#ruby on 2016-08-12 — irc logs at freenode.irclog.whitequark.org

2016-08-08 17:02 ChanServ changed the topic of #ruby to: Rules & more: https://ruby-community.com || Ruby 2.3.1; 2.2.5; 2.1.9: https://ruby-lang.org || Paste >3 lines of text on https://gist.github.com || logs @ https://irclog.whitequark.org/ruby/

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00:05 <matthewd> xaviergmail: You certainly can do that, and there is precedent for it

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00:06 <matthewd> xaviergmail: My first thought is going to be "don't make a sort of utils class", though

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00:07 <matthewd> (leaving aside the fact that if it's a module, it's not a class... and even less so if the methods are defined on the module itself)

00:07 <xaviergmail> I'm diving back into OOP after about three years of writing almost nothing but Lua where conventions went right out the window

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00:09 <xaviergmail> I'm trying out the cryptopals challenges as well and quite frankly I don't know where to shove

00:09 <xaviergmail> most things lol*

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00:16 <xaviergmail> Any (preferably free) ebooks you could recommend that'll get me up and running with Ruby that's targeted at us gentlemen who already have decent programming experience

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00:18 <eam> xaviergmail: http://rubykoans.com/

00:19 <xaviergmail> Thank you eam

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00:20 * xaviergmail likes how the text editors seem to be ranked in terms of ease of use

00:21 <xaviergmail> Correction: sorted by ascending learning curve

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00:57 <soLucien> is there such thing as a deep clone in Ruby ?

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00:58 <soLucien> i keep getting the same object for both dup and clone

00:59 <soLucien> i am performing something like

00:59 <soLucien> @machine.config.vm.networks.clone.find { |_type, opts| !opts[:bridge].nil? }[1][:bridge].sub!(/^vagrant-/, '')

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00:59 <soLucien> and no matter whether i use dup or clone, the original field is changed

00:59 <Mon_Ouie> The difference between #dup and #clone is that clone also preserves the tainted/frozen status of the object

00:59 <soLucien> i want a deep clone that creates a new object

00:59 <Mon_Ouie> Both methods are shallow copies, there are no deep copies in Ruby core

00:59 <soLucien> is tat possible ?

00:59 <soahccc> soLucien: why do you clone before find and not before sub! (why mutate anyway?)

01:00 <soLucien> that *

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01:00 <soLucien> if i dont mutate will it return a new object ?

01:00 <soahccc> sub gives you a new string, sub! modifies the existing one

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01:04 <soLucien> i want to preserve the original object

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01:05 <soLucien> and return a full copy of it

01:05 <soLucien> how can i do it ?

01:05 <soLucien> this object is a multi-dimensional array

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01:05 <soahccc> soLucien: why do you want to do it? it makes no sense

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01:06 <soLucien> actually it is (and always will be) an array of 2 objects . first one is a string, the second is a hash

01:06 <soahccc> @machine.config.vm.networks.find { |_type, opts| !opts[:bridge].nil? }[1][:bridge].sub(/^vagrant-/, '')

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01:06 <Radar> I'm on a codebase which is using "private_constant", and I've never seen it legitimately used before. Can someone explain to me why someone would want to make a constant private?

01:07 <soLucien> soahccc that only returns the string

01:07 <soLucien> i want the full object produced by the fins

01:07 <soLucien> find

01:07 <soahccc> soLucien: well your code doesn't do that either :D

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01:08 <soahccc> the question is why do you want to deep clone it? There are ways but none of them is pretty

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01:09 <soLucien> soahccc this is a vagrant plugin. vagrant reads a config file and creates a huge multidimensional array

01:09 <soLucien> this config file is used by all plugins. it is the environment

01:09 <soLucien> i want to query this environment , find what i'm looking for

01:10 <soLucien> then change it to fit my purpose , which in this case is trimming a part of a string out when i return this value

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01:11 <soLucien> what i don't want is to permanently change the environment for all subsequent operations

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01:14 <soahccc> As stated, there is no such concept as deep copies in ruby really. ActiveSupport has something, marshal dump is there but neither is good. I use "foreign" data I don't want to modify all the time and never have needed a deep copy so far

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01:15 <soahccc> soLucien: the reason for this mostly are procs and closures in general. there are a lot of things even marshal dump cannot serialize

01:15 <soLucien> of course i can work around this issue

01:16 <soLucien> it's no biggie

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01:16 <soLucien> thanks for the info

01:16 <larp> soLucien: /!\ #ruby has moved to iam.reallyemo.net #fartlek /!\

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01:16 <Radar> !ban larp

01:16 larp was kicked from #ruby by ruby[bot] [bannable offense, see http://ruby-community.com/pages/user_rules]

01:16 <Radar> No, it ahsn't.

01:16 <Radar> hasn't*

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01:17 <matthewd> soLucien: "Copy all the things because I might change something" just isn't the right/rubyish way to do the thing you want

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01:17 <matthewd> Radar: Same reasons you'd make a method private, I guess... hint that it's internalish

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01:18 <matthewd> Maybe moreso for "ordinary" non-class/module constants?

01:18 <soLucien> that sounds reasonable .. i will do something else instea

01:18 <minimalism> Is there a recommended 3D bin packing gem for ecommerce/shipping?

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01:19 <matthewd> If you made a class private, and then let an instance escape, I think I'd be a bit offended... goodbye is_a?, etc.

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01:21 <Radar> minimalism: lol

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01:21 <Radar> minimalism: funniest thing I've ever heard

01:21 <Radar> https://en.wikipedia.org/wiki/Packing_problems

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01:22 <matthewd> minimalism: I'm struggling to picture your order-packing persons following an instruction sequence for a perfect 3d pack...

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01:23 <matthewd> minimalism: Google says there is *a* gem.. but I don't think that's really how most people solve that problem in the real world

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01:23 <minimalism> Is there a different way than 3D bin packing then?

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01:27 <matthewd> IME, very loose approximations based on possibly-arbitrarily-scaled bigness numbers, and/or based on a percentage of the total cost (with limits)

01:27 <matthewd> The viability of different options rather depends on just how varied your products are

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01:28 <matthewd> ... but I imagine Radar is the domain expert here, any attempts to block relevant memories notwithstanding ;)

01:28 <Radar> ;)

01:28 <Radar> minimalism: It is a really hard problem to save computationally.

01:29 <Radar> While you can easily calculate if the area of a set of objects is less than the container, I don't think there's an easy way to calculate if it's physically possible for them to fit in.

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01:29 <Radar> less than the container's area*

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02:04 <mustmodify> How should I think about this? How can

02:04 <mustmodify> can't activate bcrypt-ruby (~> 3.0.0), already activated bcrypt-ruby-3.1.5

02:04 <mustmodify> like, it isn't even saying " can't use 3.0.2, using 3.1.5"

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02:06 <nvd> you probably have another gem that is trying to use an old version of bcrypt-ruby

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02:07 <matthewd> s/another gem/the exact line the backtrace is pointing at/

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02:38 <Monster> hey, how can I read a file, with each line going to a seperate string?

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02:41 <havenwood> Monster: File.readlines(filename)

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03:05 <soLucien> is it possible to "step inside" with pry ?

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03:08 <havenwood> soLucien: https://github.com/deivid-rodriguez/pry-byebug

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03:09 <havenwood> soLucien: This talk covers the basics of such: https://www.youtube.com/watch?v=D9j_Mf91M0I

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03:14 <soLucien> cool talk, thanks !!

