apeiros_ changed the topic of #ruby to: Ruby 1.9.3-p327: http://ruby-lang.org (ruby-2.0.0-preview2) || Paste >3 lines of text on http://gist.github.com
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<deepgray> hi guys
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<slash_nick> hi
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<bluesnow> Hi, I'm working through the rails tutorial and at "rails generate controller home index"
<bluesnow> That added get "home/index" to my routes.rb
<bluesnow> Can anyone tell me what 'get "home/index"' means?
<bluesnow> It doesn't look like a URL mapping..
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<slash_nick> thinking about modeling real world mathy stuff... any gem dependencies I should think about using?
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<seanstickle> haskell?
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<slash_nick> bluesnow: yeah... "get 'home/index'" will infer you want to route a get request 'home/index' to the controller action HomeController#index .... it a
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<volty> hi, shorthand for obj.kind_of?(ClassA) || obj.kind_of?(ClassB) .... ?
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<banisterfiend> volty: ClassA === obj || ClassB === obj
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<volty> banisterfiend: i would like something like obj.one_of?(ClassA, ClassB, ...) // do i have to write the method?
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<banisterfiend> volty: well u can do: [CLassA, ClassB].any? { |v| v === obj }
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<volty> banisterfiend: nice, i forgot that way, i'll wrap that one, thx :)
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<volty> class Object; def any_of?(*a); a.any? { |v| v === self }; end; end; // right?
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<MattHulse> I am trying to pass the background color into code that generates an image using RMagick. I set background to the passed in value and then I run the following:
<MattHulse> img = Image.new(100,100){ self.background_color = background }
<MattHulse> It raises an error because background is nil in the block.
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<MattHulse> Admittedly I've been away from Ruby for awhile. Is this expected behavior in 1.9.2?
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<apeiros_> MattHulse: you're not showing why background should not be nil
<apeiros_> therefore - impossible to tell
<MattHulse> The previous line is background = "black"
<apeiros_> then no, not expected
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<volty> y = 5; class A; attr_accessor :x; end; a = A.new() { self.x = y }; puts a.x # => nil ruby-1.8.7
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<apeiros_> volty: of course
<apeiros_> the block isn't executed at all
<volty> ah :) thx
<apeiros_> add a proper initialize and it'll change.
<volty> ops, sorry, i forgot, maybe so: the block gets executed with initialize
<apeiros_> if you just yield, it'll raise
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<volty> if initialize, ok, thx
<apeiros_> you have to instance_eval the block (otherwise self isn't a, but main)
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<MattHulse> Okay, I left out an important detail it seems. background is an instance variable of my class. I assumed the same would happen when simplifying the example.
<apeiros_> MattHulse: stupid idea to leave out such information
<apeiros_> an ivar is NOT the same as an lvar.
<MattHulse> The code I posted works fine. It's this code that doesn't:
<apeiros_> if you make an example, make sure it does what you think it does. otherwise it's entirely useless.
<MattHulse> @background = "black"
<MattHulse> ImageMagick.new(100,100){self.background_color = @background}
<apeiros_> MattHulse: of course it won't work
<apeiros_> an ivar is bound to the same object that is represented by self
<apeiros_> and obviously Image::new instance_eval's the passed block
<apeiros_> otherwise, how'd self.background_color= work?
<apeiros_> so your @background refers to your new Image instance's @background, and that, of course, is nil.
<MattHulse> Wow, things have changed since I last worked with Ruby.
<apeiros_> when have you last worked with ruby?
<apeiros_> because instance_eval exists for 8y+
<MattHulse> I'm referring to being insulted in the IRC channel.
<MattHulse> thanks for the help
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<volty> MattHulse: apeiros_ is precious anyway, don't be too sensible
<apeiros_> he left
<apeiros_> and obviously he's not capable between making the difference between insult and telling somebody that he did something stupid
<apeiros_> gah, minus first "between"
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<volty> look, i, like him, leave ruby from time to time, but at least, when i see something strange, i do not use the same names for the variables
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<apeiros_> that's fine. but that's not the same as using different constructs.
<apeiros_> it's even fine to use different constructs. but before you ask, you verify that the problem still exists.
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<volty> agree
<apeiros_> not doing so is stupid. there isn't much to argue about that.
<apeiros_> but doing something stupid ain't the same thing as *being* stupid. and I didn't say that he was stupid.
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<cout> just because something is stupid doesn't mean you have to say that it is :(
<volty> it depends on the kindness of the stupid too :)
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* cout scratches head
<cout> volty: english isn't your first language, is it?
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<volty> not at all, my dear
<cout> volty: I know what you are saying but your choice of words tickles :)
<volty> it depends upon the kindness of the stupid?
<cout> yes, that
<volty> tell me that i write in a stupid way, honey :)
<cout> and "don't be too sensible"
<apeiros_> cout: I see no value in talking around issues. it doesn't matter in what words you wrap a fact, the fact remains the same.
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<cout> apeiros: I didn't say anything about talking around issues
<volty> :) not at all, i know enough, i'm old enough, smart enough, know what i don't know
<cout> apeiros: but if you don't want me to talk around the issue, then I'll be blunt
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<volty> apeiros_: mah, when you see a short man you don't say to him that he's short, do you? :)
<apeiros_> volty: if he asks me
<cout> apeiros: your choice of wording was, simply, stupid :(
<apeiros_> cout: so how'd you have said it?
<volty> but this pure man didn't ask you if his piece of code was stupid ? :)
<apeiros_> volty: read the backlog
<volty> poor
<apeiros_> I didn't say his code was stupid
<apeiros_> I said his act of NOT CHECKING that his example exhibited the behavior he asked about, was stupid
<jrajav> I might tell a short man that he's short if he came into a room full of people and asked why he couldn't reach the top shelf at a grocery store
<cout> apeiros: I probably would have said "oh, yeah, that's kind of important"
<apeiros_> cout: see, dressing up words
<apeiros_> tell me the truth in flowers…
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<cout> it's not dressing up anything
<apeiros_> yes it is
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<apeiros_> it's stupid not to check your example first.
<cout> no, it isn't
<apeiros_> it defeats the purpose of making the example in the first place.
<cout> you were simply being mean to make yourself feel better
<cout> that's stupid.
<apeiros_> cout: you're wrong.
