<banisterfiend>
and you have a local variable that shadows the var you're iterating over
* csmrfx
is still trying to figure out what it is "inject({})" is supposed to achieve
<banisterfiend>
it'll still work, but it's unnecessarily confusing
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<zenspider>
csmrfx: bad code is bad
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<csmrfx>
it's like dwarves turning into questionmarks in DF when confused
<banisterfiend>
csmrfx the initial value of teh accumulator
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<csmrfx>
ah, silly me, there it is in the docs, "initial"
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<zenspider>
this code is in github, stackoverflow, various gists... it's all over
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<zenspider>
basically translating to: this company isn't even trying
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<csmrfx>
so what the h is the backslash then?
<csmrfx>
mmnnasd
<csmrfx>
oops, it only locks up my irb or term
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<zenspider>
again, bad code is bad
<csmrfx>
ah, nevermind, I was reading it to be a method, silly me
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<dhardison>
you
<dhardison>
you're right
<csmrfx>
zzZ
<dhardison>
lol
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<eam>
here's an idea, why not use the rdoc block as the method name itself. self-documenting code and when the documented interface changes the method changes too
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<benzrf>
>inject
<benzrf>
>not foldl
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<zenspider>
eam: so my method name should be "##\n# blah calculates the thing and returns the stuff" ?
<eam>
>> define_method "# this method does things\n# and other things", Proc.new { puts "the method" }; send :"# this method does things\n# and other things"
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<ionelmc>
centrx: so how can you make more that one class use the same metaclass?
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<centrx>
ionelmc, go to a swingers bar
<ionelmc>
The examples on that article don't explicitly specify the metaclass, but patch it through a normal class
<zenspider>
ionelmc: what is a metaclass in your mind?
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<ionelmc>
Something like in Python
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<ionelmc>
I'll be honest , I don't know much ruby, but I'm curious if you can do what you can do in Python
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<zenspider>
"something like in python" == nonsense
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<ionelmc>
Very possible :-)
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<centrx>
ionelmc, Ruby is generally more expressive than Python, and of course they are both Turing-complete so they can do all the same things fundamentally
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<volty>
haskell is yet more expressive, but pity that you get lost in expressing, in all that expressiveness :)
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<benzrf>
ionelmc: the thing is that most of the metaprogramming you do with metaclasses in python can be accomplished without them in ruby
<benzrf>
iirc
<benzrf>
ionelmc: however, ruby does not have any special language support for metaclasses
<benzrf>
er, *and*
<benzrf>
you CAN subclass Class, nothing stops you from doing that
<benzrf>
and you can call .new on the subclass
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<shevy>
ionelmc what does a metaclass do in python?
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<benzrf>
shevy: it is a class's class
<benzrf>
DUH!
<shevy>
eh?
<benzrf>
well, what else would it be
<benzrf>
?
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<shevy>
I don't even know what a class's class would be
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<bentanweihao>
ohai!
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<jxf>
I have two UTC Times, and I'd like to get all the UTC Times that are between them which occur at some interval (e.g. every 15 minutes past the hour). I'm a little stumped about how to do that in a general way. Any suggestions?
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<jxf>
er, not every 15 minutes past the hour, but rather every 15 minutes each hour (e.g. :15, :30, :45, :00, etc.)
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<jxf>
so if the times were, e.g. `Nov 1 2014 @ 11:46` and `Nov 1 2014 @ 12:33`, I'd get 11/1 @ 11:46, 11/1 @ 12:00, 11/1 @ 12:15, 11/1 @ 12:30, 11/1 @ 12:33.
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<havenwood>
>> Time.now.to_i.step(by: 60 * 15, to: Time.now.to_i + 5400).map { |n| Time.at n }
<jxf>
havenwood: that's almost right, but I want the intermediate times to "line up" on the boundaries (e.g. note that the last two times are 12:30 and then 12:33)
<jxf>
havenwood: ah, cool, I'll take a look! thanks for the heads-up
<jxf>
I think I almost want some kind of "modulo Time" operation
<jxf>
but I'm not sure what that would be called or if it even exists
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<shevy>
who else here is using KDE konsole
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<msx>
shevy: o/ me
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<shevy>
yay!
<shevy>
I am not alone
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<msx>
shevy: :) I swtiched to it back from urxvt
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<msx>
the compromise between features and weight wasn't worth
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<shevy>
hehe
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<shevy>
kde konsole is just about the only KDE app I use regularly
<shevy>
a while ago someone else here pointed out that you can use at least 256 colours on KDE konsole
<shevy>
I forgot who it was :(
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<msx>
not to mention colors look beautiful in konsole (and i'm a heavy terminal user). Regardless of that, while I do not use the full KDE DE - just herbstluftwm, which happens to be the best manual tiling WM of all times :D - I do use most of KDE apps so... you figure it :)
<shevy>
lol
<shevy>
that name cracked me up
<shevy>
herbstluftwm
<msx>
"autumm air" in Deutsch
<sevenseacat>
i find kde ugly
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<msx>
or more likely "autumm breeze"?
<shevy>
yeah
<shevy>
sevenseacat aren't you a mac cat?
<msx>
shevy: konsole rocks
<sevenseacat>
nein
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<msx>
lightweight, feature packaged, what more could one else? Even tmux runs admirably fast on it
<shevy>
msx there was some programmer from vienna a long time ago, he created the "Mailüfterl" ... like "may breeze" or something... breeze in the month May http://en.wikipedia.org/wiki/Mail%C3%BCfterl bei Hans Zemanek in 1956
<msx>
sevenseacat: you mean GNOME, Xfce and all those? KDE is just beautiful albeit I agree not as vanilla
<msx>
O_O
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<sevenseacat>
well all i said was kde is ugly, im not much of a fan of the alternatives either
<sevenseacat>
i use unity
<shevy>
ack
<shevy>
you are a wicked cat
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<msx>
lol
<msx>
i actually like Unity
* msx
steps back...
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<sevenseacat>
i dont particularly like it, but im used to it
<msx>
shevy: nice article, and the idea of "Viennese May Breeze" is just beautiful
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<shevy>
hehe
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<shevy>
actually he only called it "Mailüfterl" I think ...
<shevy>
I guess I have to try out herbstluftwm
<shevy>
just for the name alone... which is a better name than awesomewm
<msx>
i settled with it after trying various WM, most of them dynamic tiling
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<shevy>
I don't really know how to use a tiling WM
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<msx>
hlwm - short for herbstluftwm - has this absolutely useful ideas of frames which I believe is way ahead of traditional dynamic tiling WM. I would love to see Notion's 'tabs' idea added
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<msx>
shevy: time and little patience to learn their ways, i dind't too at first but now i can't get back to traditional desktops
<msx>
shevy: do you use tmux?
<shevy>
nope
<msx>
or GNU Screen? It's basically the same concept
<shevy>
tmux also confuses me
<shevy>
nope, neither
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<shevy>
it completely confuses the heck out of me
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<shevy>
it's why I use kde konsole, I simply have tabs open
<msx>
oh... may be WM are not for you them :S
<shevy>
I am on fluxbox right now
<msx>
ah well, minimalist your way :D
<msx>
hell, this gem update will fry my laptop xD
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<orangerobot>
hi there. I've developed a gem that uses rspec and other stuff for testing. Is there a way to force ruby to download the development dependencies to the user's machine as well when running 'gem install <mygem>' ?