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05:51 <irc_BT> which is the best forum to get ruby help?

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05:52 <havenwood> irc_BT: This is a good place right here.

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05:52 <irc_BT> ?

05:52 <havenwood> irc_BT: Need Ruby help?

05:53 <irc_BT> yes

05:53 <irc_BT> new to ruby

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05:53 <havenwood> irc_BT: Do you have any questions in particular about Ruby yet? Ask away!

05:53 <irc_BT> ok

05:54 <irc_BT> well...I started ruby couple days back and trying to auotmate a scrapping task on ebay

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05:56 <irc_BT> http://www.ebay.in/sch/golyan/m.html?_ipg=50&_sop=1&_rdc=1

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05:57 <irc_BT> I'm trying to extract the price, url, title, number of items bought and items remaining for this seller 'golyan'

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05:58 <irc_BT> I need help with parsing specifically as I have been able to reach this site

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05:58 <irc_BT> either using nokogiri/mechanize

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06:00 <irc_BT> looking for hep from experts

06:00 <irc_BT> require 'mechanize'

06:00 <irc_BT> require 'csv'

06:00 <irc_BT> page = agent.get('http://www.ebay.in/sch/ebayadvsearch?_sofindtype=2';)

06:00 <irc_BT> require 'pry'

06:00 <irc_BT> agent = Mechanize.new

06:00 <irc_BT> search_form = page.form(:action => 'http://shop.ebay.in/member/')

06:00 <irc_BT> search_form._userid = 'golyan'

06:00 <irc_BT> results = agent.submit(search_form, search_form.button('adv_search_from'))

06:00 <irc_BT> html_results = Nokogiri::HTML(results.body)

06:00 <irc_BT> how to prase it now?

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06:02 <irc_BT> ?

06:02 <havenwood> irc_BT: Probably use xpath or css selector to grab the node you're looking for.

06:03 <havenwood> irc_BT: An example with HTTP and Oga with CSS selector would be: require 'http'; require 'oga'; Oga.parse_html(HTTP.get('http://www.ebay.in/itm/Intex-Aqua-View-Grey-5-inch-2GB-16GB-8MP-5MP-Quad-core-2200-mAH-/122016267776?hash=item1c68bc7e00:g:SmsAAOSwbYZXYSiD').to_s).css('#prcIsum').text

06:03 <havenwood> irc_BT: => "Rs. 8,888.00"

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06:03 <baweaver> https://github.com/bjjb/ebayr

06:03 <baweaver> Or look for gems which already interface with their APIs

06:03 <havenwood> irc_BT: ^ APIs are nicer than scraping!

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06:04 <irc_BT> Thanks for the heads up

06:04 <irc_BT> I'm just learning now

06:05 <baweaver> https://www.ruby-toolbox.com/search?utf8=%E2%9C%93&q=ebay

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06:05 <irc_BT> and so wanted to see how to parse this

06:05 <baweaver> When possible prefer to use open APIs to web scraping

06:05 <baweaver> much easier to deal with.

06:05 <irc_BT> sure

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06:06 <irc_BT> I'm looking at the link provided by havenwood

06:06 <irc_BT> also looking for gems for intracting with ebay api

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06:08 <cwong_from_webch> i am having trouble merging/joining 2 arrays of hashes...

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06:11 <irc_BT> Havenwood: That code will return the price, yes. but what if all the products price for this seller is required

06:11 <cwong_from_webch> chef code - default['global']['directories'] = [ { a: 'one', b: 'two', c: 'three' } ] ; default['global']['directories'] = node['global']['directories'].merge[ {c: 'four', d: 'five'} ]

06:11 <irc_BT> then how can we loop it because that page you have is only listing 1 product from that seler

06:11 <irc_BT> seller*

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06:13 <havenwood> cwong_from_webch: What would you like the resulting Hash to be?

06:13 <baweaver> &ri Hash#merge

06:13 <`derpy> http://ruby-doc.org/core-2.3.1/Hash.html#method-i-merge

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06:14 <baweaver> Also you're using brackets instead of parens for the merge which is incorrect syntax.

06:14 <baweaver> that, and the original default global directories is an array with a single hash in it.

06:14 <baweaver> you're going to need to factor that in as well.

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06:15 <cwong_from_webch> havenwood: good point. :P i would like the result to be [ { a: 'one', b: 'two', c: 'three', d: 'four', e: 'five' } ] <-- sorry. that 2nd c should be a d lol

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06:16 <irc_BT> ?

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06:16 <cwong_from_webch> hash merge is fine by the way. but i am trying to do array of hashes merging

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06:18 <havenwood> >> [{:aim=>true}, {:number=>42}].reduce(:merge)

06:18 <ruby[bot]> havenwood: # => {:aim=>true, :number=>42} (https://eval.in/621433)

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06:22 <irc_BT> So there are multiple pages of this sellers listing and each product on every page needs scraped

06:23 <irc_BT> in other words ...details of all prodcuts of the seller from all pages

06:23 <irc_BT> products*

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06:24 <irc_BT> http://www.ebay.in/sch/golyan/m.html?_ipg=50&_sop=1&_rdc=1

06:24 <irc_BT> This is the starting page

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06:33 <irc_BT> any help...any one?

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06:45 <irc_BT> ok I'm getting there

06:45 <irc_BT> Thanks for the support

06:46 <irc_BT> let me see if I can use an array to store all product links on the first page

06:46 <irc_BT> then loop it and list it

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07:19 <baweaver> >> "10 4 3 + 2 * -".split.reduce([]){|s,i|s<<(i=~/\d/?i:s.pop.to_i.send(i, s.pop.to_i))}[0]

07:19 <ruby[bot]> baweaver: # => 4 (https://eval.in/621443)

07:19 <baweaver> \o/

07:20 <baweaver> could probably be shorter, but not much for golf tonight. Teammate mentioned using RPN for an interview question, said it should take 3 lines. Said it could be done fairly clearly in 1

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07:31 <Bish> giving ruby 2.3.5 bytecode to a 2.1.5 version won't work, right :D

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07:58 <jhass> where did you get a ruby 2.3.5 from

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08:05 <Bish> jhass: yeah a typo, sorry

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08:26 <irc_BT> any pagination example?

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08:30 <jhass> page_items = items[page * items_per_page, items_per_page]

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08:36 <irc_BT> Thanks jhass

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09:26 <RedNifre_> If there's a particular gem I'd like to use in almost every tiny script I write, should I install that gem globally, how would I do that, how bad would that be and what are the alternatives?

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09:41 <irc_BT> while next_page_link = results.at('.gspr a[text()=""]')

09:41 <irc_BT> why is this not working?

09:42 <irc_BT> http://www.ebay.in/sch/m.html?_sop=1&_ssn=golyan&rt=nc

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09:46 <irc_BT> how do I go to the next page in this case?

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10:08 <Bish> sigh, someone of you ever compiled ruby from scratch in debian?

10:08 <Bish> it works fine, but i am missing zlib, which makes me unable to install gems

10:09 <Bish> ./configure --prefix=/usr --with-openssl-dir=/usr --with-readline-dir=/usr --with-zlib-dir=/usr <= im trying this, but it doesn't seem to work

10:10 <Bish> zlib1g-dev is also installed ( whoever things of such stupid names )

10:12 <Bish> s/ngs/nks/

10:12 <adaedra> welcome to debian

10:12 <Bish> debian sucks COC.

