Topic for #ruby is now Ruby programming language || ruby-lang.org || RUBY SUMMER OF CODE! rubysoc.org/ || Paste >3 lines of text in http://pastie.org || Para a nossa audiencia em portugues http://ruby-br.org/
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<banisterfiend> shevy: if u troll him again im going to bet yo candy ass
<shevy> banisterfiend offer him my deepest condolences please
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<banisterfiend> shevy: u need to apologize personally markus!
<shevy> banisterfiend but I don't know him!
<shevy> where is he
<shevy> is he on IRC?
<banisterfiend> shevy: yeah on #zen-cms
<shevy> hmm that channel has a '-'
<danryan> banisterfiend: ok thanks, my understanding is solid then. I tried it previously using your example, but I get a nomethodError because the block is nil: https://gist.github.com/2004181#file_test
<danryan> just updated the gist to show the #action definition
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<banisterfiend> shevy: join #zen-cms
<banisterfiend> shevy: you can apologize in german btw, he speaks it fluently
<banisterfiend> shevy: hehe can u translate into english? http://www.youtube.com/watch?v=v0FVm_H_D18
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<danryan> banisterfiend: huzzah! It's working: https://gist.github.com/2004181#file_working
<banisterfiend> danryan: cool, congrats
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<danryan> the block var in my previous examples were indeed nil because I was mistakenly defining a method that took a block, when indeed I wanted to define a method that called the block passed by self.action
<danryan> banisterfiend: thanks for the shove in the right mental direction :)
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<iamjarvo> this is pretty awesome http://rubyfiddle.com/
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<banisterfiend> iamjarvo: what's awesomea bouti t
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<iamjarvo> banisterfiend: i guess one could use irb. but sometimes im on a mobile device and want to try a snippeted
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<iamjarvo> just a nice addition to the toolset
<banisterfiend> iamjarvo: there's a tonne of sites like that: tryruby, ideone (i think it's called) and a number of others
<banisterfiend> iamjarvo: it's not a particularly new idea ;)
<Boohbah> puts IO.readlines('h').grep /#{IO.readlines's'}/
<Boohbah> can you make it shorter?
<iamjarvo> banisterfiend: ahh i see,
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<felipe_Brz> can I use class_eval to initialize an insatnce variable?
<felipe_Brz> instance*
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<Boohbah> felipe_Brz: yes, but why not open the class and define methods directly?
<Boohbah> oh errr instance variable... no i don't think so
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<Boohbah> nice
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<russfrank> hi, does anyone know of somewhere I can find the minimum version of ruby that vim would need to be compiled against? i'm trying to compile vim with ruby support and seeing this https://gist.github.com/275dbc17e6c012f4258a
<russfrank> ruby version is 1.8.5 (it's EL5)
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<td123> russfrank: you should probably look into reusing the package code used to build the EL5 vim
<td123> just because it uses such old versions
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<russfrank> td123: that version of vim doesn't have other stuff I want, haha
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<russfrank> (namely the necessary matching constructs for jslint vim integration)
<russfrank> so I figured I'd just upgrade vim as a whole, but this appears to be a version mismatch as to what the ruby-vim integration was written for
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<td123> russfrank: which vim is this?