<cout> I'm not wrong.
<volty> some people come here to ask when they are tired and desperate
<apeiros_> very much so.
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<bluesnow> Hi, I'm new to Rails
<volty> otherwise they could fix by themselves - if not stupid enough :)
<bluesnow> Generate scaffold created a posts_path, but I don't see the path when I type rake routes
<bluesnow> How does posts_path work?
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<cout> bluesnow: try asking in #rubyonrails
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<volty> it's stupid to ask in a wrong channel :)
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<volty> rdoc has problems when encountering :1
<volty> rdoc has problems when encountering :@1
<volty> rdoc has problems when encountering :$1
<volty> sorry
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<apeiros_> volty: you're stretching it :-p
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<volty> it was strech.pop; strech.empty? => true
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<shevy> stretching the pop
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<apeiros_> cout: ok, while talking with matthulse, I read the scrollback. and I did indeed not write what I wanted to express.
<apeiros_> I did write that leaving out the information was stupid. what I wanted to refer to was that not checking an example was stupid.
<apeiros_> I agree that what I wrote was not good. But I stand by my opinion that a) not fact-checking examples is stupid, and b) it should be pointed out as such.
<shevy> well he had no patience anyway
<shevy> he should argue with zenspider on #ruby-lang :>
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<shevy> hmmm
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<volty> what about "you should fact-check your examples, for the joy of my patience" ? :)
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<shevy> are people reading english letters faster than people who read chinese symbols?
<shevy> volty hehe. I think if you help people a lot over many weeks, you become impatient with them, and you try to bring them to the point where they are more efficient in demonstrating the problem they have
<volty> shevy: i don't beleive so, anyway they read with different side of brain
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<shevy> yeah, well they often face a problem and dont understand what happens, so they don't think about being terse, succint, concise. it's like someone having lost the way and needs help to find the way again
<shevy> RMagick died years ago too :(
<shevy> like the ruby GUI toolkits ...
<apeiros_> shevy: maybe you should go jruby - swing is afaik live and kicking…
<apeiros_> but from what I hear from manveru, so is Tk
<shevy> hmmm
<volty> true, they have to exercise and develop the right connections from the one to the other side of the brain :)
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<shevy> I could bite the bullet and learn java ... it's either java or C .....
<volty> what was rmagick about ?
<shevy> it was a wrapper over ImageMagick
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<apeiros_> shevy: hm? just use ruby on jruby. no java involved.
<apeiros_> you can use the java classes without a line of java afaik
<shevy> hehe
<shevy> hmm I even have java installed ...
<shevy> java version "1.7.0_07"
<shevy> well, I will give swing a try
<shevy> can't be worse than tk ...
<volty> unless a lot of calling, i prefer to build commands and call with system
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<shevy> you mean system('bla')?
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<shevy> for GUIs?
<shevy> I think I have a few thousand commandline .rb scripts by now
<volty> yes, for gui's too
<shevy> would be nice to arrange them all into GUIs / Gui-like components
<shevy> hmmm
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<shevy> how do you do that volty?
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<volty> building the command string, translating the variables and queuing into the string
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<volty> possibly putting the output on /dev/shm (or equiv on windows) for faster writing & reading back
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<shevy> hmmmmm interesting
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<shevy> volty you dont happen to have some simple example for that that could work?
<shevy> or know where I could look that up
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<volty> one of the next days i hope, big mess here
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<shevy> ok cool
<volty> shevy: anyway, a wrapper arround imagemagick cannot be that different from the cli options
<volty> (i mean you have to learn it anyway)
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<apeiros_> it's so annoying that you have to remember passing -1 as second arg to split…
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<volty> def full_split ˙
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<jsilver> what is the best way to convert ruby into C so it can be run for long periods of time, with stable memory management and no zombies
<jsilver> tried RubyToC and got this: https://gist.github.com/4186558
<charliesome> jsilver: don't bother
<jsilver> thought so
<jsilver> may rewrite the server in node
<jsilver> the server i have now is fine, for 10-100 people lets say, but the memory is very bad.. in any ruby
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<charliesome> jsilver: it's probably more an issue with your code rather than ruby
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<charliesome> is your code up on github or something?
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<jsilver> charliesome: yes
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<jsilver> the main thing im profiling is GChatServ.rb in master /
<gbchaosmaster> msg nickserv identify hunter2
<gbchaosmaster> messages[-2].delete
<jsilver> there's an easy crossplatform client and a macruby client "gem install globalchat" .. thats gui... for console you can just use client_console.rb in master
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<swarley> As I reach a point of desperation, I have to ask here for some opinions on the way I'm doing this https://raw.github.com/gist/4186786/c1b08668fe68886941b187b31665de9e8e51b2af/gistfile1.rb . Thoughts on how it could be done a little more elegantly? It's in raw because it's just one big YARD comment. But I'm trying to make this API better and I need some opinions
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<michu> hi what's a good book for a complete beginner with no programming experience ?
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<ozzloy> SICP
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<charliesome> ozzloy: sicp is a pretty heavy text even for experienced programmers
<ozzloy> it actually assumes no programming experience
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<ozzloy> michu, why's poignant guide is good. pretty sure it'd be ok for someone without programming experience, but i haven't seen it
<ozzloy> er... haven't seen someone with no programming experience read through it
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<jsilver> never recommend why's poignant guide
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<jsilver> waste of time
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<jsilver> don't bother
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<charliesome> has anyone actually read through all of the poignant guide
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<ozzloy> me
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<charliesome> ozzloy: you're one of the rare few
<tos9> I got about 5 lines in before the terrible sense of humor sent me packing.
<ozzloy> i'm surprised at that response. i found it fun to read and informative
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<jsilver> really
<jsilver> i hate the drawings
<jsilver> :)
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<jsilver> couldnt stand it
<charliesome> i liked the drawings and all that, i just hated how much fluff there was
<charliesome> it could be about a quarter of the size and still have as much relevant content
<tos9> Yeah. That too. I kept skipping forward hoping to finally get to something useful.
<ozzloy> how did you feel about dwemthy's array?
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<ozzloy> michu, do you already have ruby installed?
<michu> ozzloy: yes
<michu> came with slackware :-)
<ozzloy> cool, first hurdle cleared
<ozzloy> you're actually over what could have been a huge time-sink
<michu> hehe
<ozzloy> slackware, eh?