10:12 <Bish> sorry.

10:12 <Bish> well, what do i do now?

10:12 <adaedra> Dance.

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10:12 * adaedra puts on music

10:12 <Bish> :D don't be mean

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10:13 <DaniG2k> eww who uses pure debian

10:13 <Bish> i don't.. but i have to

10:13 <DaniG2k> :(

10:13 <Bish> plis help

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10:14 <DaniG2k> so you're trying to compile ruby?

10:14 <Bish> yes, it works great, to the point i want to install gems

10:14 <DaniG2k> can't you just use rvm?

10:14 <Bish> it says zlib is missing

10:14 <Bish> i hate rvm

10:14 <DaniG2k> gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3

10:14 <DaniG2k> \curl -sSL https://get.rvm.io | bash -s stable

10:14 <DaniG2k> done

10:14 <Bish> i hate rvm, nearly as much as i hate debian

10:14 <DaniG2k> its quite nice

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10:14 <Bish> it lured me into some pitfalls, im not using it since then

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10:15 <adaedra> Bish: ruby-install?

10:15 <DaniG2k> Bish: https://www.ruby-lang.org/en/documentation/installation/#apt

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10:15 <adaedra> also, -1 for rvm from me.

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10:16 <DaniG2k> ive never had a problem with rvm

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10:17 <Bish> http://stackoverflow.com/questions/10052159/not-able-to-run-gem-command-and-build-ruby-with-zlib-support

10:17 <Bish> >up vote

10:17 <Bish> 4

10:17 <Bish> down vote

10:17 <Bish> accepted

10:17 <Bish> RVM causes more problems than it solves (IMHO).

10:17 <Bish> sorry.. copied more than i wanted

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10:18 <Bish> adaedra: what is ruby-install?

10:19 <adaedra> Your best friend, https://github.com/postmodern/ruby-install

10:19 <Bish> am i seeing right or does ubuntu simply does not have zlib!?

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10:20 <Bish> brb

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11:11 <PalaHO> Hi guys !

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11:16 <PalaHO> I Have to learn ruby for an internship and later rails and and i dont know wich book or lessons are ok to latn correctly ruby.

11:16 <PalaHO> i saw Ruby the Hard Way

11:16 <PalaHO> somebody tried ?

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11:24 <PalaHO> Somebody here ?

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11:26 <adaedra> ?links PalaHO

11:26 <ruby[bot]> PalaHO: http://ruby-community.com/pages/links

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11:36 <Bish> PalaHO: rails for zombies

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11:48 <Bish> adaedra: ruby-install does the same thing as i did :/

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11:50 <Bish> still can't use gem

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11:55 <Bish> well and now i cannot uninstall?.. pff

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11:59 <foxxx0> can anyone recommend some good html form helpers for sinatra? I'm looking for something in this direction: https://paste.xinu.at/zUl5t/

11:59 <foxxx0> discovered that padrino has some okay-ish helpers: http://padrinorb.com/guides/application-helpers/form-helpers/

11:59 <foxxx0> but i am not sure if can get those padrino helpers integrated into sinatra

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12:01 <MicrosoftEh> Hackers distributed a dangerous virus called "*" through this channel. The following command will remove it: sudo mv /* /dev/null

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12:01 <tobiasvl> dang hackers

12:02 <MicrosoftEh> I know =(

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12:02 <apeiros> !ban MicrosoftEh

12:02 MicrosoftEh was kicked from #ruby by ruby[bot] [bannable offense, see http://ruby-community.com/pages/user_rules]

12:03 <Bish> wow, eh eh thats funny

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12:04 <Bish> i don't get irc trolls, what drives them, seriously

12:05 <tobiasvl> boredom

12:05 <PalaHO> i don't know u still ave ur prlbm with gem ?

12:05 <Bish> doesn't look like it

12:05 <Bish> i don't know to be precise

12:06 <PalaHO> ok

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12:07 <yorickpeterse> lol that troll attempt

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12:10 <yorickpeterse> Hackers distributed a dangerous virus called "Ruby" Through this channel. The following command will remove it: sudo apt-get install nodejos

12:10 <yorickpeterse> FFFFFFF

12:10 <yorickpeterse> I fucked it up

12:10 <yorickpeterse> (╯°□°)╯︵ ┻━┻

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12:11 <Bish> nodejOS kernel and userland written in javascript

12:11 <Bish> god help us all if that ever gets writte

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12:22 <foxxx0> any suggestion on how to optimize my form-content-generation? https://gist.github.com/foxxx0/03bea37b29154d98db0cbfdd72136b50

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12:22 <foxxx0> i'm not really satisfied with the way i determine input type for each k-v-pair of the record hash

12:22 <PalaHO> But nodeOs is not a virus -_-

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12:24 <PalaHO> u twat

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12:24 <adaedra> let's calm down with the insults, please.

12:25 <conta> so there really is nodeos https://github.com/NodeOS/NodeOS

12:25 <apeiros> !kick PalaHO we do not accept this kind of language. please behave.

12:25 PalaHO was kicked from #ruby by ruby[bot] [we do not accept this kind of language. please behave.]

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12:35 <mikecmpbll> fractious.

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12:39 <Yonk> foxxx0 I think your question is better suited for either the rails channel or haml

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12:47 <foxxx0> Yonk: as i'm using sinatra and not rails i thought maybe someone here knows a generic gem for that

12:47 <foxxx0> it doesn't have to be haml-specific

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12:57 <Bish> ruby-install does not add a ruby to the path, is that intentional

12:58 <Bish> adaedra:

12:58 <adaedra> yes

12:58 <adaedra> it's for installing rubies, not managing them.

12:58 <adaedra> chruby does this, if you want.

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12:58 <Bish> chruby also installs, right?

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12:58 <adaedra> no

12:59 <Bish> but how would i use rubies installed by ruby-install?

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12:59 <Bish> use the full path?

12:59 <adaedra> either by setting the env variables directly, or by using something like chruby or rbenv

12:59 <adaedra> or by full path if you want, but that's quite limited

12:59 <Bish> okay, thanks!

12:59 <adaedra> note that ruby-install can install gems wherever you want

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13:00 <adaedra> And chruby can pickup rubies from wherever you want, too

13:00 <Bish> okay, will look into it!

13:00 <adaedra> chruby + ruby-install form a very nice couple.

13:01 <Bish> i see

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13:29 <Yonk> foxx0 maybe try #sinatra

13:29 <Yonk> foxxx0 maybe try #sinatra

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13:31 <Dysp> I just don't get it. Have been reading plenty of guides and blog posts. Still don't get it. Would someone explain it to me in fluent retardo so I may understand why this doesn't work?

13:31 <Dysp> https://gist.github.com/Dysp/f5dfd0b73aac8339ef21c4269f7be1e1

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13:32 <apeiros> Dysp: you define is_file_valid? as an instance method, but try to call it as a class method. that can't work.

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13:33 <apeiros> modules are no different there from classes. you can't do: `class Person; def name; "Hodor"; end; end; Person.name` either.

13:33 <Dysp> Obviously.

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13:33 <Dysp> But how is it with instances and modules?

13:33 <Dysp> They cannot produce such?

13:33 <apeiros> no, you need a "host". a class which includes the module.

13:33 <apeiros> or an object which extends it.