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<orangerobot>
in other words, I would like to know whether there's a command that will download a gem, its dependencies (this is already done by default) but also its development dependencies
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<hanmac1>
orangerobot: when you do "gem install" add "--development" too, that will download the development stuff
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<hanmac1>
shevy: look, i am there twice ;P
<orangerobot>
hanmac1: ok i will test it out now.
<orangerobot>
hanmac1: so if i've added dev deps to my gem (via spec.add_development_dependency in my gemspec) then they should be should be downloaded as well, right
<hanmac1>
yes
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<orangerobot>
ok thank you hanmac1
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<hanmac1>
hm i think i should add rspec testing stuff later to my gems too
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<teotwaki>
Hi, I'm using rspec to run some behaviour tests against my API based on Grape. I use Rack::Test::Methods, which works fine, however, I'm running into some performance issues: If I run the suite on my models (which actually hits the DB), ~40 tests will execute in roughly 0.14 seconds. If I run the API suite, ~30 tests run in 30 seconds. The first 10 or so tests are fast, things go very much downhill after those.
<teotwaki>
How would I go about analysing/understanding this issue?
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<hanmac1>
teotwaki: hm you might try to ask the question again at #rspec where you might get more help (but say that you asked in this channel before)
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<HewloThere>
Hey guys! Would it be best to make this in Ruby or another language? What I'd like to do is make a website with a few, limited people, logins, with the ability for them to upload images and have albums, as well as for selected albums, have passwords?
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<teotwaki>
hanmac1: sure, that works.
<teotwaki>
hanmac1: ta
<shevy>
HewloThere I guess you want ruby on rails -> #rubyonrails
<HewloThere>
I thought Ruby was also a web language?
<shevy>
HewloThere in general it depends on what other language you want to use. php? :)
<HewloThere>
Sorry though.
<shevy>
ruby is general purpose
<HewloThere>
Oh...
<hanmac1>
HewloThere: you can use Ruby for nearly anything
<shevy>
you can use ruby in .cgi scripts too, like perl
<shevy>
then there is sinatra... rack... and so forth
<hanmac1>
rails is only one of possible webframeworks in ruby
<HewloThere>
I see... What language would you suggest? (Presuming you need to learn it)
<shevy>
ruby ;)
<HewloThere>
Can Ruby be used with websites?
<shevy>
ruby on rails uses ruby
<hanmac1>
with the right libs/gems yes
<HewloThere>
I see... So with ROR?
<shevy>
yeah
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<HewloThere>
=D Thx. =)
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<HewloThere>
Can Ruby/ROR be used with extensive CSS, div's, etc?
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<teotwaki>
HewloThere: what webframework wouldn't be able to do so?
<HewloThere>
I've got no idea.
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<shevy>
HewloThere I think your question makes no sense
<HewloThere>
< teotwaki > Would you suggest someone who knows nothing about Ruby to learn it on codecademy or somewhere else...?
<shevy>
when you basically generate html, you have the instructions towards .css files, or embed them directly
<bulters>
HewloThere: It all comes down to string concatenation, so you can basically concatenate the hell out of any div you want, css all the things and forget anything "frameworky"
<HewloThere>
I was having a mind blank.
<shevy>
and the moment you generate html, you get ALL of the html features
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<shevy>
which will include CSS normally just as well. And you can then apply all CSS rules and styling towards the tags + ids
<hanmac1>
one day i will make a website with C just because i can ;P
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<shevy>
there is usually that http meta tag or whatever was the name that specifies what reply the webserver shall give to the visitor
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<HewloThere>
Mmkay. Thx. =)
<HewloThere>
Getting back to my other question, would you suggest someone who knows nothing about Ruby to learn it on codecademy or somewhere else...?
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<shevy>
somewhere else
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<shevy>
do you use linux
<HewloThere>
Such as?
<shevy>
the commandline
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<shevy>
:)
<HewloThere>
My PC isn't Linux, but I've got a VPS/
<HewloThere>
. *
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<shevy>
awww :(
<HewloThere>
On CentOS.
<HewloThere>
=P
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<HewloThere>
Why?
<shevy>
you need to put your brain into working + thinking mode
<shevy>
and that means you have to write code
<HewloThere>
Mmm...
<bulters>
shevy: ouch! It's not even mid-day here!
<HewloThere>
shevy: Where did you learn Ruby?
<shevy>
bulters well it won't work, he is using windows :(
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<shevy>
HewloThere well that is not good to compare, I learned perl before
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<HewloThere>
Are they similar?
<shevy>
the philosophy is
<shevy>
the syntax not so much
<HewloThere>
Right...
<shevy>
but if you reaaaaally start from zero
<shevy>
use php
<shevy>
you'll switch to a better language lateron anyway
<shevy>
I went perl->php->ruby
<HewloThere>
I see... Is PHP and Ruby similar?
<shevy>
nah
<HewloThere>
Oh.
<HewloThere>
Time to start PHP!
<shevy>
ruby has a conceptual design, PHP is a melting bot of whoever is able to throw in code
<HewloThere>
Lol.
<shevy>
melting *pot
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<hanmac1>
HewloThere: for CentOS i just can say that you totally need to update your software like ruby or php because the centos stuff is totally outdated
<HewloThere>
CentOS 7?
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<hanmac1>
hm ok that night to be newer ... so it might be ok for once
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<HewloThere>
=P I installed PHP about half hour ago.
<HewloThere>
I don't think there's been an update since then.
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<gregf_>
shevy: how would you reverse a number in perl :p
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<gregf_>
*without googling*
<hanmac1>
gregf_: you mean like 23 to 32 ?
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<gregf_>
heh, i was expecting shevy to answer, since he's worked on it :)
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<shevy>
gregf_ I last touched perl code like 10 years ago or so
<shevy>
agent_white HewloThere is undecided which language he should learn
<shevy>
crome cat abuser!
<crome>
nah, they like it
<agent_white>
HewloThere: Ruby is like silly putty. Who doesn't like playing with silly-putty?!
<HewloThere>
I have got no idea.
<crome>
I'm always surprised how much I don't like going to work after drinking
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<HewloThere>
Is JS any good to learn?
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<crome>
that's a pretty silly question
<HewloThere>
Okay, let me re word that. Is JS any good to learn to make things look pretty?
<crome>
if you have to do something that is best done in JS, by all means, learn it
<agent_white>
HewloThere: Every language is good to learn. Majority are free to try. Why not try them instead of asking?
<HewloThere>
I guess.
<crome>
HewloThere: define pretty
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<agent_white>
Until then you're just picking from the pool of opinions. The fellows here like Ruby. And you are here. How bout you try Ruby?
<crome>
do you mean it is useful to learn JS if you want to make kickass webapps?
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<maasha>
Morn
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<gregf_>
HewloThere: JQuery(rather than JS) does'nt make things pretty. its the CSS with the html and images :/
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<gregf_>
JS does the clever bit tho' :/
* hanmac1
likes websites that does "work" even with disabled JS
<maasha>
I would like to write some HTML pages using HAML in a non-Rails app - basically using HTML instead of ERB. Search the docs and google seems to only turn up Rails this and Rails that. So what is the HAML equivalent of html = ERB.new(template) ?
<crome>
hanmac1: no drag and drop? :(
<HewloThere>
gregf_ this is a pretty website: No, it's useful to learn JS to make things like this:
<HewloThere>
I mean ghost.org
<HewloThere>
KIK!