<ozzloy> i think about trying that every once in a while. maybe in a vm.
<michu> yup can't leave it :P
<ozzloy> what made you choose slackware?
<michu> yup it's good stuff , all the dev tools you need come with the dvd iso
<michu> that's why i mainly use it
<michu> well not all you need but i mean the basic stuff
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<ozzloy> well if why's poignant guide isn't your style, maybe this: http://pine.fm/LearnToProgram/?Chapter=01 i haven't read it, but it seems to address the issues mentioned by jsilver and charliesome
<charliesome> michu: ruby -v
<michu> ozzloy: ah okay thanks
<charliesome> if you're on 1.8, you need to get a newer ruby
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<jsilver> what issues?
<michu> charliesome: Ruby 1.9.3-p194
<michu> :-)
<charliesome> oh cool
<ozzloy> the bad drawings and fluffy-not-ruby-related text
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<ozzloy> jsilver, ^
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<charliesome> that's the first distro besides arch i've seen come with a ruby that's even slightly up to date
<jsilver> ozzloy: agreed
<michu> charliesome: oh nice :p
<ozzloy> michu, "all the dev tools" makes me suspect you're coming to slackware from some version of ms windows. is this the case?
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<michu> ozzloy: no sorry what i meant to say is that it comes with git mercurial , programming languages , compilers etc.. on the dvd iso , really like that because i don't have internet all the time :/
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<ozzloy> if so, you might try any other distribution, like ubuntu. compared to ms windows, they all come with "all the dev tools", or have them easily available through a package manager (like an app store)
<ozzloy> man, i'm getting tons of lag
<ozzloy> michu, oh, i see
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<michu> ozzloy: you see i really can't install ubuntu and install stuff later because i don't have a working internet connection , but with slackware a lot of stuff is already in the iso
<ozzloy> yeah, that makes sense
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<ozzloy> i take internet for granted.
<michu> man hopefully i'll get my own internet connection some day *sigh*
<michu> ozzloy: haha yeah man just get disconnected for months and you'll wish you valued your "internet" time more :p
<ozzloy> best of fortune to you!
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<michu> thanks !
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<michu> grrr tons of lag here
<ozzloy> yeah, i'm appreciating it right now. thanks for giving me contrast
<michu> :-)
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<foucist> michu: what sort of internet do you have?
<ozzloy> so you're not new to unix-y OSes
<michu> foucist: right now ? none but i'm at a family member's house we have at&t u-verse
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<michu> ozzloy: nope!
<michu> just programming
<michu> really want to get into web dev to earn some money
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<ozzloy> rails is a good way to do that
<foucist> michu: web dev wise, javascript is the bomb.. and ruby on rails too
<ozzloy> so ruby is good
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<michu> foucist: yeah awesome stuff !
<michu> ozzloy: awesome
<ozzloy> rails-for-zombies comes to mind. i started it. it seemed pretty gentle.
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<ozzloy> oh
<michu> ozzloy: is it free ?
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<ozzloy> that's totally on the internets though. yeah. or it was free when i did it
<michu> it's some sort of video tutorials right ?
<ozzloy> yeah
<michu> grrrrr yeah that will be a problem lol
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<foucist> michu: just dl lots of books and videos all at once onto a usb stick or external drive perhaps?
<michu> foucist: yeah that's what i can do for now
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<ozzloy> while you have internet, read through this: http://tryruby.org/levels/1/challenges/0
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<michu> ozzloy: oh nice thanks i'll do that , btw omg i can download the rails for zombies videos and slides from their site !
<ozzloy> oh you can? awesome
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<foucist> michu: pm
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<coj> for rails, can someone point me to a way to delay a job by a specific time and modify the delay as needed? so i can update the db only when the user hasn't made any change for 5min, for example.
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<iamjarvo_> do you guys see ways of improving this script http://pastie.org/private/sbwl9x8naf0glyle4bvscq
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<iamjarvo_> con why don't you have a cron task running
<iamjarvo_> coj ^
<heftig> coj: where is the state saved before its put into the db?
<coj> a cron task executes at various intervals, doesn't it? what i want is a rolling expiry time, say 5min
<coj> i'm working in rails, so i'm not sure how to store an impermanent state
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<iamjarvo_> you can make it persist and then delete it or change it after your requirements happen
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<iamjarvo_> you can run the job every minute
<coj> but then i'd just be hitting the DB every time the user made the change, which is what i was trying to avoid
<coj> *made a change
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<siameseguy> hey guys, I'm making a tic tac to game, but I'm having trouble implementing the win condition. can someone help me?
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<reactormonk> siameseguy, go on...
<siameseguy> I'm using a hash to store the inputs
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<siameseguy> i just need to inter ate through it every time a play remakes a move and if make a row then they win
<heftig> much faster.
<heftig> benchmark it!
<siameseguy> question is, how to i make the game realize that someone has won?!
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<reactormonk> siameseguy, you're using a sparse matrix - I'd use a full one here. But that's detail
<siameseguy> reactormonk: I'm not sure what that means
<heftig> siameseguy: by looking at the game board and checking if there's a row, a column or a diagonal that's all the same symbols
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<iamjarvo_> heftig can you explain whats going on in the enumerator.new?
<reactormonk> siameseguy, wikipedia
<heftig> iamjarvo_: it creates an infinite sequence
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<siameseguy> heftig: how do i do that? heres my code so far
<iamjarvo_> hrm
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<heftig> siameseguy: eww, spaghetti code, and recursive at that
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<heftig> iamjarvo_: basically, taking one value from the sequence runs the code until the y << a (which outputs one value). then it's paused there until the next value is requested
<iamjarvo_> heftig o ok. i will have to play with it to understand. its way faster though
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<heftig> iamjarvo_: your recursive code calculates fib(7) as fib(2) + fib(1) + fib(2) + fib(2) + fib(1) + fib(2) + fib(1) + fib(2) + fib(2) + fib(1) + fib(2) + fib(2) + fib(1)
<heftig> iamjarvo_: the calls of fib(x) explode as n increases, you're not reusing already-calculated values at all, and you're doing a whole new recursion for each step of the loop
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<iamjarvo_> heftig yea
<iamjarvo_> thank you
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<horrror> guys - how effective does those shazam-like apps that you can humm and it identifies your song?