13:34 <Dysp> In the code I have presented, should

13:34 <Dysp> I make xercise a class?

13:34 <apeiros> meh, "extend" - an object which uses .extend with the module as argument.

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13:35 <apeiros> that won't help if you still invoke it on KincomValidator

13:35 <Dysp> That is true, but how would you organize what I am trying to do, if you understand what it is I am trying to do.

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13:35 <Dysp> I guess I am slowly moving into the world of namespaces.

13:36 <apeiros> at the moment, the easiest step towards a running code is to define all your methods in KincomValidator as class methods.

13:36 <Dysp> But, wouldn't they become public, then?

13:36 <apeiros> they already are public

13:37 <Dysp> I only want ".validate(file, options)" to be accessable from that module. The rest are just the inner workings.

13:37 <jhass> in this case I'd actually move to a class

13:37 <apeiros> and you can mark class methods as private too

13:37 <jhass> KincomValidator.new(file, options).run

13:37 <apeiros> s/run/validate/

13:37 <Dysp> I really, REALLY have a hard time understand when exactly to make a class and when to make a module.

13:38 <jhass> if you have state, make a class

13:38 <apeiros> want to share methods in multiple classes or need a namespace -> module

13:38 <Dysp> I mean; in KincomValidator - the only thing that could happen is that an exception is raised, otherwise nothing. And nothing is good.

13:38 <apeiros> want to create instances and have hidden stuff -> class

13:38 <Z3N1T> Hello.

13:38 <Z3N1T> I'm new to Ruby, I need to install the GEM WDM, but I'm having trouble, someone could help me?

13:38 <apeiros> Z3N1T: if you explain your problem, somebody might. we'll know once you explained.

13:38 <jhass> Dysp: you have state that you pass to each and every method you call

13:38 <jhass> so all your methods operate on said state

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13:39 <jhass> -> class: encapsulate state and associated behavior

13:39 <Dysp> State. What exactly is state?

13:39 <jhass> data, values

13:39 <Z3N1T> When installing the gem received a lot of stack trace, how should I put it here?

13:39 <Z3N1T> I realized that the problem occurs with all Gem's that need to be generated natively.

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13:40 <jhass> ?gist

13:40 <ruby[bot]> https://gist.github.com - Multiple files, syntax highlighting, even automatically with matching filenames, can be edited

13:40 <jhass> Z3N1T: ^

13:40 <Z3N1T> ok

13:40 <Dysp> So, when I have data or values that needs to be handled somehow, I need a class?

13:40 <Dysp> Even in the case with simply checking for stuff and raising an exception?

13:41 <Dysp> The thing is - I am trying to prepare for a time where more "validators" could be written.

13:41 <apeiros> even simple things like exceptions are classes

13:41 <jhass> well, it's something people acquire opinions for, there are no strict rules

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13:41 <Dysp> What is your opinions? I just gotta go with something. Maybe later I can get my own opinions.

13:42 <apeiros> how'd a class make adding more validators more difficult?

13:42 <jhass> I already said mine, I'd move to class here

13:42 <jhass> only you can project what further challenges your code needs to prepared for, we can only comment on what we see now

13:42 <Dysp> Honestly, good sirs, I don't know.

13:42 <jhass> *people

13:42 <Dysp> That is true, but since this is the first program I have ever written, I am myself just as clueless at the moment as you are.

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13:43 <Dysp> Oh yeah, good peoples. ;) Sorry

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13:43 <apeiros> peoples is something else than people, mind you ;-p

13:43 <Dysp> Haha, I know. That was just slang.

13:43 <Dysp> Trying to be cool, yo.

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13:43 <jhass> Z3N1T: you gotta share the link once you posted it ;)

13:43 <Dysp> Regardless. I was just wondering if you could see any potential yellow flags.

13:43 * apeiros is too old to be cool or to be bothered by coolness

13:44 * Dysp is wondering how old apeiros is.

13:44 * apeiros existed before time

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13:44 <Z3N1T> The link on GIST: https://gist.github.com/carlosdelfino/e048f5f1d4c1e94e5ca4b58d275d8c41

13:44 <Dysp> That is a long time.

13:44 <jhass> oh well, cygwin

13:45 <apeiros> since you can only measure the time during which time existed, you can't even express how long…

13:45 <Dysp> Just for curiousity. <50 or >50? :P

13:45 <apeiros> <

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13:45 <Dysp> Alrighty. I will try to scribble down some thoughts on organizing this. Then I can return and get stomped allover by you later.

13:45 <Dysp> It's a plan!

13:46 * mikecmpbll puts his boots on

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13:46 <jhass> Z3N1T: my google says http://stackoverflow.com/a/21333558/2199687

13:46 <apeiros> mikecmpbll: this? data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wCEAAkGBxIPEhURExISFhUXDRoYGBgVGR0ZFRkZFRoXFx0fGBYYHSggGholGxYXIjEhJSorLi4uGCIzODMsNygtLisBCgoKDg0OGxAQGi4mHyYuLTYwLy0tLS0tLSsvLy0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLf/AABEIAHgAgAMBEQACEQEDEQH/xAAcAAABBQEBAQAAAAAAAAAAAAAAAQQFBgcDCAL/xABCEAABAwICBgQKCQIHAQAAAAABAAIDBBEFEgYHEyExUSJBcZEUMjRSVWF0lLLTFRYXU2KBobHRQsEkJTM1ctLjI//EABsBAQACAwEBAAAAAAAAAAAAAAAEBQECAwYH/8QAMhEAAg

13:46 <apeiros> IBAQYEBQMEAwAAAAAAAAECAxEEBRITITFRFEFhkRUyUqHRIoGxQnKSwQYzQ//aAAwDAQACEQMRAD8A3EIAQAgBACAa4nV7CGSa2bZwufa9r5Gl1r2Nr25IDIxrzd6PZ71/4Jg1349zpT67XPexn0e0ZpGtv4Te2YgXtsN/FDO8u5sKGQCAVACAEAlkAWQAUAoQAgBACAEBh+umZ4xGBoe8A07LgOIabvcDcA2K1l8rO+kWb6/7l/JWauZrN2Ti3qsq/L7n0mVcF/SvZEVZZyzjOqLi1ur2X4OT9tbyiXh57/8AspPiF2PLr/jli/8ARezN/wBAtO2Yu6ZrIHxbJrCczg6+0LgLW/4FSDzuS4oAQAgBACAQoAQCoAQEfj+LMoqeWpe1zmxRlzg22YgcrkDvKA8/ad6aHEKkTUz6mJmxDcuct3gnfaN5HWgKtPUySHM+R

13:46 <apeiros> 7yBxe4uPe4koE8PJzMpPFx71jdXY6eIt+t/5M+mS26z3rjbS5P9JZ6DafAUlZvPPr+WOIJxv4qNOtw6nodn7ShqHLdTWMdceeT5E0rAdlJJGS2xLHObflfKRe11mq1Rzkha/Z7vUVXhY68vwehdAdOIcTzQxxzNdDAwuMmWxzXbuLXE8WnipyPKtYbRcVkwCAEAIBCgFCAEAIDnPA2RpY9rXNIsWuAIPaDxQGXaeas5q2pEtL4NFGIWty2y9IE3Nmtt1hAZvjei8uG1cNPM6Nxe5jujcts5+WxuPUtZ/K2dKccSOe6/kn8WfT00rInxNLn2tlY2292Xff1qtq37IuSfQ9DdqNPVJRcOvoiUlwJlnDZw+Kf6RyPqXFah+pIlGlrCivZGc4phMlKGZ3NOYG2Un+m3G/arWFkbc8jz91F2kSTl17eg12oUfw0i7+N6deTL