<HewloThere>
LOL! *
<hanmac1>
crome: if javascript is disabled then its nice if the website does find an alternate way to work
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<agent_white>
HewloThere: So have you started your ruby program yet? :)
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<HewloThere>
I've gotta learn JS first. Then it's time for Ruby.
<HewloThere>
I need to make pretty things in JS.
<maasha>
crome: ah, excellent. Google-foo++ to you :o)
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<crome>
maasha: just to help you in the future: the keywords I used for finding stuff about using haml without rails is: "haml without rails"
<crome>
using search engines should be taught in elementary school
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<maasha>
crome: there was no internet back then :o(
<crome>
well, they still don't teach it
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<maasha>
I remember when alta-vista was hot.
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<gregf_>
haha, what goes around comes around ;)
<crome>
metagopher was the thing
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<maasha>
crome: yeah, gopher rings a bell too
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<crome>
I never got to use usenet though
<shevy>
you simply were not l33t enough
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<crome>
alright, werk
<crome>
bbl
<hanmac1>
usenet still exist? oO
<hanmac1>
i thought it already died +5 years ago
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<maasha>
hanmac1: they keep it around because of Godwin's Law
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<maasha>
and I read somewhere that the Netscape browser will be revived
<msx>
guys, could anyone explain me in a few words why it takes so much time to parse gems' documentation? a gem update has been running for more than an hour and still going
<shevy>
msx sounds more like a bug
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<msx>
shevy: :P
<msx>
ty
<msx>
Ctrl+C
<shevy>
what gem was it?
<msx>
to the rescue. Second time I hit this bug
<shevy>
It's been a while since I hit that
<shevy>
I usually install only one gem though
<shevy>
and put it into my local storage
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<hanmac1>
msx did the output say "building native extensions, that will take a while" or something similar?
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<HewloThere>
Is anyone here any good with JS?
<msx>
hanmac1: hello, double-checked and not, it doesn't says so anywhere
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<wasamasa>
HewloThere: this is #ruby, how can anyone here be any good with JS?
<HewloThere>
I know it's #ruby. No one on JS is helping me at all. No one even read it after waiting like 10 minutes and posting it several times.
<wasamasa>
wait longer
<HewloThere>
=/
<wasamasa>
also, asking for help doesn't guarantee getting any
<sevenseacat>
spamming wont get you more help
<agent_white>
Or learn ruby instead!!! :D
<wasamasa>
this is just a volunteer thing
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<wasamasa>
if nobody bothers responding, chances are nobody capable of answering has seen it
<teotwaki>
"I tried to buy a Renault in a Renault shop, but there were no salesmen available, so I came into this Ford shop. Why won't you sell me a Renault?!"
<teotwaki>
The number of (mainly PHP) devs in my company who can look at that article and say "he's nit-picking"
<sevenseacat>
ruby doesnt require html and css. what are you talking about?
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<wasamasa>
sevenseacat: things he doesn't know about
<HewloThere>
For web...
<sevenseacat>
apparently so
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<wasamasa>
HewloThere: web development is a very broad field
<HewloThere>
I'm aware of that.
<hanmac1>
HewloThere: depends on the implmentation ruby does use C or Java but you dont need to know C or java to do ruby
<wasamasa>
HewloThere: if you're just starting out, I'd suggest writing simple command line applications instead
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<HewloThere>
=/
<msx>
HewloThere: just try by yourself. I always knew I absolutely like Ruby but started learning Python because a lot of system tools are written with it. Now I have to learn Chef and Puppet and have little time for anything else I'm forced to come back to my roots, couldn't be happier
<wasamasa>
patience would help, too
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<HewloThere>
Mmm...
<teotwaki>
I love ruby, but I have to say I much prefer Twisted over EventMachine when it comes to event-driven programming.
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<HewloThere>
I just don't know what to learn. Everyone says something different.
<wasamasa>
choose one and stick with it
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<msx>
^ ^
<wasamasa>
do it long enough to actually get a feel what it's god and not so good for
<HewloThere>
There's advantages and disadvantages of each. I'd prefer to know USEFUL ones, not crap ones.
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<wasamasa>
maybe learn another language to expand your horizon
<wasamasa>
after you've done this with like, three completely different languages, learning new ones as you need them becomes easier
<teotwaki>
learn one language a year
<HewloThere>
I guess.
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<teotwaki>
HewloThere: whatever you do, don't assume you're good.
<sevenseacat>
this is why i like having a formal education, to get the basics down and make picking up new stuff a lot easier
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<HewloThere>
I'm not assuming I'm good.
<wasamasa>
and if you plan to do that to become a paid software developer, you'll need to learn languages, frameworks, working in a team, ...
<wasamasa>
constantly
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<sevenseacat>
yep
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<teotwaki>
HewloThere: you suck at development. Your code will be absolute shite. Ask people for input, learn how to explain the architecture you're imagining.
<wasamasa>
I used to be a python fanboy and could write it well enough to solve pretty much any problem
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<hanmac1>
i learned Haxe recently for a new job ... its also a confusing language
<wasamasa>
but since I've started interning at my current company, I picked up ruby
<HewloThere>
I'm only 14. I'd like to get a pretty decent knowledge of web languages by the time I finish college (~3.5 years).
<wasamasa>
that made me cut down on fanboying :P
<teotwaki>
HewloThere: stop with the focus on web
<wasamasa>
HewloThere: there is no such thing as a "web language"
<teotwaki>
HewloThere: web developers are a dime a dozen
<wasamasa>
HewloThere: you use what works out for you
<HewloThere>
...
<apeiros>
wasamasa: I think JS and PHP qualify
<teotwaki>
apeiros: really? Node.js doesn't seem restricted to the web
<wasamasa>
HewloThere: if every browser you target runs JS client-side and you need to do client-side things, guess what, you learn JS
<apeiros>
since, yes, you can do other stuff with JS and PHP, but realistically, 99%+ of JS/PHP code is web
<apeiros>
teotwaki: and how much non-web node.js have you seen? :)
<agent_white>
I learned ruby to write tests for my devs when I was a network tech. Then I left and took ruby with me :D
<teotwaki>
apeiros: I disagree, we have 30k SLOC of Node in the backend, barely 10k on the client.
<wasamasa>
HewloThere: but for the backend any language does that has http bindings
<msx>
agent_white: yeah but that's changing fast
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<HewloThere>
I'd like to have good knowledge of HTML and CSS (already know), JS, Ruby, PHP, Python, Node.js, jQuery and probably a few others.
<apeiros>
teotwaki: back-end for what? let me guess - web
<wasamasa>
HewloThere: and pretty much everything beats the php/jsp/asp/... crap
<HewloThere>
Mmm...
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<teotwaki>
apeiros: nope, VoIP event processing.
<sevenseacat>
HewloThere: yeah good luck with that
<gbchaosmaster>
HewloThere: If you want to get into web development, learn JS next.
<teotwaki>
apeiros: it's a backend to our SBCs.
<apeiros>
teotwaki: ok then. so 30k SLOC vs. the billions of existing.
<gbchaosmaster>
You're gonna wanna know all of the client-side shit.
<HewloThere>
Before or after Ruby...?
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<apeiros>
you're pretty much the exception in that case.
<sevenseacat>
you're going to need more than that for web dev, you're going to want SQL and everything that entails as well
<HewloThere>
Huh?