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<foucist> horrror: so effective does they
<horrror> huh?
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<heftig> horrror: Has anypony really been far even as decided to use even go want to do look more like?
<horrror> ;]
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<andrewhl> is there a way I could refactor this? https://gist.github.com/4187602
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<andrewhl> I originally had self.accounts.any? { |account| account.event.id == event_id }; but it choked if any of the accounts did not have an event
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<andrewhl> just wondering if there's a way to condense the whole thing down to one line
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<horrror> not one line, but you can account.event.id == event_id if account.event
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<Hanmac> horrror & andrewhl: self.accounts.any? { |account| account.event && account.event.id == event_id }
<andrewhl> Hanmac: nice, thanks
<horrror> nice
<horrror> btw why r u '==' and not '=' ?
<Hanmac> horrror google it
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<horrror> i know that = is for setting and == for comparing
<andrewhl> == is equality
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<andrewhl> =~ is comparison
<Hanmac> horrror than you know why "==" and not "="
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<andrewhl> horrror: .any? evaluates the block to true or false; so it needs to be a logical operation and not an assignment
<Hanmac> andrewhl: =~ is for regexmatching (i dont know of comparison is the right word for that)
<andrewhl> Hanmac: sorry, was trying to fuzzy match his semantics:) I know
<andrewhl> Hanmac: but regex is closer to a comparison than strict equality... I guess
<Hanmac> <=> is needed for Comparison
<Hanmac> === is also interesing (i dont have the right word for that)
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<horrror> andrewhl: comparing is an action which results in either equally or not
<andrewhl> Hanmac: I believe the word is identity
<horrror> correct
<Hanmac> no
<Hanmac> === is used for that: Array === [] #=> true
<Hanmac> (1..10) === 5 #=> true
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<heftig> Hanmac: case equality
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<Hanmac> yeah i want to show them that "identity" is not the right word ... we are not #php :P
<heftig> Hanmac: er, or more correctly, "case subsumption"
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<werdnativ> I have an occurrence object that wraps a @start_time and delegates to it.
<werdnativ> I'd like to be able to do: Time.now - Occurrence.new(Time.now - 60) # should == 60
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<werdnativ> I can make it work the other way when my occurrence is on the left… is it possible?
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<werdnativ> Looking at the method source here: http://www.ruby-doc.org/core-1.9.3/Time.html#method-i-2D it looks like the receiver doesn't coerce the argument… I'm guessing I can't write a to_time method or anything to make it work.
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<werdnativ> Just tried redefining the minus method on Time, but it says it has no superclass method when I call super in it.
<Hanmac> werdnativ you need to use alias
<Hanmac> bzw alias_method
<charliesome> werdnativ: if you redefine a method, calling super won't call the original method, it'll look in ancestors
<charliesome> Hanmac: i like to avoid fucking with aliases. if performance isn't an absolute priority, imo it's best to keep a reference to the original Method
<werdnativ> oh, right… thanks. or include it via module or something.
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<charliesome> werdnativ: also, it doesn't call to_time or anything, but time_add() does call to_int or to_r
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<werdnativ> so that means there's no sane built-in way for Time to diff a non-Time object?
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<charliesome> it doesn't look like it
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<cj3kim> hello
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<Gate> hi
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<aquagrunty> does anyone have a good doc source?
<aquagrunty> for ruby
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<charliesome> aquagrunty: http://ruby-doc.org/core-1.9.3/
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<buscon> is there a command line tool in ruby?
<shevy> buscon you must define what is a command line tool
<shevy> because the answer to your question, by default, is yes
<buscon> an interactive command line
<buscon> like in python
<shevy> ah
<buscon> eheh
<shevy> yes, "irb"
<Mon_Ouie> See also pry
<buscon> ok, thx
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<mindbender1> what's the best way to upgrade rubygems on debian
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<apeiros_> mindbender1: I'd say by not using apt* and then simply `gem update --system`
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<mindbender1> apeiros_: I got this when I treid that initially
<mindbender1> ERROR: While executing gem ... (RuntimeError)
<mindbender1> gem update --system is disabled on Debian, because it will overwrite the content of the rubygems Debian package, and might break your Debian system in subtle ways. The Debian-supported way to update rubygems is through apt-get, using Debian official repositories.
<mindbender1> If you really know what you are doing, you can still update rubygems by setting the REALLY_GEM_UPDATE_SYSTEM environment variable, but please remember that this is completely unsupported by Debian.
<apeiros_> yes, that's because you used apt to install ruby/gems
<mindbender1> so I uninstall first?
<mindbender1> apeiros_: so what's the recommended way to install
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<mindbender1> on Debian
<apeiros_> personally I prefer rvm
<mindbender1> rvm?
<apeiros_> http://rvm.io
<apeiros_> allows you to keep your OS ruby (in case any apps installed via apt rely on it)
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<mindbender1> apeiros_: ok thanks let me check it out
<mindbender1> apeiros_: so won't the one rvm install conflict with the existing install
<apeiros_> should not, no
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<mindbender1> pls give me a quick incantation for rvm to install gem
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<Mon_Ouie> Just use the regular gem command
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<gcds> hello
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<postmodern> mindbender1, you could just install ruby into /usr/local
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<postmodern> mindbender1, ./configure --prefix=/usr/local && make && sudo make install
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<gcds> is it possible to make string replace with dynamic replacement like pass to block?
<mindbender1> postmodern: will that solve the gem issue
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<postmodern> mindbender1, 1.9.3 comes with a newer version of rubygems
<postmodern> mindbender1, it will also let you run `gem update --system`
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<mindbender1> do I need to uninstall something before using the MRI one
<postmodern> mindbender1, nope, /usr/local takes precedence over /usr
<mindbender1> postmodern: I'll give it a shot and see how it goes sounds like a good alternative, thnaks
<mindbender1> thanks
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<mindbender1> postmodern: how do I deal with this message: Package libreadline5-dev is not available, but is referred to by another package.This may mean that the package is missing, has been obsoleted, or
<mindbender1> is only available from another source. However the following packages replace it: libreadline-gplv2-dev:i386 lib64readline-gplv2-dev:i386 libreadline-gplv2-dev
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<postmodern> mindbender1, oh, use libreadline-gplv2-dev instead
<mindbender1> ok thanks
<postmodern> mindbender1, debian has slightly different package names than ubuntu
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<mindbender1> ok
<shevy> mindbender1 you always need to decripple those packages
<mindbender1> decripple?