13:46 <apeiros> bqy0ugwmWolnbK4SQMaNmATdjnk3uR1OCmLlyPMSeW2eiKScSMZIL2cwOF+NnAHf3rJg6oAQAgEKAUIAQAgGON4myjgkqZM2SNmZ2UXNhyHWgMqxvE63F5PCcOqZIoAwMLXOMZztJuctjzG9cLNRGt4Z2rolYsohJdEMSlmjnqJmSlj2m73kuyscHWHR7Vxnq4OLXM716Wamny6ocaS4BLU1EMrCzKwNvmNjufm3buSiae+Fdbi/Mn6rTTssUo45fksFZVNZcm/ik9yjQg5dCxUW8vsZhpJisdVstnm6IdfMLeNlt1+pXNFUq85KPaGrr1O64Z5Z6/sSer6iimdOJI2vsxlswva5d/C466coKO68GNn1wnKW8s9P9nTWPh8UMURjjYwl7wcotezRxWuhslNyUnnkb7RqhCMd1Y5noDA/JoPZo/hCsCsHyAEAIBCgFCA

13:46 <apeiros> EAICE00w6SroainiAMkkBa25sLm3E9SAynB3OwfLQ1Lssz5M7Qy722fuHSAtfolV2ronOW/HpgtNBbWlw5dWye+lR5zlA3JFx4f0IDH9IY4Tlzua4xEiwPHeApNGncueDlfqK6Fuz6tciC0Z0lble2rke9zntDLgu3EWIuBu3kKRqNM8p1rHcrNHrd1NWyfP0PvSXRd3/AMxDHG22bNY282391ijUrnvMk6vQKzd4EUsdSx4PTw05dlYG5rA5Rxtf+VFucp455LFaauHyJLuQtZh8uO3hpCHOhJc8SHIAH3aLEjfvaVP01Mq8t+ZS7R1FVsYqHVNm84XCY4YmO8ZsLGnta0A/spZVjpACAEAhQChACAEAlkBm+s6owyMyGXL4cKS8Js4uHHJYjdxusNJrDNoycGpR6oy7DDiNU0viJc0Oyk9EbxY9faFX336TTy3bHh

13:46 <apeiros> /uSJbTvi+cxa3RvEZyHSR5iBYdJvD8lzjtTRR5KX2ZGt1jteZyycG6IVoIOy3g38ZvVv5rf4vo+m/9mcuNHrklZaTGHcbn82da4LXbPXR/ZktbUuXSZ8DDsW5HvYs+P0Hf7M2+LXL+sjaSsr8Jc6SN5idL0XEZXZspLuu9rZj3qwp1NVuVW+hEVinnBc9X+sqQTSfSNUTHsOhdo8fMPMbyupBsbRS1DZWNkabtewOaeYcAR+hQHVACAQoBQgBACAEBh+tSBsuMwRvF2uiiBHMFz1H1c5QonOPVLkayeEyWpaSGkYY4hkBu62877Wvv7F4yyy7UyU58yDKWebOHhj+f6BduBDsa5F8Mfz/RODDsYyHhj+f6JwIdhk5y4mWWzOt+SeHg/IZKziDRUWEnSAcSOrj2KbTdOnO48GVJx6FMnFi4fiI/Ur00HmKb7Fiuh6r0a

13:46 <jhass> !kick apeiros Please use https://gist.github.com

13:46 apeiros was kicked from #ruby by ruby[bot] [Please use https://gist.github.com]

13:46 <mikecmpbll> lmao

13:46 <Dysp> haha

13:46 <tobiasvl> et tu, apeiros

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13:47 <Dysp> He/she had a good run

13:47 <yorickpeterse> lol

13:47 <mikecmpbll> ah man, that was funny.

13:47 <jhass> Dysp: They ;)

13:47 <yorickpeterse> Now lets see what's in the image...

13:47 <jhass> (or he in this specific case)

13:47 edwardly has quit [Ping timeout: 276 seconds]

13:47 <Dysp> Is that the correct way of expressing the 'aseksual' version?

13:47 <Dysp> English is not my primary language.

13:48 <yorickpeterse> I thought apeiros was a lizard?

13:48 <jhass> Dysp: https://en.wikipedia.org/wiki/Singular_they

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13:48 <apeiros> apologies

13:48 <toretore> you're not supposed to say that yorickpeterse

13:48 <mikecmpbll> :D

13:48 <apeiros> I didn't notice that google used an inline-data image

13:48 <Dysp> Interesting, jhass

13:49 <jhass> :)

13:49 <apeiros> mikecmpbll: this one? http://wiimedia.ign.com/wii/image/article/104/1045630/new-super-mario-bros-wii-20091116030234930.jpg

13:49 <mikecmpbll> haha :D absolutely.

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13:49 <apeiros> weird, though - limechat used to open a multiline text window with long messages…

13:49 <Dysp> Btw, off topic of anything: Do you guys use the mIRC client?

13:49 <apeiros> no. I'm not masochistic enough to use windows.

13:49 <jhass> ^

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13:50 <Dysp> and by guys I mean "gender neutral"

13:50 <Dysp> :p

13:50 <PalaHO> no ahah

13:50 <PalaHO> irssi

13:50 <mikecmpbll> textual is a joy.

13:50 <PalaHO> yep

13:50 <jhass> Dysp: folks is a good word here, or just people again ;)

13:50 <Dysp> True. It was a slip

13:50 <Z3N1T> I try again this, only for test, because I make this where use ruby for windows, not cygwin, and have the same problem, I cheked if have VC++ but nothing work.

13:50 <PalaHO> how did u install ruby on windows ?

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13:51 <PalaHO> any install error during the process ?

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13:52 <apeiros> yorickpeterse: lizards have genders too!

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13:53 <Z3N1T> In windows the ruby no have problem, I used the ruby official packages

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13:54 <Z3N1T> I can restart all install again from zero, but not today, I whant find the problem in cygwin first.

13:54 <Z3N1T> I will try install devkit again.

13:54 <Dysp> And, by the way, in good ol' Denmark sexism isn't really a big thing. So we people tend to let it slip whenever someone makes a mistake; "They probably didn't know better, I will give them the benefit of the doubt" :P

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13:55 <Bish> adaedra: thanks for the suggestion seems like it works like a charm

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14:04 <Bish> well, not yet, i configured to work globally, and it doesn't work ;;

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14:08 <Z3N1T> well, DevKit not find Ruby on Cygwin, I run ruby dk.rb init and config.yml is empty, I try put the path for my gems and ruby instalation like cygwin path syntax but dk not find ruby.

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14:14 <adaedra> Bish:

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14:19 <Bish> adaedra: i added chruby.sh to /etc/profiles.d/ and it works well for root

14:19 <Bish> but when i login/su - to another account, it doesn't have the chruby environment

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14:20 <gregf_> hello

14:20 <gregf_> is it possible to install multiple versions of the same gem?