<teotwaki>
apeiros: I know, I'm special :)
<agent_white>
30k SLOC... I have trouble poking through stuff I wrote ~400.
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<agent_white>
o_o
<wasamasa>
agent_white: write better :P
<teotwaki>
agent_white: the C++ part is 350k SLOC
<agent_white>
;D
<gbchaosmaster>
You would use Ruby for server-side code. The languages serve entirely different purposes.
<agent_white>
Lord.
<apeiros>
agent_white: proper segregation of concerns helps a lot
<gbchaosmaster>
Not that you can't run server-side JS.
<apeiros>
agent_white: lego code ;-)
<teotwaki>
agent_white: the Python/Twisted part is 50k
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<gbchaosmaster>
Don't even bother learning PHP, the less people that know PHP the quicker it'll die.
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<wasamasa>
gbchaosmaster: after facebook dies maybe
<teotwaki>
actually, look at PHP after you've looked at a few languages that are coherent
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<teotwaki>
if you start with PHP, it'll take a lot of effort to excusing any mistake a language makes
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<teotwaki>
s/to/to stop/
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<gbchaosmaster>
I thought PHP was really cool when I first learned it and started to play around with it as a preprocessor
<gbchaosmaster>
Then I saw what happened as soon as things got even a little bit big.
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<teotwaki>
The horror with PHP is how punishing it is to use for the dev
* wasamasa
suspect ##js ignored HewloThere because explaining him what went wrong would solve the exercise immediately
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<HewloThere>
wasamasa, what?
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<teotwaki>
And as if hit by Stockholm Syndrome, the devs keep asking for more and even protecting/defending their torturer
<wasamasa>
HewloThere: yes, that codecademy exercise
<HewloThere>
=P
<gbchaosmaster>
Stockholm Syndrome is all too common in the programming world.
<hanmac1>
hm my biggest stuff i have is 18kLOC ...
<gbchaosmaster>
*cough*Java*coughcoughvomit*
<wasamasa>
HewloThere: if you can not figure out what's missing there, there's a lot more basic things to worry about than what you should learn to become a web developer
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<teotwaki>
then again, he's only 14, he has time
<HewloThere>
I know. I'm just dumb.
<gbchaosmaster>
wasamasa: Oh god now I wanna see the problem
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<teotwaki>
but yeah, you won't be the next Zuckerberg, if that's why you were getting into development.
<HewloThere>
Is it possible to put .length and .downcase for the same string?
<csmrfx>
dont sweat the small stuff
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<csmrfx>
ueah
<HewloThere>
=P
<HewloThere>
How would you do that?
<csmrfx>
you can chain in ruby
<HewloThere>
I see...
<gregf_>
length would give you a number and case does not matter :/
<csmrfx>
if you look under the hood a little
<csmrfx>
you will realize each expression calls a method
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<csmrfx>
and those methods return a value
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<csmrfx>
which the next one in chain picks up
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<HewloThere>
Mmm...
<csmrfx>
try it in irb
<csmrfx>
first each as standalone
<csmrfx>
then chain them
<HewloThere>
I'll just follow this tutorial for a bit longer... =P
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<csmrfx>
ok it probably has the same jive
<HewloThere>
When making a (I think) variable (e.g. name) do you have to write it as "name = myname" or can you do "name=myname"?
<agent_white>
Try it and see?
<hanmac1>
HewloThere: hmmm downcase/upcase does not change the length of a string ...
<HewloThere>
hanmac1, I'm aware of that. I was just wondering how to do multiple for 1 string...
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<HewloThere>
To have Ruby on a website, do you need to install anythign?
<HewloThere>
anything *
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<hanmac1>
HewloThere: for "something <Operator> other" you need to look at "a - 1" and "a-1" vs "a -1" ... the last one is parsed as "a(-1)" ... so you need a bit careful when using spaces with operators ...
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<HewloThere>
Mmkay. Thanks.
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<gizmore>
HewloThere: There are multiple options to let ruby talk http
<HewloThere>
Such as?
<csmrfx>
I think you need more practice/homework on as what "ruby on a website" would mean, technically
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<HewloThere>
As in, having a web page built using Ruby on a web server.
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<csmrfx>
ok, a ruby web application
<HewloThere>
What would I need to install for my server to display it?
<csmrfx>
consider it as a app server + web server (+possibly caching proxy)
<wasamasa>
HewloThere: visit the ip address and bam, you got a file listing
<wasamasa>
HewloThere: that's all it takes
<gizmore>
`nc -L 80 < yourpage.html`
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<wasamasa>
^ more unixy
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<HewloThere>
How to quit the Python command line?
<tobiasvl>
^d
<tobiasvl>
why are we talking about python in #ruby
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<tobiasvl>
HewloThere: ^d
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<wasamasa>
tobiasvl: because I can never remember the ruby equivalent oneliner
<tobiasvl>
hehe
<wasamasa>
it barely fits under the twitter maximum length
<HewloThere>
Is there any packages I need? I've got Apache, PHP, is there anything else I need?
<wasamasa>
...
<tobiasvl>
HewloThere: need for what?
<HewloThere>
To use Ruby on a web page...
<tobiasvl>
to use ruby on a web page?
<HewloThere>
Yes.
<tobiasvl>
well you need … ruby
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<tobiasvl>
you don't need php
<wasamasa>
HewloThere: doesn't sound like you grasp the basics yet :P
<HewloThere>
=/
<wasamasa>
HewloThere: as I've said earlier, all you need is some server (which is just a computer, far, far away) and a language with socket bindings
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<wasamasa>
HewloThere: that's all it takes
<Lightsword>
I’m trying to write a socket client using something like eventmachine, I need to make many socket connections at once, are there any examples of how to do that? I managed to do something similar using em-http-request but I need to use unix sockets instead
<HewloThere>
With a .rb file, do I need to install anything on my VPS for it to output that properly?
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<godd2>
and then add the sleep rand thing if that works at all to see if its working asynch
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<Lightsword>
godd2, gettin undefined method `FiberIterator' for EventMachine::Synchrony:Module
<Lightsword>
even with a require "em-synchrony/fiber_iterator"
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<godd2>
Yea I have no idea. it was a shot in the dark.
<godd2>
although...
<godd2>
do you have pry installed?
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<Lightsword>
godd2, hmm think I may have got something
<godd2>
you can always drop binding.pry in a gem to see what the flip is going on
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<Lightsword>
EM::Synchrony::FiberIterator.new
<godd2>
and then use `gem pristine gem_name` to revert it
<godd2>
oh yea you could try that too
<Lightsword>
that made it go fast
<Lightsword>
but the responses are out of sync now
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<godd2>
isnt that what you wanted?
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<Lightsword>
yeah, but need to trace them, may have just messed something else up though one sec
<Lightsword>
ok, I think that worked
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<Lightsword>
I had changed a variable somewhere else
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<godd2>
k Ill go put "EM::Synchrony Expert" on my resume now
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<Lightsword>
godd2, cool :) this made my request tool 20 times faster
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<I_Eat_Humans>
hello ruby peeps
<agent_white>
hay dere
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<I_Eat_Humans>
So I have a string, which represents a software version "example: 2.5.1", I want to be able to do conditinal testing on it, example if < than 2.5.0, etc... I tried converting it to an interger and it won't work because it has two "."s any suggestions?
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<jhass>
I_Eat_Humans: Gem::Version
<I_Eat_Humans>
jhass: cool, but is there a way to do this without a gem?