<td123> seems, debian uses vim 7.1 with ruby 1.8.7
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<russfrank> td123: I'm trying to build vim 7.3 against ruby 1.8.5
<russfrank> td123: centos 5
<td123> hmm, ya, I probably would try ruby 1.8.7 at least if you want to use vim 7.3
<td123> in sid http://packages.debian.org/sid/vim-gtk deb uses rb 1.8.7 with vim 7.3 so there's a good chance that'll work :)
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<td123> although they also patch a lot so I'm not certain
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<cloudgeek> how i can see the output of this ruby programm
<cloudgeek> i just ruby string.rb
<cloudgeek> check a string as palidrome with this code
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<td123> you need to use that function
<cloudgeek> i tried palindrome?("papa")
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<cloudgeek> it is not working
<cloudgeek> td123: how to do that , i am new to ruby
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<td123> well, your code doens't print anything out when the string isn't a palindrome
<cloudgeek> td123: i making some chnage in code
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<cloudgeek> td123: http://pastie.org/3553042
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<cloudgeek> now also not working
<cloudgeek> td123: hey i don't how get output with this progamm , can help ,how can i get output
<cloudgeek> means what exactly need to write in bash
<td123> cloudgeek: http://codepad.org/TFTkT37T
<td123> works for me*
<td123> you shouldn't need to write anything in bash.. this is ruby (unless you want to write a shell script to pass in values which is kind of weird)
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<cloudgeek> td123:thanks
<cloudgeek> td123: i am not writing the 9th line in code
<cloudgeek> td123: now i got it
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<allaire> How come in ruby it's possible to call outside methods directly in the class, and not in any methods, like that: http://pastie.org/private/ggdydsdvglvguvv9ttbxvg
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<shadoi> It's possible, they just have to be a class method
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<shadoi> or maybe I don't get your questio.
<shadoi> +n
<allaire> Well, in C for exemple, I can't simply drop a line in my class calling another class's method
<allaire> I don't know if it makes sense?
<shadoi> You're not programming in C. :)
<allaire> Yeah I know that, but I'm wondering how it's possible, or what's the logic behind it
<allaire> in my pastie, I'm calling an init method form a gem class
<allaire> I just dropped it in my class, not even in a constructor, and it worked, how come?
<shadoi> why not?
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<shadoi> The class is defined, why shouldn't you be able to call it's class methods?
<allaire> I know I can call the Parse.init method, but how come I can call it directly in the class, in no methods
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<shadoi> Because all classes are just an instance of Class
<allaire> lol...
<allaire> I see
<allaire> when they say ruby is 100% object, it's trully 100% object, hehe
<shadoi> It's a very common idiom to call class methods in the body, a lot of DSLs work this way.
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<allaire> DSLs?
<shadoi> domain specific languages
<Boohbah> not to be confused with digital subscriber lines
<shadoi> hehe right
<allaire> oh
<allaire> but ruby isn't a DSL, so it's weird that we can do that :P
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<Boohbah> ruby makes it easy to write DSLs
<Boohbah> or so i've heard
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<seanstickle> Almost as easy as Haskell or SML
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<A124> Anyone knows a good Ruby framework for flatfile databases?
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<seanstickle> CSV
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<stephenjudkins> A124: what do you mean "flatfile databases"?
<A124> stephenjudkins: Flatfile storage.
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<stephenjudkins> i have no idea what that means
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<A124> stephenjudkins: Or to be specific, I would like to store tens of thousands of small images of few kB each.
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<kah> this is more for Ruby on Rails but no one is responding there. .. can someone explain this to me a different way? http://pastie.org/3553200 specifically "This provides the Test::Unit::TestCase class inherited from on the next line
<stephenjudkins> and access them how?
<A124> Doesn't has to be flatfile.
<stephenjudkins> by key?
<stephenjudkins> is random access important?
<A124> Through Ruby, by keay, yes.
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<A124> stephenjudkins: Access depends, can be both. The files will mostly not even change.
<allaire> shadoi: Last question, can I only call class methods directly in an class, or I can call praticaly everything, just as in a method
<stephenjudkins> leveldb is very fast and efficient
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<stephenjudkins> also, sqlite could probably do the job fine
<A124> stephenjudkins: Thank you, will have a look. Ether you search better, or you already know them, it seems :)
<shadoi> allaire: it's bad form to instantiate stuff and call instance methods I'd say. otherwise, yeah.
<stephenjudkins> A124: also consider just storing in your filesystem
<stephenjudkins> i think there are some filesystems that do it really efficiently
<shadoi> A124: I highly recommend kyotocabinet
<A124> stephenjudkins: Can you give me any hint? I already stored them in a FS, but the size overhead and speed is not decent.
<shadoi> it has storage engines for most scenarios
<A124> stephenjudkins: Oh. Umm.. I heard of kyoto, not tried though, Thank you.