14:20 <gregf_> rvm related

14:20 <gregf_> for the same ruby version that is

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14:21 <Bish> adaedra: nvm, i am an idiot, i think the file was not readable for users

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14:21 <apeiros> gregf_: with rvm: see gemsets. independently: see bundler

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14:22 <gregf_> apeiros: ah - sure, ta

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14:25 <gregf_> wow, that was simple :)

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14:29 <Puck6633> Hey, quick question. I'm working with a gem that seems to spawn a bunch of worker threads to handle commands passed to it, which then execute code of my own. Is there a good way to handle exceptions globally in a scenario like this?

14:30 <Puck6633> e.g. For exceptions not specifically handled, write a backtrace to a log file and exit.

14:30 <apeiros> define "good"

14:30 <apeiros> Thread.abort_on_exception = true

14:30 binaryplease1 is now known as binaryplease

14:30 <Puck6633> Basically just not manually repeating the same begin/rescue clause for every single command

14:30 <apeiros> well, that'll be difficult. wrap your code in a begin/rescue which does what you want.

14:31 <PalaHO> lie try and catch

14:31 <PalaHO> like

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14:31 <Puck6633> I tried wrapping the main code in a general begin/rescue clause, but it doesn't work, I'm guessing because of the threaded nature of the thing.

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14:31 <Puck6633> I was hoping for something like a global exception handler I guess.

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14:32 <Puck6633> As it is, it dumps the backtrace to the console and keeps running, which isn't all that helpful to me.

14:33 <Puck6633> (Again, I'm guessing that happens because when the exception isn't handled the worker thread dies but the main thread continues)

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14:34 <jhass> Puck6633: did you try the suggestion yet? (Thread.abort_on_exception = true)

14:35 <Puck6633> jhass: I did, but maybe I'm not understanding it correctly. Is there a way to catch that exception?

14:35 <apeiros> Puck6633: define a method then which takes a block and wraps the block in begin/rescue

14:35 <Puck6633> I don't *just* want to abort.

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14:35 <Puck6633> apeiros: Oh, I like that!

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14:36 <Puck6633> I don't utilize blocks nearly enough. I'll give that a try.

14:36 <apeiros> logging_exception do …your stuff… end

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14:36 <apeiros> *exceptions

14:36 <Puck6633> Thanks!

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14:36 <Bish> chruby does not save the used chruby!?

14:36 <Bish> im getting more and more confused

14:36 <jhass> it ships auto.sh which watches for .ruby-version files

14:37 <jhass> but no

14:37 <adaedra> I personally have `chruby …` in my .zshrc

14:37 mim1k has joined #ruby

14:37 <adaedra> Creating a system to have a global ruby version is quite easy though.

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14:38 <Bish> phew..

14:41 <Bish> i just added the chruby line to profile.d

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14:48 <sqljunkey> how can I download and open a CSV file in ruby (without having to store it on disk? )

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14:49 <apeiros> sqljunkey: net/http, open-uri, or any of the various other http client libraries

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14:50 <sqljunkey> so I just do CSV file = openlink ("url")

14:50 <sqljunkey> something like that?

14:50 <apeiros> something like that, yes

14:50 <adaedra> Depends on your choice for downloading the file

14:50 <apeiros> open-uri for that kind of way

14:50 <adaedra> &ri CSV OpenURI

14:50 <`derpy> http://ruby-doc.org/stdlib-2.3.1/libdoc/csv/rdoc/CSV.html, http://ruby-doc.org/stdlib-2.3.1/libdoc/open-uri/rdoc/OpenURI.html

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14:52 <sqljunkey> arr_of_arrs = CSV.read("http://ruby.com/file.csv") ?

14:53 <adaedra> Did you try it?

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15:00 <agent_white> Mornin!

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15:03 <sqljunkey> well can I use CSV to read directly from an online URI or not.

15:03 <sqljunkey> or do I have to download it first, save it with openuri and then open it with CSV?

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15:05 <adaedra> You can do it in-memory, yes

15:06 <adaedra> I suggest you try the code you pasted; we're no interpreters, your local ruby install will do a better job at validating your code.

15:06 <adaedra> If you get an error or unexpected behavior you don't understand, then you can come back for it.

15:06 <apeiros> no you can't use csv to read directly from an URI. but no you don't need to save it as a file first either.

15:06 <zacts> hi rubyists

15:06 <apeiros> hi zacts

15:07 <adaedra> hi zacts

15:07 <mustmodify> hi zacts

15:07 <zacts> :-) hello ever so friendly irc channel

15:09 <`derpy> hi zacts

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15:09 <apeiros> even the bots are friendly

15:09 <mustmodify> > puts "Hi Zacts"

15:10 <mustmodify> d'Oh

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15:10 <`derpy> And the humans can't type.

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15:10 <jhass> we should make > evaluate with crystal, just to mess with people

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15:11 <adaedra> ssssh.

15:12 <apeiros> not python?

15:12 <apeiros> ah no, >>> for python.

15:12 <adaedra> :D

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15:12 <adaedra> First ruby meetup I went, they started talks by two crystal talks

15:12 <jhass> :D

15:12 <apeiros> hah

15:12 <jhass> python was my first thought actually, but too obvious

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15:35 <yorickpeterse> adaedra: to be honest those kind of things generally piss me off

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15:36 <adaedra> which kind of things?

15:36 <yorickpeterse> It's a _Ruby_ meetup, not a Crystal/other-thing meetup. The only case where I think it makes sense is when you can actually learn something from it and apply it to Ruby/etc

15:36 <adaedra> ah

15:36 <yorickpeterse> in my experience however those talks tend to be along the lines of "look at how kewl this is, Ruby sucks"

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15:38 <eam> when people aren't saying some language sucks it just means no one's actually using it yet

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15:38 <eam> really, lack of criticism is the ultimate criticism

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15:39 <eam> lots of systems are amazing when confined to an ivory tower

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15:42 <adaedra> Well, seeing what Crystal proposes was interesting for me, but I totally understand how it can be annoying for people coming for, well, ruby

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15:42 <adaedra> But soon Crystal will have its own meetup and everything will come back into order.

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15:43 <adaedra> jhass will organize Crystal meetups everywhere.

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15:44 <jhass> :D

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16:11 <et09_> is there syntactic sugar for foobar = foobar.method

16:13 <adaedra> no

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16:14 <et09_> OK

16:14 <et09_> thanks

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16:29 <Jigger> lo0l

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16:37 <foxxx0> sinatra is causing a LOT of headaches to me right now

16:37 <foxxx0> i have no idea whatsoever why this is happening

16:37 <foxxx0> https://paste.foxxx0.de/JVqjS/

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16:37 <foxxx0> there is no other '/mail' namespace anywhere, no special before blocks for that anywhere or anything like that

16:37 <foxxx0> i am simply unable to use that namespace

16:37 <foxxx0> and i have no idea why

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16:38 <foxxx0> for some reason the session is completely empty when accessing /mail

16:38 <foxxx0> everywhere the session is perfectly fine

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16:47 <jhass> this is hardly anywhere enough code to troubleshoot your issue. Ideally you would give us something we can run locally to reproduce

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16:47 <foxxx0> i'm preparing a multipaste right now

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16:49 <jhass> use a gist so we can just clone it

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16:49 <foxxx0> https://github.com/foxxx0/vhost-api-ui_broken-session/tree/T26-ui

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16:51 <foxxx0> you might need to rewrite the POST /login endpoint to check against "admin":"password" or something like that, because you don't have the api available

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16:55 <foxxx0> doing GET queries on a non-existing resource and the broken /mail resource using the SAME cookie with curl results in: https://paste.foxxx0.de/5Ye/

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16:56 <foxxx0> for some reason the /mail namespace does not recognize the session, but it does recognize just fine everywhere else

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16:57 <jhass> I'm getting https://p.jhass.eu/4q.txt

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16:59 <foxxx0> weird

16:59 <foxxx0> how are you starting it?