<shevy> sure. if you compile from source, you get everything. if you install packages, they split up things into subcomponents
<shevy> and name their dev- packages differently too
<mindbender1> shevy: I see what you mean
<shevy> as far as I know there is no global way to say "give me everything that should be contained whenever I use apt-get etc..."
<mindbender1> dev habits I guess
<shevy> yup. they reason that "a server OS never needs .h files by default"
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<shevy> readline has two "main" versions, version 5.2 and 6.2 - latest source is at http://ftp.gnu.org/gnu/readline/readline-6.2.tar.gz, in my opinion installing the header files of any readline version works just fine, i.e. it seems on debian the main package is libreadline-dev
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<shevy> postmodern hmmmm
<mindbender1> shevy: I think libreadline-gplv2-dev
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<shevy> postmodern why does ubuntu not use the same names for packages? :\
<mindbender1> works fine
<shevy> distributions are the ultimate cargo cult...
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<postmodern> shevy, no clue on that one
<postmodern> mindbender1, when you figure out all the correct debian package names, mesg me
<postmodern> mindbender1, i'll add a debian specific command to the wiki page
<shevy> \o/
<mindbender1> postmodern: ok
<shevy> mindbender1 - if you want to read a bit philosophy from a debian-ruby guy, have a look at: http://www.lucas-nussbaum.net/blog/?p=566
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<postmodern> last i heard, debian/ubuntu were about to make the switch to ruby 1.9 as the default ruby
<postmodern> or atleast in their testing branches
<mindbender1> shevy: thanks
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<shevy> I think ubuntu did it already
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<shevy> the last 2 weeks when I tried ubuntu-based distributions, 1.9 was the ruby that came with it
<shevy> no idea how much "main" ubuntu was lagging behind that
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<postmodern> i kind of like how Fedora was ahead of everyone (again)
<postmodern> 1.9.3 has been the default ruby in Fedora 17
<postmodern> also gems are automatically installed into ~/.gem for normal users
<postmodern> or into /usr/local/share/gem/ as root
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<shevy> yeah
<shevy> well, the glibc 2.16 causes some compile problems here and there
<shevy> now I am back on linuxmint again... ldd (Ubuntu EGLIBC 2.15-0ubuntu20) 2.15
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<shevy> I am almost happy with it!
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<mindbender1> shevy: that guy sounds full of pain
<shevy> mindbender1 hehehe
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<mindbender1> that's Debian for you
<shevy> mindbender1 I have no pity for distributions. they change things in ruby, people come here asking for help, and then other people have to fix up problems caused by those distributions in the first place
<shevy> my favourite recent example:
<shevy> require 'mkmf'
<shevy> it wasn't available when I tried!!!
<shevy> they deliberately removed it
<postmodern> yeah, it's in the ruby-dev package
<shevy> the mental mode for this is - "You either stay in the distribution ecosystem, or you are on your own."
<postmodern> or ruby-devel on redhat/fedora
<shevy> haha
<mindbender1> shevy: exactly
<shevy> they all use different names too :)
<postmodern> shevy, wait they removed it completely?
<mindbender1> I think it's not a bad idea too
<shevy> postmodern, nah, I am sure it is available, otherwise one could not compile things natively
<shevy> and they at least must do so one, in order to provide packages
<shevy> *once
<mindbender1> to be top notch with your dependencies
<mindbender1> you have to stay close
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<mindbender1> mailing lists, I see maintainers always asking if it's ok to move or remove a package
<shevy> uhm
<shevy> mindbender1, they lag behind years ;)
<shevy> if they would at least provide the most recent version within a day or two...
<postmodern> i think more people need to help the ruby teams
<shevy> but that would go against the philosophy of "providing stable programs only"
<postmodern> or submit more bugs for newer ruby packages
<postmodern> i mean, OSX still ships 1.8.7
<mindbender1> postmodern: you're right
<mindbender1> they are beings too
<shevy> haha cool
<shevy> they are even slower than debian :)
<mindbender1> code takes a great deal of effort to maintain
<shevy> yeah
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<shevy> I'd rather have my code in ruby than in shell scripts though
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<bubu\a> lol
<bubu\a> am used to shell scripts and am having to learn ruby at the mo
<bubu\a> ruby koans is cool
<bubu\a> for practical, but not very descriptive!
<ninegrid> a koan seldom is (descriptive)
<bubu\a> lol
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<bubu\a> anyone know any other good resources for anyone who has never done any programming what so ever?
<ninegrid> yes!
<bubu\a> do alot of bash scripting, my perl and python suck.
<bubu\a> now trying to learn ruby :)
<ninegrid> write as much code as possible, and when you are not, model it in your head
<shevy> bubu\a I find both ruby and python muuuuuch easier than shell scripting
<shevy> perl not so much, perl syntax is awful to read, no real improve over shell scripts
<bubu\a> hopefully once I 'click' with ruby it should be good
<bubu\a> still not quite there though
<postmodern> don't get me started on shell comparability...
<shevy> bubu\a work through this here as fast as possible, with "irb" in your terminal - http://pine.fm/LearnToProgram/?Chapter=01 skip the "homework" however, only read the content and try if you can do the same in irb
<shevy> I never fancied the poignant guide much :\
<shevy> it was creative, but confusing
<bubu\a> shevy, ta, will check it out!!!
<ninegrid> shevy: i agree with you, it wasn't even fancy and the jokes weren't even funny
<bubu\a> no but its about my level right now
<bubu\a> lol
<ninegrid> bubu\a: do you understand arithmetic?
<bubu\a> ya - I did maths A-level but its been a while
<bubu\a> :)
<ninegrid> well you understand how to add, subtract, multiply, divide?
<shevy> ninegrid yeah... I do give it that it was creative though, it's nice if there are folks in a community able to be creative. I am absolutely uncreative, and I can't draw at all, not even in photoshop or gimp :<
<ninegrid> shevy: my wife read poignant guide and liked it... so it has a niche, but I don't think walking away from it you learn anything about programming at all
<bubu\a> yes ninegrid
<bubu\a> its more learning ruby syntax at the moment
<banisterfiend> ninegrid: it's supposed to inspire you to learn more about ruby
<ninegrid> if someone is new to semantics and syntax, it takes study to learn the balance of both, if someone has programming experience and understands oo semantics, poignant guide is potentially more useful in learning ruby syntax
<shevy> ninegrid does your wife program?
