There are two things that I *really* like in Python: its module system and the list comprehension syntax

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22:43 <wallerdev> i find list comprehensions hard to read :|

22:43 <bradland> Delsol: if you're familiar with SQL, you'll find ActiveRecord's .to_sql method useful

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22:44 <bradland> anywhere you see an assignment from an ActiveRecord model, you can drop that code in to a Rails console and add .to_sql to the end

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22:44 <bradland> and see what kind of SQL it would generate

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22:44 <agarie> you'd be in trouble reading my last job's codebase, wallerdev

22:44 <wallerdev> haha

22:45 <wallerdev> i might end up doing php to python conversion :|

22:45 <agarie> oh god

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22:45 <wallerdev> moving to a lesser evil lol

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22:45 <bradland> Delsol: most ActiveRecord performance issues are related to failure to generate indexes, and poorly formed ActiveRecord queries

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22:45 <jhass> wallerdev: my experience with list comprehensions is that if you're new to python they're hard to read, then they become easy and if you stop doing python for a while they become hard again

22:45 <jhass> super useful comment, I know

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22:45 <wallerdev> haha :)

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22:46 <agarie> I started reading comprehensions like a mix of #map and #select :P

22:46 <jhass> what I wanted to say there's a click moment to them, like with rubys blocks perhaps

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22:47 <agarie> yeah, I felt the same, jhass

22:47 <agarie> it gets really natural after you've done it for a while

22:48 <wallerdev> gotcha

22:48 <wallerdev> well

22:48 <wallerdev> i'll keep you guys updated

22:48 <wallerdev> :p

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22:52 <bradland> oh man, this guy

22:52 <bradland> hilarious

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22:52 <bradland> says overclocking his server made performance tolerable

22:52 <rager> lol

22:53 <rager> I'll believe it

22:53 <bradland> scary part is, someone is paying for this

22:53 <rager> and by that... I mean that now that he thinks his server is faster due to overclocking, he can tolerate it melting itself into a pool of slag by next tuesday

22:53 <wallerdev> o.o

22:54 <wallerdev> if your server is under enough load to necessitate overclocking you probably need another server lol

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22:54 <rager> if your server is under enough load that you think that overclocking could help, you're probably not going to own that server for very long after you overclock it

22:54 <wallerdev> :p

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23:07 <rim-k> hello*

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23:08 <jhass> hi

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23:09 <rim-k> I have a quick question

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23:09 <rim-k> say I ran "bundle install --without xxxx yyyy zzzz"

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23:10 <rim-k> and I want to start from scratch

23:10 <rim-k> i.e. regenerate my GemFile

23:10 <jhass> rm .bundle/config

23:10 <rim-k> oh ok

23:10 <jhass> you don't generate the Gemfile, you write it

23:10 <rim-k> that easy? :)

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23:10 <rim-k> I mean the GemFile.lock

23:10 <rim-k> is that the same?

23:10 <jhass> well, that you could just delete too, but what's your actual issue?

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23:19 <Radar> rim-k: Gemfile.lock is generated by Bundler.

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23:33 <a5i> What do you Rubyists think of Crystal?

23:33 <Lewix> a5i: what's Crystal?

23:34 <a5i> Lewix: http://crystal-lang.org

23:34 <a5i> Basically Compiled Ruby

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23:37 <a5i> Ruby syntax with the efficiency of C

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23:39 <Lewix> no freaking way a5i

23:39 <Lewix> I'll check it out now

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23:40 <a5i> Lewix: yes freaking way, if you have any questions, feel free to ask @ #crystal-lang

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