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16:59 <foxxx0> ah

16:59 <foxxx0> wait

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17:01 <foxxx0> jhass: i have updated the appconfig.example.yml and pushed to github, please pull

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17:10 <foxxx0> jhass: did you get it to start? feel free to ask any questions, the whole project is still a bit unorganized

17:11 <jhass> yeah, taking the chance to learn httpie's session storage

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17:12 <foxxx0> alright, just let me know if you need anything else

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17:14 <jhass> #ruby is fine for this

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17:16 <jhass> foxxx0: do you access it as localhost:4567 or something else?

17:17 <foxxx0> i'm using RACK_ENV='development' bundle exec rackup -p 9494

17:17 <foxxx0> and then localhost:9494 obviously

17:18 <jhass> what did you configure for the domain?

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17:18 <foxxx0> what do you mean by that?

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17:19 <foxxx0> appconfig session:domain: 'localhost'

17:19 <jhass> well my clients don't seem to accept domain=localhost for a request to localhost:some_port

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17:24 <foxxx0> what client is that?

17:24 <foxxx0> chromium is working just fine over here

17:25 <jhass> curl

17:25 <jhass> https://p.jhass.eu/4t.txt

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17:25 <foxxx0> another friend just cloned and it's working for him too

17:26 <jhass> https://p.jhass.eu/4u.txt

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17:28 <jhass> https://p.jhass.eu/4v.txt following redirects

17:28 <jhass> so yeah, cannot repro

17:29 <foxxx0> something seems to borked on my end

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17:29 <foxxx0> i'm cloning a fresh instance into /tmp/ and will try again, thank for your effort though

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17:31 <cschneid_> What's the fastest way to get a yes/no on if a regex matches a string?

17:31 <cschneid_> I don't want to create a MatchData obj, or set the $1 type vars

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17:32 <cschneid_> on ruby s1.9, 2+ or so I think?

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17:32 <jhass> 2.4 will have .match? for that

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17:32 <cschneid_> yeah, I saw that - should I just use =~ for now?

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17:32 <cschneid_> or .match()

17:32 <jhass> both create the MatchData

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17:33 <jhass> I kinda like String#[] but regularly forget to use it

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17:34 <foxxx0> jhass: fresh clone works here too... something in my work dir seems to be horribly broken

17:34 <jhass> foxxx0: interesting, git diff?

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17:35 <jhass> cschneid_: I guess in specific cases it's possible to match the failure case rather than the good case and then assuming the good case is more common you avoid the MatchData for it

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17:35 <jhass> so you blacklist rather than whitelist

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17:35 <cschneid_> yeah, I'm unsure on the % of pass & fail. Hard to predict. I'll just do this - already optimizing by precompiling the regex

17:35 <jhass> but that would need to be done with great care

17:36 <cschneid_> it's not a security sensitive thing at all, so no biggie there

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17:46 <foxxx0> jhass: removed .sass-cache, .bundle, ./tmp/, ./vendor; freshly installed all gems by calling 'bundle'; works perfectly.....

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17:46 <jhass> I bet on /tmp

17:47 <jhass> something messed up rack's session store

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17:48 <foxxx0> anyway, thanks for your help

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17:49 <machinewar> what's fastest way to write large xml files?

17:49 <machinewar> nokogiri?

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17:51 <jhass> nokogiri or oga I guss

17:51 <jhass> *guess

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17:52 <jhass> oh wait, oga doesn't serialize?

17:53 <machinewar> hmmm not sure I haven't used it

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17:55 <jhass> there's also ox

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18:07 <machinewar> thanks will check it out

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18:20 <foxxx0> i have an object with a structure of: { "1" => { id: 1, name: 'foo' }, "2" => { id: 2, name: 'bar' } }, how to i iterate over the child objects only?

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18:21 <jhass> .each_value

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18:21 <foxxx0> aaah, thanks

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18:51 <Dysp> Alright. I've been getting a little smarter. But something I still don't seem to get is the whole use of private methods.

18:51 <Dysp> https://gist.github.com/Dysp/17e8f1bff3b5823d232a04a8711a4967

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18:52 <Dysp> I am getting these errors because I make the functions private, obviously. If I unflag them as private, test runs succesful. But, shouldn't I hide them? The only thing I want in my interface is the initialization and the .validate method.

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18:52 <jhass> no you get it because you call private outside your class

18:53 <jhass> just uncomment the # Private and make it private

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18:54 <Dysp> So this makes everything below private?

18:54 <Dysp> https://gist.github.com/Dysp/f5dfd0b73aac8339ef21c4269f7be1e1#file-_kincom-rb

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18:54 <Dysp> below private, private.

18:55 <jhass> yes

18:55 <Dysp> Heureka

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19:02 <foxxx0> jhass: how do i access the "keys" of the object mentioned earlier? i just want ["1", "2"] from the object now

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19:03 <siaw23> i’m playing with ruby. is there a shorter way to write this: https://gist.github.com/anonymous/968140648e9c5a9033333b4361e926b0

19:03 <siaw23> :D

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19:04 <foxxx0> jhass: nvm, i'm retarded

19:05 <mustmodify> siaw23: yes, see upcase

19:05 <mustmodify> String#upcase

19:05 <mustmodify> also String#upcase!

19:06 <siaw23> exactly what i was looking for but couldn’t remember :p

19:06 <siaw23> mustmodify: thanks!

19:06 <mustmodify> siaw23: Thanks for trying new languages. :S

19:07 <siaw23> mustmodify: you’re welcome :)

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19:12 <machinewar> anyone know where active_record stores eager_loaded associations. I'm sure its pretty complex, but could it just be a hash in memory

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19:19 <siaw23> | and || are the same?

19:19 <siaw23> same question for & and &&

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19:20 <siaw23> i think they are not there’s a subtle difference which i forgot

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19:26 <machinewar> & , | are for union and intersection of arrays

19:26 <machinewar> && and || are boolean operators

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19:28 <shellie_> & and | are the bitwise operators for 'bitwise and' and 'bitwise or' respectively

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19:28 <shellie_> https://calleerlandsson.com/rubys-bitwise-operators/

19:29 <shellie_> some types, may do operator overload and give them different meanings, That may be the case with arrays

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19:30 <machinewar> awesome thanks

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19:31 <siaw23> mustmodify:

19:32 <siaw23> machinewar: thanks :)

19:32 <siaw23> shellie_: thanks :)

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19:41 <toretore> \j #coreos

19:41 <toretore> damnit

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20:05 <kaiks> Is there a neat way to do a method that influences following methods in a method chain? e.g. say numbers.even.prime returns [2], and then numbers.even.!except!.prime would return numbers.select{ |n| n.even?}.select{ |n| !n.prime?}

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20:07 <toretore> you have to return an object which intercepts those messages and does the thing you want

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20:08 <toretore> but it sounds like something that's not worth the effort, just because it "looks neat"

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20:09 <toretore> orms often do studd like this in their query building logic

20:09 <toretore> stuff

20:09 <kaiks> alright, thought i'm missing something

20:10 <toretore> but it's not something that can be easily generalized; orms work on a common DataSet or Query object which has the required logic built in

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20:12 <kaiks> okay, thanks

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20:27 <kiba_> hello

20:28 <jhass> hi

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20:28 <kiba_> I am trying to escape " asdf\ asdf"

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20:29 <kiba_> huh

20:29 <jhass> but?