<stephenjudkins> A124: no, i can't remember now... i think XFS was it? i'm really not sure
<stephenjudkins> good luck
<A124> Yup, xfs is possible, as xfs was used for newsgroup servers.
<A124> Thank you a lot ^^
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<A124> shadoi: Thanks for link to youtoo, sir.
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<Boohbah> hi rohit :)
<rohit> Boohbah: Hey
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<MauvePussy> so test {:lol => 'wat'} would call test with a weird block, but test :lol => 'wat' calls test with an hash (I don't know how they call it in ruby)?
<MauvePussy> would it be the same as test({:lol => 'wat'})
<banister_> MauvePussy: Yeah
<MauvePussy> ty
<MauvePussy> is it dangerous to start using rails without knowing ruby that much?
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<banister_> MauvePussy: not dangerous but perhaps more confusing
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<tonesfrommars> MauvePussy: you will learn ruby pretty fast that way out of necessity (which is what I'm doing right now) :-)
<tonesfrommars> Check this out, it's fantastic: http://rubykoans.com/
<banister_> tonesfrommars: either that, or you join #ruby even 2 years after you've been a 'rails programmer' still asking basic ruby questions (as is common here)
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<tonesfrommars> banister_: I bet. Seems like all the helpers in rails makes it pretty easy to rush headlong without really getting a grip on the underpinnings of the language (which can be slippery from what I can tell)
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<banister_> KL-7: good afternoon
<KL-7> banister_: hi
<banister_> KL-7: do you use stack_explorer ?
<KL-7> banister_: I was going to, but didn't have good use case for it recently.
<banister_> KL-7: ah ok np
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<tolland> hi, i am going have to spend the next few weeks digging about in a ruby project for a client, its a plugin for logstash
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<tolland> is there a good ide ?
<tolland> whats the eclipse for ruby?
<tolland> or is it literally eclipse for ruby?
<banisterfiend> tolland: most ruby programmers dont use ides
<ezkl> tolland: RubyMine is NetBeans/IntelliJ crap for Ruby. It sucks.
<ezkl> There are stories about RubyMine 4's speed. They are lies spread by charlatans.
<ezkl> and marketing dudes
<banisterfiend> hehe
<cool> lol
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<banisterfiend> cool: very ambitious nickname
<banisterfiend> cool: can u live up to it
<cool> Yeah, I am cool :P
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<banisterfiend> cool: like fonzy?
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<banisterfiend> ezkl: Templin?
<ezkl> banisterfiend: Yessir
<banisterfiend> ezkl: ah, i just github'd u
<banisterfiend> :)
<cool> banisterfiend, I am cool like cool (recursion FTW! :P)
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<davidcelis> RubyMine -= 1
<banisterfiend> davidcelis: what's wrong with it, dave?
<davidcelis> its like NetBeans/IntelliJ crap for Ruby
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<davidcelis> also the resource usage
<davidcelis> mother of god, the resource usage
<davidcelis> it just sucks up all your RAM until there's none left
<davidcelis> none left for precious
<banisterfiend> davidcelis: who's precious
<banisterfiend> a buddy?
<banisterfiend> oh, that fat black chick
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<banisterfiend> didnt know she coded ruby
<davidcelis> my precioussss
<davidcelis> it takes the preciouses
<davidcelis> the precious RAMs
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<Vadim> guys i am learning ruby.... can somebody help.... why this code didnt work? http://pastebin.com/X63TLmxx
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<Vadim> i wanna encode arrays element
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<matti> Eh.
<matti> :)
<banister_> Vadim: too bad, you're not allowed
<matti> Haha
<matti> banister_: :)
<matti> Vadim: This is like Ruby 101 "go figure read about arrays" question :)
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<matti> Vadim: Would that do? https://gist.github.com/2005964
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<WhereIsMySpoon> hey, im just starting to learn ruby as an on the side thing and im doing a few exercises
<matti> WhereIsMySpoon: :)
<WhereIsMySpoon> http://pastie.org/3554747 why doesnt this work? and can someone tell me how to do it properly?