<banisterfiend> IMO, and it had that effect on me
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<ninegrid> shevy: not really
<shevy> :(
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<ninegrid> yea i know :(
<mindbender1> postmodern: I don't remember where my old gem install came from is ok to just overwrite it by symlinking to my new gem install
<postmodern> mindbender1, i would just re-install the gem using the new ruby
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<postmodern> mindbender1, any executables will be installed into /usr/local/bin
<mindbender1> does /usr/local/bin override /usr/bin too
<postmodern> mindbender1, yep
<postmodern> mindbender1, echo $PATH
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<postmodern> mindbender1, shows the priority of which directory your shell will search for executables
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<mindbender1> postmodern: yeah thanks
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<bubu\a> meh 0 i dont even understand block arguments
<bubu\a> lol
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<ninegrid> bubu\a: as i was saying, if you know arithmetic, and if you know about data types... the basics ints, floats, chars... and you know about basic datastructures, strings (in some languages aren't primitives but a special case of array), arrays, lists, maps/hashes/dictionaries, trees... you can take on any language, but then if you know a bit about OO, like the distinction between class and object, properties/accessors, constructors/in
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<bubu\a> I know none of that ninegrid, never programmed anything in my life
<bubu\a> norm the sys admin / networking / infrastructure guy
<ninegrid> bubu\a: it is a road map for you then
<bubu\a> have a new job starting next week for a ruby house
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<bubu\a> who also use chef instead of puppet
<bubu\a> so thats all ruby
<ninegrid> bubu\a: sounds exciting will you be programming ruby professionally?
<bubu\a> big road map ninegrid :)
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<bubu\a> perhaps yes but not until I know what I'm doing!
<ninegrid> o that is a small roadmap, these concepts aren't something you actually grapple with your entire life ;)
<bubu\a> dev opsy role once I understand ruby
<bubu\a> i have a feeling I will
<bubu\a> not that smart and I can struggle with big bash scripts some times and I class bash scripting as easy as it gets
<ninegrid> in your sys admin, have you ever had the opportunity to parameterize some code with some other code?
<ninegrid> like maybe, using awk
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<bubu\a> yeah I guess
<ninegrid> that is a block
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<bubu\a> hmm
<ninegrid> before i came to ruby, i would call it a higher order function
<bubu\a> ah, think it just clicked
<ninegrid> or if you know sql, maybe you could think of it like sending a stored procedure a string as a parameter that is used inside the stored procedure as SQL code
<bubu\a> yeah gotcha ninegrid
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<bubu\a> :D
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<ninegrid> but i think the HoF analogy is better, since it is an unnamed function (called a "lambda" in other languages)
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<bubu\a> ja
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<bubu\a> a way of passing different parameters to blocks
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<bubu\a> should get it more once start using them
<ninegrid> { |i| doItTo i } == \i doItTo i == (fun i -> doItTo i) ... these are all similar, but ruby gives you more degrees of freedom here since ruby blocks can side effect the world and lambdas cannot
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<bubu\a> okok
<bubu\a> confusing me now :p
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<dekroning> hi
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<ninegrid> bubu\a: maybe you should read the poignant guide's chapter on blocks
<ninegrid> the only way to learn about them is with metaphor, and the only way to learn them is through using them on your own
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<dekroning> i'm a bit confused with Bundler, i'm tryint to wrap a C lib in a ruby extension. Now i'm always confused with .gemspec file, when I want to add the gem 'rake-compile' do I need to add it as gem.add_development_dependency or should I add it to the regular Gemfile ?
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<postmodern> dekroning, looks like development dependency
<postmodern> dekroning, when installed it should run extconf.rb
<postmodern> dekroning, also checkout FFI, no need for compiling
<dekroning> postmodern: and it should be in the .gemspec file right? instead of Gemfile
<postmodern> dekroning, correct
<dekroning> even though the Gemfile is mentioning you shouldn't add gems directly to it, I still see blogs online who are doing it non the less
<dekroning> postmodern: ok thanks
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<mindbender1> is rinari still good for development with ruby on emacs? or is there a newer dev env
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<mindbender1> Sorry but I just love my emacs
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<shevy> mindbender1 hehe
<mindbender1> shevy: :)
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<bubu\a> damn stuggling with ruby koans :(
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<bubu\a> 9/28-
<bubu\a> 280*
<bubu\a> :/
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<mindbender1> how do I recover from a failed rails initialization
<mindbender1> rails project
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<yxhuvud> don't fail in the first place.
<mindbender1> are we in school
<mindbender1> we learn by failing in the first place
<mindbender1> so?
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<mindbender1> is the only option I have to delete the failed initialization or is there a smarter way to recover
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<yxhuvud> start by figuring out why it fails.
<mindbender1> I have fixed the reasons
<yxhuvud> so then it works?
<mindbender1> you don't get my question I guess
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<mindbender1> something like apt-get -f
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<mindbender1> to continue from failure point because it waas requesting for some missing lib
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<yxhuvud> I'd suggest you install all required libraries.
<burgestrand> mindbender1: failed?
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<mindbender1> burgestrand: Gem::RemoteFetcher::FetchError: Errno::ETIMEDOUT: Connection timed out - connect(2) (https://rubygems.org/gems/i18n-0.6.1.gem)
<mindbender1> An error occurred while installing i18n (0.6.1), and Bundler cannot continue.
<mindbender1> Make sure that `gem install i18n -v '0.6.1'` succeeds before bundling.