<I_Eat_Humans>
one more for ya if you don't mind. How can I check that the version (which will be avariable called ver) is always formatted in "n.n.n" notation? and not "n.n" or "n.n.n.n" -- I am reading this from the command line as an argument.
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<hanmac1>
I_Eat_Humans: you can use regexp for that
<I_Eat_Humans>
hanmac1: I am new to Ruby... so I don't know how off the top of my head :)
<I_Eat_Humans>
thanks guys, that should get me where I need to go, much appreciated!!!
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<apeiros>
use \A and \z instead of ^ and $
<apeiros>
^ and $ are line related, not full string
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<hanmac1>
apeiros: ah ok i always do it wrong because i dont use then that much often ...
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<apeiros>
yeah, it's a common mistake
<apeiros>
also because this is somewhat unique to ruby
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<hanmac1>
apeiros: i found a funny method name ... or what do you say to: "spermy_recommendation" ? ;P
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<apeiros>
hanmac1: that's for ~> qualifiers ;-)
<hanmac1>
i know i just found the method name for that funny ;D
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<endlessdark>
Hey! I have a superfast request for you. Since I come from traditional languages like C, I have problems using ruby features and I end up writing code as if I would be writting C or Java.
<endlessdark>
So I will ask you to 'rubyfy' a small chunk of code if possible
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<gyre007_>
guys, is there any way how I can interpolate values in %w() defined array ?
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<gyre007_>
sa like interpolate variables passed to %w() array
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<hanmac1>
endlessdark: just make a pastie and then we can tell you what should be better
<endlessdark>
this small function I wrote, I guess is not well rubyfied
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<hanmac1>
apeiros: its about that WX::App thing ... without the system is not loaded, the constants are not defined, and == "red" MIGHT return false :/
<apeiros>
hanmac1: just ensure that it is loaded in test_equal too
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<hanmac1>
hm ok, i might do it, the only prob is that i cant test it in test_equal that its not loaded
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<crome>
load it in a hook
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<crome>
ah but then you won't be able to test it without loading it
<godd2>
yea extract the logic of selcetion to a different method and test against that
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<hanmac1>
hm yeah thats the very first test case for that project so its ok if its not perfect yet
<hanmac1>
hm i also might add rspec stuff too
<gyre007_>
hanmac1: excellent!
<gyre007_>
thanks
<godd2>
"but then you won't be able to test it without loading it" - it's okay to have dependencies. Although you may want to consider stubbing the constants?
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<apeiros>
I think not testing behavior when it is not loaded is perfectly fine
<hanmac1>
godd2: hm what do you mean with "stubbing" ?
<apeiros>
as that's just repeating the tests other should do (e.g. ruby stdlib/core tests)
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<godd2>
stubbing is when you make a fake version of an object so you can test the logic of something in isolation
<hanmac1>
godd2: so you mean i should just define the RED constants for the testcase or something similar?
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<godd2>
yea it's sort of like saying "assuming the rest of my system works the way it should..."
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<godd2>
but then that's why they're 'unit' tests
<hanmac1>
hm i just wanted to show that they cant be used without WX::App ... (i also will add that part extra in the documentation)
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<godd2>
that's fine, it's just a more integrated kind of test.
<godd2>
integration tests are more coupled and they test the interaction of different parts of your system
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<hanmac1>
its because in some ports the underling values like wxRED are not available before wxApp is started ... yeah its a bit fucked up but i cant do much about than writing around
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<godd2>
hehe, to me that just tells me that the test is trying to tell you something about your design ;)
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<hanmac1>
its not my design directly ... its about the binded lib ...
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<godd2>
oh it's tests over some ext code
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<Fractional>
gcdd2: Do you think there's anything I should change?
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<godd2>
however you are arguably violating the D in solid since you aren't injecting your dependencies but focusing on one SOLID principle at a time if fine
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<godd2>
it's only arguably violating it
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<Fractional>
godd2: How would you have done it to not violate either of the SOLID principles?
<godd2>
your Book#read method should have the BookReader object that will do the rading passed to it
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<godd2>
likewise, when you do Book.new you should pass a BookLoader to it, not have one created inside the method
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<godd2>
After all, BookLoader should know what paths are, not Book
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<godd2>
So like Book.new('Sparrow 2.0', BookLoader.new('./books/Sparrow2.0.txt')) or something like that
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<apeiros>
Fractional: seems like overboarding SRP
<hanmac1>
godd2: or let Book#load pass the book object to a static helper that does access the correct loader type form the path of the book
<apeiros>
Fractional: we don't have ArraySelecter, ArrayMapper etc. because arrays have bad SRP
<godd2>
I agree apeiros but I wasnt going to make that crticism since he needs to do it too much before he learns how much too much is
<apeiros>
Fractional: it isn't always easy to figure where to draw the line, though
<Fractional>
Yeah, but I am doing my best to learn! :)
<godd2>
#select and #map are included from Enmerable though
<apeiros>
godd2: sure. multiple opinions is a good thing :)
<godd2>
I respectfully disagree with apeiros. I think investigating different abstraction techniques and solutions results in a deeper understanding of the language
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<godd2>
But you do have a point that you can over-abstract very easily
<apeiros>
godd2: I don't think we disagree. I have nothing against investigating :) learning is important.
<godd2>
Over-abstraction is when you have two levels of abstraction over what you need. Finding out what you need is the hard part ;)
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<apeiros>
but I guess it's difficult to make up cases which make proper sense for the technique to be explored.
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<Fractional>
Now I am confused here. godd2 wants me to make the objects outside of the class to not break the D in solid, while Hanmac makes the objects within the class. Back on square one :'<
<distax>
is ?e some special kind of variable set by ruby itself
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<godd2>
distax no it's for codepoints
<hanmac1>
in ruby you can abstract it in the infinity ... its like the difference of a Painting and an Abstraction of a Painting ;P
<godd2>
distax it returns the ascii codepoint for the character
<distax>
it from 'the well grounded rub..' 1.9.3 though
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<apeiros>
distax: yes, Kernel#test was updated to accept strings. which is why ?e etc. still work.
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<godd2>
In Programming Ruby under the section on ? chars, they state "Do yourself a favor and forget this section."
<distax>
:)
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<apeiros>
distax: I assume the author simply didn't take their time to update that section, or still likes ?<char>. But as godd2 already said, I'd advise to not use that notation.
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<hanmac1>
godd2: +1 for the AT image ;P
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<distax>
the book is from 2009 and covers 1.9.3
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<distax>
but a new version was relesed this month
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<rpzdi>
how operating system control memory ram? how a system program which resides inside a chip controls the physical RAM chip?and change the variables between o.s and applications program and shell?
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<apeiros>
rpzdi: errr, what?
<godd2>
rpzdi #ruby is probably not the place to ask things like that
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<godd2>
but if you want to know that stuff, I suggest you pick up a book on assembly
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<godd2>
and a book on electrical engineering for computer scientists
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<rpzdi>
tnx
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<bulters>
dear people of #ruby, I present to you my humble question
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<bulters>
in which 'object' is my constant FooBarQuuxBaz defined... when i evaluate: module ::FooBarQuuxBaz; end
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<waxjar>
Object
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<bulters>
and with Object I assume (i know) you mean the class Object
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<waxjar>
yeah
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<bulters>
So module Blurp; end is actually the same as Object.const_set("Blurp", Module.new)
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<Mon_Ouie>
If you're at top-level, yes
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<bulters>
well, I want to define top level modules (and classes) from within a class, but defining const_set("::WorkDamnit", Module.new)... doesn't actually work
<bulters>
so betty call const_set on Object then...