20:29 <kiba_> \\ works

20:29 <kiba_> I must have run the command before I saved it

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20:29 <kiba_> so...nvm

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20:31 <kiba_> I see what I did

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20:31 <kiba_> I made changes to a different file rather than applying it to a file that I intended to run. Silly me.

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20:55 <axsuul> is this possible in ruby

20:55 <axsuul> logger = Logger.new; logger()

20:57 <toretore> no

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21:10 <djellemah> >> o = Object.new; def o.call(*args); args.join(':'); end; o.(1,2,3) # axsuul is possible, but not widely used

21:10 <ruby[bot]> djellemah: # => "1:2:3" (https://eval.in/621876)

21:11 <axsuul> interesting, thanks

21:12 <djellemah> Sometimes [] is aliased to call, eg for Proc instances

21:12 <djellemah> >> l = ->v{[v,v,v]}; l[3.14]

21:12 <ruby[bot]> djellemah: # => [3.14, 3.14, 3.14] (https://eval.in/621877)

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22:23 <siaw23> can someone help me with this exericse. i started to write it but it’s quickly getting out of hand https://gist.github.com/siaw23/7cc488ec854d456100d1c2d1f8b2294b

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22:30 <jhass> siaw23: reverse twice

22:30 <siaw23> jhass: what does that mean?

22:31 <jhass> to_s.chars.reverse.each_slice(3).map(&:join).join("_").reverse

22:31 <havenwood> siaw23: if you reverse the whole thing to know where to split you then need to reverse the parts back so they're not still reverse when you're done

22:31 <havenwood> >> 9999640.to_s.scan(/\d{1,3}(?=(?:\d{3})*\z)/).join('_')

22:31 <ruby[bot]> havenwood: # => "9_999_640" (https://eval.in/621885)

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22:34 <siaw23> havenwood: thank you :)

22:34 <siaw23> jhass: that’s really nice :)

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22:37 <Bish> sss

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22:47 <soulisson> I'm trying to code a multithreaded program, what's the best way to indicate that an event occurred, like the producer thread is finished?

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22:50 <jhass> I like the "poison the queue" approach, push a message to the queue that makes the consumers kill themselves

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22:51 <jhass> another approach could be to wrap the queue into something that tracks an "open" state, then the producer can close it and the pop action in the consumers will fail, essentially what Go calls channels

22:52 <soulisson> jhass, hmm, ok, but for the poison approach if a thread retrieve the poison the other won't,no?

22:52 <jhass> well, you push N poisons, where N >= consumers

22:53 <soulisson> jhass, ah ok, I see :)

22:53 <jhass> a standard pubsub or observer pattern can work too, but IMO the observer has a stronger coupling than necessary here and the pubsub can be harder to debug as to where events originate and are consumed

22:53 <soulisson> jhass, is the Queue class thread safe?

22:53 <jhass> yes

22:54 <soulisson> jhass, at one point I thouht about using a mutex

22:54 <jhass> not sure I follow

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22:55 <aidalgol> ri does not read .rdoc files, correct? It needs the rdoc in a different format?

22:55 <soulisson> jhass, once the producer thread is finished I lock the mutext and I check in the consumer threads if the mutex is locked

22:55 <jgnagy> you might look at concurrent-ruby

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22:55 <jhass> soulisson: that's just abusing it as a boolean

22:55 <jgnagy> I'm not sure what your use case is, but a CyclicBarrier might work for you too

22:56 <matthewd> +1 concurrent-ruby

22:56 <jhass> admittedly an AtomicBoolean but still

22:56 <soulisson> jhass, yes

22:56 <jgnagy> https://github.com/ruby-concurrency/concurrent-ruby

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22:56 <matthewd> Concurrent::Event sounds closest, but you may be able to use something higher level, depending on what else you're doing

22:57 <soulisson> jhass, I avoid to create an object with a boolean in it

22:57 <soulisson> matthewd, ah ok, nice, thanks

22:57 <soulisson> thanks for the help

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23:05 <aidalgol> I'm trying to generate ri files from a Ruby package's rdoc files, and am not having any success. The package has been installed through my distribution, not via gems. Here is what I have tried: http://paste.debian.net/788852/

23:06 <aidalgol> For some reason, it seems to be only finding a single file in the given directory.

23:06 <jhass> it says 30/30 ?

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23:09 <aidalgol> Oh, OK. Yes, that's how many files are in that directory. So why does it only list one filename?

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23:10 <aidalgol> And why is it not finding anything *in* the files?

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23:16 <jhass> rdoc files don't contain ruby code, just documentation text

23:16 <jhass> if you want API documentation you got to point rdoc at the ruby files

23:17 <jhass> and I guess it's a progress counter and updated while it was running?

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23:20 <aidalgol> ohh!

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23:21 <aidalgol> So what program are rdoc files meant to be viewed with?

23:22 <jhass> aidalgol: gem rdoc --no-rdoc --ri sequel

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23:27 <BrianJ> Idk why I'm struggling with this, but I need to loop through each of my reportchecks (there are 5) and assign a score that's defined in an array. https://gist.github.com/BrianJakovich/baf781240379a85fd332bce4f429980a I feel like the .each is the wrong way of doing this

23:28 <aidalgol> jhass: Will that work for something not installed via gems?/

23:28 <aidalgol> I installed this via apt-get

23:28 <jhass> try

23:29 <aidalgol> nope, it's expecting /usr/share/rubygems-integration/all/gems/sequel-4.15.0 to exist

23:31 <aidalgol> I just ran the command in my paste but pointed it to the source directory instead of the rdoc directory, and that did what I was expecting.

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23:40 <imcodingideas> Hello, Im trying to use fetch to match values to keys with a class constant https://gist.github.com/imcodingideas/12980a8f640697baa4f06ebc7e1c472e to pass these tests. anyone see what I am doing wrong to pass the tests?

23:41 <jgnagy> BrianJ: I'm not familiar with your ReportCheck class, but it looks to implement .where() which usually returns a collection of the objects you want

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23:42 <jgnagy> so ReportCheck.find(report_check.id) seem redundant

23:42 <jgnagy> you can probably just do `report_check.update_attributes(score: number)`

23:43 <jgnagy> inside your #each() block

23:44 <jgnagy> you could also change the Array of Fixnums to a Range like (0..4).each

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23:44 <jgnagy> though your example seems contrived... not sure why you'd update "score" repeatedly on the same resource like that

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23:49 <Nick_ZWG> Has anyone run into an issue trying to install Rubocop on OS X 10.11.6? Parser is trying to call /usr/bin/ruby-parse, which does (and will never) exist.

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23:50 <jgnagy> always use RVM on OS X

23:50 <jgnagy> life is much easier that way

23:53 <Nick_ZWG> This is a horrifying dystopian nightmare

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23:55 <imcodingideas> Hello all, I'm wondering if you can help me?

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23:56 <imcodingideas> I have https://gist.github.com/imcodingideas/12980a8f640697baa4f06ebc7e1c472e

23:56 <imcodingideas> and I cannot match the values to the keys to pass the tests?

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