<mindbender1> which i have done
<mindbender1> any idea
<burgestrand> mindbender1: after creating a new rails project, rails will go into that project and install all the dependencies for you
<burgestrand> mindbender1: that last step is completely optional; just go into your project and run "bundle install"
<burgestrand> mindbender1: it’ll do the same thing as rails did
<burgestrand> mindbender1: this is a command you’ll need to run after adding any kind of library to your project anyway, so it is not out of the ordinary to run this command
<mindbender1> burgestrand: exactly what I wanted to hear
<burgestrand> mindbender1: for future rails-specific questions you’re probably better off in #rubyonrails though
<mindbender1> burgestrand: noted thanks
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<burgestrand> mindbender1: here’s the website for the "bundle" command: http://gembundler.com/ (it’s not really part of rails, but a library/gem that rails uses)
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<mindbender1> burgestrand: thanks
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<Hanmac> burgestrand mindbender1 there is #bundler too
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<mindbender1> Hanmac: perfect thanks
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<zooz> hi
<zooz> what does the following syntax mean: answer ||= []
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<zooz> I am not sure about the two pipes before the equal sign
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<postmodern> zooz, it only assigns [] to answer, if answer is nil or false
<heftig> like answer || answer = []
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<zooz> so if the "answer" array exists it will just add more items to it, is that right?
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<heftig> that line alone doesn't add any items
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<zooz> to be specific, I am looking at the following code: https://github.com/puppetlabs/puppet/blob/master/lib/hiera/backend/puppet_backend.rb#L86
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<Hanmac> heftig & zooz but it does a bit more magic ... when answer is not defined it does create it
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<kapowaz> can anyone recommend good examples of the pattern of user registration that involves use of an activation token? i.e. user registers, gets an email containing a link with a single-use token, user follows that link and is then activated?
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<heftig> kapowaz: token could be a hash of some internal data, like username + time of registration + a (fixed) salt
<heftig> that way you don't need to save the token server-side
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<kapowaz> heftig: yeah, that sounds good. I'm just wondering if there are any other crucial details about how to do this ‘right’ — like just emailing that token as part of the link back to the site is enough?
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<heftig> I think so, but I'm no security expert.
<kapowaz> presumably you'd need to provide both username + token
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<heftig> yes.
<kapowaz> so that you can perform the hash on the username and check if it comes to the same token
<kapowaz> sounds good
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<heftig> just don't make it too predictable
<kapowaz> well it won't matter if there's a private salt too
<kapowaz> (assuming that stays secret)
<heftig> Yeah, I just picked time of registration, as that's commonly saved as well
<kapowaz> also unlikely to be guessable, at least not to any reliable degree of precision.
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<iamjarvo> heftig whats up
<iamjarvo> i implemented 'caching' for the fib method and its way faster
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<shevy> hmm
<shevy> I started to rewrite a project
<shevy> and now I am again wondering why I did that...
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<yankeefan04> \\I am having trouble understanding the initialize method and super keyword, does it just pull the information from the class above it?
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<davidcelis> yes, #super calls the superclass' method
<yankeefan04> and then initialize is just a faster way to define variables for one object versus doing Person.age= x for each variable?
<yankeefan04> doing multiple at once, versus one at a time*
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<elementz> hi all.
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<seanstickle> oy
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<elementz> what is the best way to test if a hash has a key that is a value in a given array? e.g. having an array ary = %w(foo bar baz) how can i test something like that `h.haskey?ary` < thats not possible i know
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<elementz> hm, should i rephrase my question? or is it clear what i would like to do?
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<seanstickle> Want to see if any of the keys in a hash are in the array that you have constructed?
<seanstickle> Yes?
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<seanstickle> foo = {a:1, b:2, c:3}; bar = [:a,:b]; foo.keys & bar
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<seanstickle> foo = {a:1, b:2, c:3}; bar = [:a,:b,:d]; foo.keys & bar
<seanstickle> ^^ probably clearer
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<elementz> seanstickle: thx :)
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<IceDragon> hello, I have a question
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<IceDragon> what would be the C equivalent of ruby's Array#pack function. Or rather how do I pack C datatypes into a ruby string for dumping?
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<Hanmac> IceDragon i dont think it is easy possible, it depends on the C-DataType, i think is the best to turn the elements into an ruby array and call Array#pack with that
<IceDragon> its just ints
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<IceDragon> But I guess I could use your method until I figure it out
<Hanmac> make an array with rb_ary_new and add elements with rb_ary_push and than use rb_funcall(array,rb_intern("pack"),1,rb_str_new("packstr"))
<yankeefan04> are object variables available in classes below original variable?
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<IceDragon> Thanks Hanmac
<Hanmac> yankeefan04 make an pastie from what you mean
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<elementz> seanstickle: going back to your solution, what does the & actually do?
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<seanstickle> elementz: intersection
<elementz> seanstickle: thx
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<RickSchmitty> Anyone good with csv? I'm having troubles converting a simple php script to ruby, the ruby parser claims to have a stray quote - which I cannot see. http://pastebin.com/pKVJyeXY Is there some other setting I'm missing on the ruby side? I'm also able to import the text into excel successfully, so I have to be missing something in the ruby settings...
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<seanstickle> RickSchmitty: please use gist.github.com or pastie.org
<seanstickle> RickSchmitty: pastebin is an eyesore and many people here will refuse to use it
<Hanmac> seantickle but pastiebin has features pastie.org does not have
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<seanstickle> Hanmac: true
<seanstickle> Hanmac: for one, it has the feature of being awful
<tos9> Like only working with JS and free ad with your pastebin.
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<seanstickle> Perhaps other features as well :)
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<Hanmac> seanstickle it has expire feature that the pastie will be deleted automaticly
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<RickSchmitty> seanstickle, Hanmac gist seems like the best for my question anyways, here is updated with individual snippets: https://gist.github.com/4190526
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<RickSchmitty> I want to think that the problem line is "too long" but I noticed in the 1.9.3 docs field_size_limit is nil by default, as in no limit?
<seanstickle> RickSchmitty: that's because you have a stray quote in your data
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<Hanmac> http://<iframe ... are you kidding me?
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<RickSchmitty> i get no choice, its a MLS provider, so archaic
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<seanstickle> RickSchmitty: well, that's going to be a problem then
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<RickSchmitty> where did you spot the stray quote?
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<Hanmac> the tablecell with the iframe is the bad one
<seanstickle> RickSchmitty: after the iframe thing
<seanstickle> width=" etc etc
<RickSchmitty> ah. ugh
<RickSchmitty> thank you
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<rismoney1> how can i write - if var is not a boolean or a symbol do blah
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<Hanmac> rismoney: unless [TrueClass, FalseClass,Symbol].any? {|c| c === obj}
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<rismoney1> HanMac, whats the {|c| c ==obj}
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<RickSchmitty> Hanmac, seanstickle thank you for the help, I switched to reading the file line by line then using CSV.parse_line skipping the crap data for now :)
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<Hanmac> why does noone read my code? ... i used THREE =
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<danneu> [TrueClass, FalseClass, Symbol] & [obj.class]
<danneu> l0l
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<Spaceghostc2c> initializeIKR
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<Spaceghostc2c> Lol.