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<waxjar>
can't you make a Module and mix that into Object at the end?
<Mon_Ouie>
That's because in module ::Foo; end the name of the module is Foo, not '::Foo'
<Mon_Ouie>
const_set
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<Mon_Ouie>
const_set wants only the name of the constant, it does not understand the scoping operator
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<bulters>
Mon_Ouie: I figured, just having some trouble finding a "root of all objects"
<bulters>
due to the somewhat cyclic nature of parents near the "root"-singularity
<apeiros>
Object is the root
<bulters>
which isn't actually a singularity in ruby ;-)
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<bulters>
nice, thanks guys... I might actually be able to ship something today now... one more hour left on the clock... deploy and off to the kids for the weekend ;-)
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<waxjar>
i guess it's some javascript history magic, oh well
<bulters>
waxjar: well, I'm running a kind of bootstrapping process for AR classes (yes, a rails thingy)
<apeiros>
waxjar: always make such methods module_function
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<apeiros>
waxjar: (that's how Kernel and e.g. Math work too btw.)
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<bulters>
but for multiple 'applications'
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<waxjar>
ah, didn't know that, but that makes sense
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<bulters>
I've been thinking about storing Module instances in a application top level constant (i.e. {app1: Module.new, app2: Module.new}) and refering to those instead
<bulters>
but that really fscks up error reporting ;-)
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<bulters>
At least now I get nice exceptions App1_SomeRandomIdentifier::User lalalala ArgumentError
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<apeiros>
bulters: I wouldn't put generated constants into the top level
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<apeiros>
App1::Generated::RANDOM_ID_HERE
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<apeiros>
or somesuch
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<apeiros>
I did something like that for my reloadable plugin system
<bulters>
apeiros: applications are identified by an internal uuid, some SomeRandomIdentifier is not really random ;-)
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<apeiros>
bulters: that's irrelevant to the suggestion ;-)
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<bulters>
So if app 1 has the identifier "invoices", and the uuid "12345" the base module will be Invoices_12345
<bulters>
but I catch your drift
<apeiros>
you generally don't put stuff into the toplevel. that's just bad design.
<bulters>
might be a smart thing to put in in a base module
<bulters>
thanks
<apeiros>
yw
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<hanmac1>
bulters: hm you might store the module objects in a instance variable of a master object
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<hanmac1>
and then you might so: Root["12345"]::Invoices or something similar
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<bulters>
hanmac1: Tried that, that was my first iteration of this, problem lies in error reporting, since your "key" will not be logged in default error logs
<bulters>
apeiros: true. I actually think it's a cleaner solution since it's still "application data"; but will defer actually implementing it that way until I get the green light to spent a few weeks on this project ;-)
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<bulters>
always a problemen, trying to define 'cleanness' for an app that's a poc, but is probably going to be used in production ;-)
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<endlessdark>
Fast question, I have a class for generating a string. It has the 'generate' public method and some others used by 'generate' that are private. As the whole prupose of the class is calling the 'generate' method, and it holds no data, should I declare it as a class method? or rename it as the initialize method?
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<endlessdark>
SampleString.generate vs SampleString.new
<tobiasvl>
sounds like you could just generate it in initialize?
<endlessdark>
I see creating an object pointless as I will not need it anymore
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<edwardloveall>
i like the class method approach
<edwardloveall>
SampleString.generate reads better to me
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<apeiros>
endlessdark: def SampleString.generate; new.generate; end
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<apeiros>
i.e., keep the rest as it is and provide a convenience class method
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<edwardloveall>
yes
<edwardloveall>
i was about to suggest that also
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<endlessdark>
is convenient creating an object that won't be used anymore?
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<endlessdark>
*an instance
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<apeiros>
endlessdark: implementation detail. whom of your users will care?
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<ferno>
What's the best way to remove a method from a specific class instance?
<endlessdark>
ok, I see
<endlessdark>
thanks!
<apeiros>
endlessdark: if your app is too slow and your benchmark show the generate method to be a culprit, then you optimize it. and since it's an implementation detail, nobody has to adapt anything.
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<olivier_bK>
some have already use mechanize ?
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<tobiasvl>
ferno: I guess it's this: class << your_instance; remove_method(:method_name); end
<ferno>
What's the best way to remove a method from a specific class instance?
<ferno>
Ah, my bad, ignore the dup
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<tobiasvl>
ie. removing it from the instance's eiginclass
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<ferno>
Hmm, but that gives a NameError, it isn't finding the method on the class (strangely)
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<znst>
How do I get the occurence count of a substring from a string? e.g. ocurrence_count("hello", "l") returns 2
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<jxf>
I have a date string generated from Date.today.to_s (e.g. "2014-10-17"). I would like the UTC time at midnight on this day, e.g. the result of Time.utc(2014, 10, 17). Is there a method that will get me that?
<ferno>
tobiasvl: It's an instance method, not a class method.
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<ferno>
Aka, it's defined within the clas with def method_name ... end
<godd2>
so like "hello".count("llll") will still be 2 since there are two l's in the original
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<godd2>
but "hello".count("oleh") will be 5 since each character in the argument matches up to all 5 in the original string
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<olivier_bK>
some have already use mechanize ?
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<centrx>
Yes, mechanize good
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<znst>
so it matches each character against the character set passed into count?
<happyface_>
"gem install compass” is installing the latest version of the “sass” gem. How can I get it to use an older version of the “sass” gem instead?
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<godd2>
znst that's right. think of the argument passed as a set of characters. order doesnt matter and duplicates are ignored
<znst>
is there a way to assert a string is valid html in the ruby library?
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<rubie>
hi all: anyone know what this error means? EventManager initialized. /Users/balwh/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/csv.rb:1256:in `initialize': No such file or directory @ rb_sysopen - event_attendees.csv (Errno::ENOENT)
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<rubie>
that event_attendees.csv file does exist
<rubie>
in the lib folder
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<allcentu1>
exit
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<bricker`work>
So I want something like this (the transaction tracer is from the newrelic client): https://gist.github.com/bricker/d2d8921b3b9e2dc4d2c7 so that every job subclass automatically gets the transaction tracer. The problem is that the method needs to be defined *before* add_transaction_tracer is called. I think I can defined a stub "perform" method on the base class, but is there a better way to accomplish this?
<bricker`work>
define*
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<Hanmac>
bricker`work: look at "self.inherited"
<jnylen>
I have a issue with paperclip/delayed_paperclip: sh: 1: file: not found
<jnylen>
any ideas?
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<bricker`work>
Hanmac: Oh yeah, good idea
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<pizzahead>
I'm confused because it looks like it's telling me that oauth2 needs to be at a version that will be fine with the upgrade
<godd2>
oauth2 (~> 0.8.0) ruby
<godd2>
that means up to 0.8.9 or something like that
<godd2>
so 0.9.3 would break the two things that are dependent on oauth2
<pizzahead>
ah I see , I was looking at it like > 0.8.0
<pizzahead>
ty
<havenwood>
yay, lifting up my left shift key and blowing on it fixed it!
<godd2>
yea the ~> means anything that doesnt change the first and second part
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<regexhelp>
how can I run a regexp scan on " 370 100% Done 0.0 0.0 82.0 371* 22% Stopped" to get the percents i.e. 100 and 22. I am having trouble getting it to work properly
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<pizzahead>
godd2: thank you!