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<matti> WhereIsMySpoon: Try Ruby Koans http://rubykoans.com/
<WhereIsMySpoon> matti, im following a tutorial
<matti> WhereIsMySpoon: Tutorials are too slow ;p
<matti> WhereIsMySpoon: And there is no spoon :P
<matti> ;D
<WhereIsMySpoon> >.<
<WhereIsMySpoon> can you please help me :P
<matti> [ Could not resist ;p ]
<matti> WhereIsMySpoon: Sure, ask the question kind Sir :)
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<WhereIsMySpoon> i did
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<matti> Oh, sorry ;]
<WhereIsMySpoon> also, im pretty sure this is the friendliest programming channel to date
<matti> Haha :)
<WhereIsMySpoon> i havent been eaten yet by hordes of elitist jerks :P
<banister_> WhereIsMySpoon: #C is more friendly
<matti> Ruby community is awesome :)
<WhereIsMySpoon> banister_, really? i doubt it
<matti> banister_: NO WAI
<WhereIsMySpoon> xD
<WhereIsMySpoon> i tried ##c++ the other day
<WhereIsMySpoon> that was a mistake
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<banister_> hehe #C++ is friendly compared to #C ;)
<WhereIsMySpoon> i could believe it
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<WhereIsMySpoon> i quite like what i see of ruby so far
<WhereIsMySpoon> it seems very compact
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<WhereIsMySpoon> how does its performance fare compared to python/java/c++?
<matti> WhereIsMySpoon: "splitstuff = #{stuff.split(","}" -- syntax error.
<WhereIsMySpoon> i got that far :)
<WhereIsMySpoon> irb told me so
<Vadim> <matti> yes... thx you...
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<WhereIsMySpoon> matti, any idea on how to fix it? :P
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<matti> Vadim: Welcome :)
<matti> WhereIsMySpoon: Add missing ')' there.
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<matti> WhereIsMySpoon: A variation: https://gist.github.com/2005993
<WhereIsMySpoon> er
<matti> WhereIsMySpoon: #{} will cause variable interporation / execute code inside.
<WhereIsMySpoon> matti, i made a syntax error in typing it to pastie
<WhereIsMySpoon> one sec
<matti> Oh.
<matti> Haha
<matti> WhereIsMySpoon: Check my gist.
<WhereIsMySpoon> refresh it
<matti> Oh, sorry :)
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<matti> WhereIsMySpoon: You do not need #{} around split there.
<WhereIsMySpoon> ah
<WhereIsMySpoon> ok
<WhereIsMySpoon> yay
<WhereIsMySpoon> :3
<matti> WhereIsMySpoon: https://gist.github.com/2005993 -- variation :)
<WhereIsMySpoon> i saw iot
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<WhereIsMySpoon> it
<matti> WhereIsMySpoon: No, get "dudes" in order.
<WhereIsMySpoon> :)
<WhereIsMySpoon> sorry matti /
<WhereIsMySpoon> ?
<WhereIsMySpoon> what you mean
<matti> WhereIsMySpoon: Since the nature of Hash is that is not ordered (at least not in 1.8.x), you need to retrieve keys, and sort them :)
<WhereIsMySpoon> they came out sorted
<matti> WhereIsMySpoon: So you print dude1 then dude2 ...
<matti> WhereIsMySpoon: Oh, I am using 1.8 :)
<matti> ;p
<matti> I have to stop ;p
<WhereIsMySpoon> how do i check what im using
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<matti> WhereIsMySpoon: ruby -v
<WhereIsMySpoon> ah nvm
<WhereIsMySpoon> im 1.9.2
<matti> :)
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<WhereIsMySpoon> i hope ruby will be more kind to my brain than c++ was
<WhereIsMySpoon> i tried for couple months to learn cpp after knowing java and python
<WhereIsMySpoon> was really hard
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<matti> Was it?
<matti> ;]
<matti> Go C man!
<WhereIsMySpoon> no
<matti> Embrace malloc and curly braces :)
<WhereIsMySpoon> im not learning C
<WhereIsMySpoon> waste of my time
<matti> Hehe
<WhereIsMySpoon> nobody programs in C
<WhereIsMySpoon> :p
<matti> I do!