<Spaceghostc2c> Hanmac: That's a pretty hideous way to handle that. :D
<danneu> ha
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<danneu> Spaceghostc2c: what's your idea
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<Spaceghostc2c> danneu: obj.is_a? TrueClass || FalseClass || Symbol
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<Spaceghostc2c> Could maybe get prettier.
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<atmosx> hi
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<danneu> Spaceghostc2c: oh, duh. haven't done a type check in forever
<Spaceghostc2c> danneu: That was the whole question. :(
<Spaceghostc2c> Mine breaks though.
<Spaceghostc2c> Wait, no it doesn't.
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<danneu> i meant .is_a? doesn't even come into mind for me
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<apeiros_> Spaceghostc2c: yours may not break, but it doesn't do what you want it to do
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<apeiros_> obj.is_a? TrueClass || FalseClass || Symbol --> TrueClass || FalseClass || Symbol == TrueClass
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<apeiros_> so basically you're just doing: obj.is_a? TrueClass
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<canton7> [TrueClass, FalseClass, Symbol].any{ |x| obj.is_a?(x) }, or [TrueClass, FalseClass, Symbol].include?(obj.class)
<Spaceghostc2c> apeiros_: unless [TrueClass, FalseClass,Symbol].any? {|c| c === obj} # Is htis better?
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<canton7> unless + #any? is the same as if + #none?
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<apeiros_> Spaceghostc2c: that one works. don't know whether you want unless or if (the last one didn't include that part)
<Spaceghostc2c> Hm.
<Spaceghostc2c> Hanmac: You win this time.
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<rismoney1> I want to see if @resource[:name] has multiple words in it, and if it does make a new var where the items only contain the first word. Anyone know how i can achieve that?
<rismoney1> not multiple items.
<apeiros_> rismoney1: first you have to define "word"
<apeiros_> but: str[/\p{Word}+/] will extract the first substring containing only word characters
<rismoney1> I basically want to discard everything after from the first space onward.
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<apeiros_> then str[/\A\S*/]
<apeiros_> or str[/\A[^ ]*/] (this is strictly space, above is any whitespace)
<rismoney1> So if there are two items in @resource:name ["this is a test","hey wassup"] I want a new var = ["this","hey"]
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<rismoney1> strictly space
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<apeiros_> see Array#map for that
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<rismoney1> actually i think the regex will do what i need, simpler is better.
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<rismoney1> tyvm
* rismoney1 sometimes overthinks
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<pdtpatrick> Question - how can i improve this? I'm mainly concerned with lines 19-26. Thanks
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<apeiros_> pdtpatrick: weird code you're having there…
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<lunks> Hey! I'd like to make my irb listen to anything from a UNIX socket and eval it. I couldn't find a lot of info on the interwebs. Could anyone provide me with any help?
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<pdtpatrick> apeiros_: I know. In the actual code im making a LDAP call which returns a string and then each string wouldh ave a parent until you finally get _none. Anyway, I think I've figured how to optimize it. Thanks
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<apeiros_> pdtpatrick: you probably want inject then
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<apeiros_> you want all ancestors?
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<cub949> I'm trying to use user input (e.g gets) in a regexp pattern but I dunno how to insert it properly http://pastebin.com/mvXztW8b
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<cub949> I've tried creating a regexp object but I'm obviously doing it wrong
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<cub949> oh nevermind /#{pattern}.*/ works
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<maetthew> Can someone please help me with an error message i'm getting that i don't understand
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<maetthew> code is first line and error message below
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<seanstickle> What's with all this use of paste bin?
<seanstickle> gist.github.org people!
<maetthew> what's wrong with pastebin? :p
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<maetthew> (this is datamapper btw)
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<seanstickle> Well, if you post to gist.github.com, I'm happy to take a look
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<maetthew> seanstickle, https://gist.github.com/4191557 :P
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<seanstickle> DataMapper 1.2?
<jrajav> seanstickle: Are you a paste-ist? Not cool, man
<seanstickle> jrajav: I am. And proud of it!
<seanstickle> Anti-bin-ite, right here
<seanstickle> maetthew: DataMapper 1.2?
<jrajav> Just because some pastebins paste's aren't forkable git repos is no reason to discriminate
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<jrajav> Well okay maybe it is
<maetthew> seanstickle, yes
<seanstickle> maetthew: seen that?
<maetthew> hmm nope
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<maetthew> DataMapper.finalize hmm
<cub949> Does anyone know why this regexp statement isn't matching all the other words that start with "co"? http://rubular.com/r/OG6m5Qr0Yr
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<jrajav> cub949: Because ^ anchors it to the start of the string
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<maetthew> seanstickle, Thanks that "fixed" it. Though nothing is getting added into the database
<cub949> thanks
<maetthew> seanstickle, I made a new gist https://gist.github.com/4191607. Not sure why it's not saving.
<maetthew> The important part is the if statement on line 19
<maetthew> it does output "SAVED" though
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<sorbo_> +1 for rubular
<sorbo_> that site has saved my regular expression bacon several times
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<rking> What the heck?? File.join %w(a b) on Windows returns 'a/b'. What the heck is the point, then, of even using File.join ?
<Spaceghostc2c> !rubular
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<Spaceghostc2c> Oh damn, no helpa
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<jsilver> rking: "/" and "\" different but mean same thing on Win32
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<jsilver> and UNIX
<jsilver> File.join is for crossplatformness
<jsilver> sounds like a bug
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<rking> jsilver: I don't think so
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<jsilver> it should be "a\b"
<rking> I think the reality is that '/' works everywhere stupid '\' would, so there's no point.
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<jsilver> right.. "backslash" should have never been used in the first place
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<jsilver> a great example of microsoft failing to invent anything by diverging from the POSIX standard
<jsilver> and just creating what is now, an ancient archaic graveyard of confusion thats even on our precious ruby
<jsilver> in File#join
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<jsilver> has '/ always worked in windows