<godd2>
regexhelp are there always going to be spaces before the number that has the percent?
<apeiros>
regexhelp: what have you tried so far?
<regexhelp>
godd2: yes white space i don't know if it's a space or tab or what but there will be whitespace
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<godd2>
string.scan(/\b(\d[^ ])+%/) ?
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<regexhelp>
i have tried .scan(/\s+(.*?)%/)
<apeiros>
godd2: any number of (digit plus non-whitespace) sounds wrong ;-)
<apeiros>
requires an even number of digits
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<godd2>
I missed a pipe
<godd2>
string.scan(/\b(\d|[^ ])+%/)
<apeiros>
godd2: just put all in the char-class
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<godd2>
darn thats wrong too
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<apeiros>
tbh, not sure why you have that [^ ] there at all. consumes % too btw.
<klmlfl>
so someone asked me what is the fastest way to learn to code and my answer was practice
<apeiros>
[\d.]+ IMO
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<klmlfl>
lots and lots of practice
<klmlfl>
their response was how is that the fastest, that seems hard
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<at3560k>
query: Been a python developer for a decade. I'd really like to have an interactive prompt *like* ipython... just for the basic functionality... command history, readline completion, a bit of coloring and pretty print... Is there something I can augment/enhance/replace irb with to do something like that?
<havenwood>
at3560k: using Pry instead of irb is a popular choice
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<txdv>
at3560k: what made you move to ruby?
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<havenwood>
at3560k: gem install pry pry-doc
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<at3560k>
txdv: wanted to at least learn it when I saw momentum in it, did my first plugin for logstash in ruby... new team I'm on works in it... so.. here I am learning the toolchain.
<at3560k>
havenwood: thank you
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<txdv>
poor pyton guy, getting gems shoved down his throat
<txdv>
:(
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<at3560k>
Hrm. Any recommendations about my desire to have totally isolated gems per project?
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<havenwood>
at3560k: Use Bundler?
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<havenwood>
at3560k: There're tools like gem_home that provide a similar feature to RVM's gemsets, but you can: bundle install --path vendor/bundle
<at3560k>
*headscratch* I am using bundle... but the gems go to the ruby that rbenv is using. Like if I have two projects on 1.9.3 I have to run bundle install when I switch between them or...not compatible?
<havenwood>
at3560k: TL;DR: --path: Specify a different path than the system default ($BUNDLE_PATH or $GEM_HOME). Bundler will remember this value for future installs on this machine
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<sssilver>
Hey guys... I am trying to build a project using compass, and it's failing to build. This is my first exposure to Ruby, so can anyone please help me understand what the issue might be? The output log is here -- https://bpaste.net/show/3098f2988de6
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<prasselpikachu>
hello everyone, a friend of mine is working on win7 with rubyinstaller (ruby 2.1) and devkit. now we have some problems with the tzinfo gem - as to be expected with windows. we already install tzinfo-data, but the same error, TZInfo::DataSourceNotFound still occurs...
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<hedin>
Hello, I have problems with https://github.com/jjmartres/VIMbix/blob/master/rakefile line 78, when I run rake daemon:start, It returns "starting vimbix" but it doesn't start and I don't know how I can make it return whatever it's doing, so that I can start debugging
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<hedin>
so basicly, how can I run the command on line 78: system("thin -c #{root} -C config/vimbix.yml -R config.ru start") from the cli, in a way so that it tells me what's happening?
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<hedin>
is this the wrong channel to ask about rake problems?
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<wasamasa>
I don't think so, it's just that apparently nobody capable of answering your question has read it yet
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<riles>
Hi! I'm having trouble getting guard to run rspec (#guard channel is quiet). When I save a file, guard observes the change, and the path to the desired spec is being constructed correctly, but the specs aren't actually running. In debug mode, I see "Hook :run_on_changes_begin executed for Guard::RSpec", but the specs aren't actually run
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<hedin>
wasamasa: okay, I'l just stick around :)
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<tzero>
does anyone use asset_sync, fog, middleman-sync, or any of that related chain-of-messes?
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<tzero>
I found some issue with deleting existing files, back into an asset_sync method, which looks exactly the same as a fog example, yet doesn't actually work at all
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<havenwood>
hedin: you could modify the gem with a `binding.pry` and take a look what the command returns when run with backticks.
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<havenwood>
hedin: or just try the command yourself
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<havenwood>
hedin: alternatively, change `config/vimbix.yml` to not be in daemonized in production mode, just print to stdout/stderr
<hedin>
havenwood: I just found out that "thin" was not in path... when I tried to run "~/.gem/ruby/2.0.0/bin/thin -c VIMbix -C config/vimbix.yml -R config.ru start" it worked
<havenwood>
hedin: ahh, what are you using to switch Rubies?
<literary>
help
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<hedin>
havenwood: dunno, i'm a dumb user when it comes to ruby related stuff... I just git cloned https://github.com/jjmartres/VIMbix and folloed the README
<havenwood>
literary: Wont you please, please help me. Help me help meeee, eeeee.
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<havenwood>
hedin: so it appears the instructions are presuming you're using the rubygems-bundler gem that auto-prefixes `bundle exec` to commands run inside the app root directory.
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<hedin>
how come ruby progs want to handle dependencies outside of package managers and seems to explode if some of the dependencies are installed via package management?
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<hedin>
Redmine is a good example of this problem... I at least have had quite a few problems upgrading redmine)
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<shevy>
anyone has tested
<shevy>
if input is an Array, is input[0] or input.first faster?
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<yxhuvud>
if that is an issue, you have a totally different problem in reality.
<eam>
my guess is that #first *should* be faster, but I don't know if it is
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<shevy>
yeah I think it should be
<shevy>
going to benchmark it
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<eam>
talk of optimization makes ruby people uncomfortable
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<yxhuvud>
eam: not really, but the point is to optimize the relevant thing.
<njames>
whois eam
<njames>
:-)
<godd2>
looking at source, first should be faster. fewer conditionals
<yxhuvud>
and if a relevant time is spent doing array lookups, the solution is generally speaking not to make it faster, but to make fewer lookups.
<eam>
and no arg on the stack
<eam>
yxhuvud: all approaches are valid
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<eam>
I suggest the uncomfortableness stems from the environment being so very difficult to optimize in
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<godd2>
oh no wait, looks like #first just runs [](0)
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<apeiros>
the [] syntax has an optimized path for hash and array iirc
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<yxhuvud>
eam: sure, but looking at first vs [] seems like the absolute last thing one should do compared to everything else one should look at.
<eam>
yxhuvud: it's an interesting question not because a typical ruby programmer should care, but because the implementation itself can optimize things like this and produce significant gains in the aggregate
<apeiros>
and iirc the performance difference is measurable. but in most cases completely irrelevant.
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<eam>
that is, it's not useful as an idiom, but it's very useful when we're bringing optimizing ruby itself into the discussion
<apeiros>
I remember .first and .at being faster than [] 1.8, but sometime after 1.9, it stopped being true
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<apeiros>
*limits
<apeiros>
brah
<yxhuvud>
apeiros: thanks for that ban.
<eam>
+1
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<apeiros>
yxhuvud: yw, but sadly it's rather useless. thankfully the spambot author is an idiot.