<matti> :<
<WhereIsMySpoon> nah people do
<Vadim> and students
<WhereIsMySpoon> its just not what i want to do
<matti> Vadim: And kernel hackers ;)
<matti> WhereIsMySpoon: AYe aye
<matti> :)
* WhereIsMySpoon hacks matti's kernel
<WhereIsMySpoon> *with an axe
<WhereIsMySpoon> :p
<WhereIsMySpoon> thanks anyhow matti :)
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<jlebrech> is there a guard script to open newly created files?
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<WhereIsMySpoon> matti, how would i replace the stuff entries in the hash? if i just go through stuff[0], stuff[1] etc that counts the spaces and commas too, i just want to go over them via comma and replace them
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<WhereIsMySpoon> anyone? :P
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<matti> WhereIsMySpoon: You mean, the key or the value under the key?
<WhereIsMySpoon> the values
<WhereIsMySpoon> like '1, 2, 3'
<WhereIsMySpoon> how would i replace them with '4, 6, 4' or 'banana, orange, tomato'
<WhereIsMySpoon> er wait
<WhereIsMySpoon> no
<WhereIsMySpoon> how would i replace them all with banana
<WhereIsMySpoon> so i have 'banana, banana, banana
<WhereIsMySpoon> '
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<WhereIsMySpoon> argh no that isnt it either lol
<WhereIsMySpoon> sorry start again
<WhereIsMySpoon> i have a hash
<WhereIsMySpoon> dudes = { 'dude1' => '1,2,3', 'dude2' => '2,3,4', 'dude3' => '3,4,5,6' }
<WhereIsMySpoon> i want to replace every 3 with banana
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<WhereIsMySpoon> and make it a permanent change
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<aiurea> Hi.
<aiurea> I have a string '"Pachet XX",', and I'm trying to parse it with CSV in ruby 1.9.3. I'm getting Illegal quoting in line 1.
<aiurea> CSV.parse(s) fails with illegal quoting, CSV.parse('"Pachet XX",') works
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<aiurea> oh, it's even weirder. I'm reading the string from a file. With string = File.read('f'); I get string.size = 13. With string = '"Pachet XX",'; I get string.size = 12
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<matled> aiurea: so? take a look at the string and see what makes the difference
<aiurea> f[0] => "
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<aiurea> matled: it's an empty character
<aiurea> f[0] => ""
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<aiurea> the file does not have an trailing whitespace
<aiurea> oh wait, actually it does, but it's not visible in vim.
<robertjpayne> is there an easy way to split a string every X characters? So I have lines each of 64 chars?
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<skim1776> hello there, how can I store class constants? in class variables?
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<banisterfiend> skim1776: who cares
<skim1776> banisterfiend, what do you mean who cares?
<banisterfiend> well i personally dont care :))
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<skim1776> banisterfiend, does it seem right to you - @@SOME_CLASS_CONSTANT
<banisterfiend> skim1776: seems pretty weird tbh
<skim1776> banisterfiend, for me too
<skim1776> that's why I'm here
<banisterfiend> why nto just use SOME_CLASS_CONSTANT
<banisterfiend> without the @@
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<skim1776> banisterfiend, but then it would be created for all instances of the class and it's wrong since the variable belongs to the class
<banisterfiend> skim1776: then just store it in a class ivar, @class_blah
<skim1776> banisterfiend, @class_blah is also an instance variable - it's created for all the instances of the class
<banisterfiend> skim1776: no, it's only created for the class if u define it outside an instance method
<matled> skim1776: if you have a constant within a class there is only one object, not one per instance. the assignment is executed once when the class is defined.
<skim1776> matled, you mean a class variable(@@class_variable) or just a simple constant(SOME_CONSTANT)?
<matled> skim1776: class Foo; BAR = whatever; end
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<skim1776> matled, I got it, thanks
<Jck_true> in a nitpicking mood right now - (1..100).each do |x| - is there no way to make that count backwards?