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<yxhuvud>
yes, life on the aggregate is much simpler because most of the evil people are idiots.
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<yxhuvud>
shevy: the difference is roughly 200 nanoseconds per use, so if you call #first 50 million times, then you will lost a second, in total. Usually, it is easier to find a lot of places that will gain magnitudes greater gains than that.
<shevy>
right so I should continue using .first for the remainder of my life
<shevy>
besides, why would you assume that your second sentence would not apply here either? I can optimize here AND elsewhere.
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<shevy>
eam is always making fun at how perl is faster than ruby :(
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<yxhuvud>
you can optimize in both places, but in the end, it is a good idea to start with the parts that yield greater gains and work yourself downward until it is fast enough.
<godd2>
what would need to be done to make ruby faster? complete overhaul of the c code?
<shevy>
godd2 probably to remove some features
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<yxhuvud>
the key to prioritizing optimizations is measurements.
<godd2>
why not just not use the features?
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<godd2>
or make it to where the rest of ruby is faster unless you use those features or something
<shevy>
godd2 well different people use different features
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<godd2>
that's true, but ruby's flak for being slow is from benchmark tests no?
<shevy>
and then you have this "we must retain backwards compatibility" problem
<shevy>
ruby can be quite slow or sluggish
<shevy>
at work in February 2014, the team was a perl team... they had a debian workstation on their cluster... you could somehow enable ruby 1.9.x "module load ruby"
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<shevy>
but there was some kind of weird delay when I invoked a simple .rb script compared to a simple .pl script
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<shevy>
ruby felt much slower there :\
<shevy>
and there are guys in the basement IT dungeon that won't upgrade for years
<apeiros>
tustex is the spammer now?
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<shevy>
yeah
<shevy>
after you banned that other bot, and I wrote something tustex instantly privmsg popped up
<godd2>
shevy seems like if there are a bunch of non-upgraders then backwards compatibility isn't as big of an issue
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<shevy>
godd2 right because they did not adopt ruby in the first place, perl still fills that niche :) they were about +10 years older than I was on average though so it is kinda a generation problem mostly
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<shevy>
they were math-heavy guys actually, bioinformatics and computationyl biology (and service facility for the other in-house/campus labs)
<shevy>
*computational
<eam>
the upgrade problem relates to overall software lifecycle for large codebases
<eam>
the more code you have, the longer it takes to migrate to new implementations
<shevy>
they did not even use perl .cgi so they were like from the 1995 era
<godd2>
well if anything, DHH has set most the ruby community to be ready for change
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<godd2>
(disclaimer: when I say "ruby community" I'm including Rails ppl)
<eam>
godd2: much of the problem is in boundaries with other non-ruby software. eg, distro packaged ruby
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<shevy>
well
<shevy>
the newer language needs to be significantly better than the older language
<shevy>
to warrant change
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<godd2>
Im not sure about that shevy. plenty of people grab the newest version of whatever without even considering the consequences
<godd2>
unless you're talking about a significant departure from whatever ruby currently is
<shevy>
I mean for like that team to move away from perl to ruby
<eam>
the newer language needs to be significantly *fashionable*
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<godd2>
oh I see
<shevy>
imagine if you worked for 15 years and hacked perl code every day at work
<eam>
fashion is sometimes driven by utility, but just as often not
<shevy>
they actually were really good at what they did too, so I would not only have to compete in perl vs. ruby but also against the knowledge stored in their brains, which easily outperforms my brain
<shevy>
except for cgi/CSS/HTML/javascript, that was entirely unknown to them ;)
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<sterns>
redis labs limits one to 10 connections on their free plan. Does Redis To Go have a similar limit? Or, can anyone recommend another free redis provider that has a significantly greater connection limit>
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<postmodern>
what type does RSTRING_LEN return?
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<apeiros>
interesting how seemingly simple problems become hard
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* apeiros
tries to maneuver ships on interception courses :)
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<yxhuvud>
apeiros: I learnt that lesson playing frontier loads of years ago!
<apeiros>
:)
* apeiros
works a bit on a game
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<bricker`work>
postmodern: long
<apeiros>
I'm currently wondering whether I want to try to come up with the algorithms for acceleration and course correction myself or google around
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<zenspider>
apeiros: I've written that code!
<zenspider>
there's a really good mathematica demo of it too
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<apeiros>
zenspider: in ruby? would love to see that :)
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<apeiros>
my basic problem is: I have a heading and speed (which are not necessarily towards the target). I can change acceleration and turn. so I have to compensate the speed and direction I already have. I think the result is some kind of arc function
<apeiros>
I think bezier curves work somewhat like that
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<zenspider>
apeiros: static triangle calculations each cycle. If you happen to be pointed the direction the enemy will be in at the right time, fire.
<zenspider>
it'll look like an arc over time, but each calculation is just plain triangles
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<apeiros>
ah, firing is easy. weapons are assumed to be turreted and will always fire in the right direction :D
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<apeiros>
(luckily, I make the rules of the combat arena)
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<zenspider>
apeiros: what type of game are you working on/with?
<apeiros>
cloning starbase orion. which in turn is a clone of master of orion II
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<yxhuvud>
do you have a limited amount of fuel as well?
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<apeiros>
during battle? no
<apeiros>
starbase orion's battle works quite differently from master of orion
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<apeiros>
the fight is entirely automated
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<apeiros>
weapons have different strength depending on distance. so lots is maneuvering, keeping the right distance.
<shevy>
defend the starbase onion!
<apeiros>
heh
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<apeiros>
watching tv while coding == huge efficiency loss :D
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<yxhuvud>
well, that holds for drinking beer while coding as well
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<yxhuvud>
(except that it breaks that damned analysis paralysis)
<apeiros>
^^
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<shevy>
minus the occasional toilet run
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pretty is now known as magic
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<micahhhhhh>
hi mattheewwww
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<TeresaP>
Anyone know who system commands are executed as?
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<bricker`work>
TeresaP: the user that is running the program
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<bricker`work>
TeresaP: you can type `whoami` to check
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<TeresaP>
Hmm, ok. I am having issues with 'ifuse' mounting my ipad, transfer the file with FileUtils.cp, and then later when I do a Dir.glob for the file it sometimes doesn't show the file even though it exists
<TeresaP>
I thought maybe it was a permissions issue
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<bricker`work>
TeresaP: unix doesn't hide files that you don't have permission to view - it will very clearly and loudly tell you when you aren't allowed to see something
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<cajone>
anyone had any experience of centos, where reading via readlines a txt file chomping the input and loading into an array cause all the readlines to be concat'ed into a single string in the array, I olny mentioned centos as this is the target machine I'm trying to get the script to run on, the script works fine on another linux distro
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<nobitanobi>
How do people comment on Github with several lines?
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<regexhelp>
don't think it'd be distro specific
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<bricker`work>
nobitanobi: huh?
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<bricker`work>
useful for local "cdn"
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<shevy>
cajone I don't think this can be the issue with centos - perhaps the ruby version you have is messed up. what is the ruby version anyway? and what is the exact ruby code you use?
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<cajone>
shevy: yeah I agree I carved out the failing 5 lines and put them in a separate file and all works fine with a small test sample on the centos server, the problem lies else where, thanks for the input
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<shevy>
\o/
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<shevy>
one problem squished
<shevy>
thousands more to come!
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<cajone>
shevy: challenges and opportunities shevy, not problems ;)
<eam>
cajone: what are the line separator characters?