<banisterfiend> Jck_true: (1..100).reverse_each
<Jck_true> ohhh reverse.each
<Jck_true> Thanks :D
<banisterfiend> no that wont work
<banisterfiend> oh yes it will
<Jck_true> Hehe ruby is like a showoff in language goodies haha :D
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<skim1776> Jck_true, there's also downto method 100.downto(1) do |x| ...
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<Jck_true> skim1776: Even more sexy
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<WhereIsMySpoon> i have a hash
<WhereIsMySpoon> <WhereIsMySpoon> dudes = { 'dude1' => '1,2,3', 'dude2' => '2,3,4', 'dude3' => '3,4,5,6' }
<WhereIsMySpoon> <WhereIsMySpoon> i want to replace every 3 with banana and make the change permanent
<WhereIsMySpoon> how do i do it
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<matti> WhereIsMySpoon: Isn't the tutorial showing that?
<WhereIsMySpoon> not the one im following
<shevy> WhereIsMySpoon several ways. the easiest is to iterate through each pair and build a new hash
<heftig> dudes.each { |k,v| v.gsub!('3','banana') }
<WhereIsMySpoon> the exercise says to change the data struct
<matti> :>
<WhereIsMySpoon> ok cool :)
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<matti> WhereIsMySpoon: You can also do this in a little bit more manual way: get value, split on comma, replace 3rd item in the resulting array, put banana there, and join again, and put values back into the hash under a key.
<WhereIsMySpoon> matti/heftig i want to do it with dudes.collect do | k,v |
<WhereIsMySpoon> so that it prints it all out after im done
<banisterfiend> WhereIsMySpoon: are you in 1.9 or 1.8?
<WhereIsMySpoon> 1.9
<matti> WhereIsMySpoon: Get Learn Ruby the Hard Way, seriously.
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<banisterfiend> WhereIsMySpoon: dudes.collect { |k, v| v == 3 ? 'banana' : v }
<banisterfiend> no
<banisterfiend> u get the point
<banisterfiend> hmm
<WhereIsMySpoon> cool
<WhereIsMySpoon> yea i got it
<banisterfiend> maybe collect doesnt return a hash in 1.9 im not sure
<WhereIsMySpoon> dudes.collect do | k,v |
<WhereIsMySpoon> v == 3 ? 'banana' : v
<WhereIsMySpoon> end # of do
<banisterfiend> no it doesnt
<banisterfiend> sorry
<shevy> great comment
<banisterfiend> you have to do boring stuff
<WhereIsMySpoon> prints this
<WhereIsMySpoon> => ["1,2,banana", "2,banana,4", "banana,4,5,6"]
<WhereIsMySpoon> which is what i wanted
<banisterfiend> Yeah
<banisterfiend> i thought u wanted a hash?
<matti> ;D
<shevy> lol
<WhereIsMySpoon> hm
<WhereIsMySpoon> lol
<WhereIsMySpoon> thats an array
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<dagobah> Easiest way to "[[:bob,:fred,:wilma,:betty]]" into an array without eval?
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<shevy> WhereIsMySpoon, but you already have the modified hash from heftig
<banisterfiend> dagobah: jesus christ
<shevy> why dont you simply print it out
<banisterfiend> dagobah: yuo were here asking this *exact* same queston lik 2-3 months ago
<banisterfiend> dagobah: are you insane?
<matti> LOL
<WhereIsMySpoon> lol
<matti> banisterfiend: :)
<WhereIsMySpoon> he's secret troll
<WhereIsMySpoon> ;)
<shevy> dagobah build your array and split the string on ','
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<shevy> what an odd nick he has got
<WhereIsMySpoon> what are most people using? 1.8 or 1.9
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<banisterfiend> WhereIsMySpoon: Hash[dudes.map { |k, v| [k, v.gsub(/3/, "banana")] }]
<shevy> WhereIsMySpoon 1.8 of course
<WhereIsMySpoon> no of course about it :) im new
<WhereIsMySpoon> but ok
<WhereIsMySpoon> so should i revert to 1.8?
<WhereIsMySpoon> or what
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<banisterfiend> WhereIsMySpoon: 1.9 is best
<WhereIsMySpoon> ok
<shevy> what do you mean with revert
<shevy> it's very little work to make things work on both
<WhereIsMySpoon> stop using 1.9
<WhereIsMySpoon> i have no idea shevy
<WhereIsMySpoon> i started yesterday
<jlebrech> i'm trying to resist saying "java don't scale" at work
<shevy> no your question is odd, make it work on both versions man
<robert_> morning, shevy :D
<shevy> hai robert_ :D
<robert_> hai :D
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<daniel`> I’m using Rake to run my tests, and the 5 lines of output Rake prints when a test fails ("rake aborted!", "Command failed ...", "", "Tasks: TOP => ...", "(See full trace...") annoys me; any idea how to suppress some of that? (neither --quiet nor --silent affect it)
<unwitting> I'm not sure about the Ruby best practice, can anyone give me some opinions on my simple Navigation helper, http://is.gd/VpHrVE
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<shevy> unwitting seems simple enough isn't it?
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<WhereIsMySpoon> is there a good ide for ruby?
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<apeiros_> WhereIsMySpoon: most people prefer a good text editor
<apeiros_> but there's rubymine, netbeans and probably a couple of others
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<apeiros_> rubymine looks nice, but is a resource-hog and occasionally quite a bit laggy (the latter being the main reason that I don't use it)
<shevy> WhereIsMySpoon the only real IDE for ruby that will work is the human brain
<WhereIsMySpoon> ah theres a netbeans plugin?
<shevy> WhereIsMySpoon, just ask apeiros_ what he is using
<skim1776> shevy, and you, which text editor do you use?
<apeiros_> WhereIsMySpoon: afaik there's a ruby/rails specific netbeans edition
<apeiros_> not just a plugin
<WhereIsMySpoon> oh i see
<unwitting> shevy: yeah I guess so, I thought maybe there was some flaws in the code. Or a different approach where I pass the Navigation instance as an argument to the Item.
<undersc0re> WhereIsMySpoon: Aptana is a pretty good idea
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<shevy> skim1776 bluefish mostly, sometimes vim
<WhereIsMySpoon> undersc0re, whats the difference between aptana and netbeans in terms of featuers
<shevy> I still want a ruby editor written in ruby and independent of java :(
<seoaqua> is it possible to get several elements from a hash at one time?
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<apeiros_> seoaqua: see Hash#values_at
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<apeiros_> also, learning core api by heart is a good idea IMO
<undersc0re> WhereIsMySpoon: pretty sure NetBeans dropped Ruby support
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<OpenJuicer> Hi everyone!
<WhereIsMySpoon> undersc0re, i see it did but some group continued it
<skim1776> apeiros, learning all the API? sounds impossible
<OpenJuicer> I have problem using gem with rbenv by default
<OpenJuicer> it didn't work
<apeiros_> skim1776: core isn't that big
<apeiros_> skim1776: you know a dozen times more english words
<WhereIsMySpoon> wait hang on
<WhereIsMySpoon> aptana looks just like eclipse
<skim1776> apeiros_, you're right
<apeiros_> skim1776: also, most of it is pretty mnemonic
<undersc0re> WhereIsMySpoon: it's based off of eclipse
<skim1776> apeiros, also, implementing all design patterns in ruby would be cool
<WhereIsMySpoon> undersc0re, is it as slow?
<undersc0re> i don't think it is
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<shevy> hey
<shevy> where java is inside, slowness is unavoidable
<shevy> skim1776 80% of the API is english more or less. .include? .has_*? .exist? and so on
<shevy> it's more like "hello mister hash, do you have this element?"
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<seoaqua> apeiros_, ok
<shevy> or "good old friend file, please tell me whether I exist or not?"
<apeiros_> shevy: actually, that's not quite true
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<WhereIsMySpoon> shevy, http://arcadia.rubyforge.org/ ?
<shevy> WhereIsMySpoon hmm
<shevy> I dunno what was with it last time I tried it
<shevy> lemme try again :D
<OpenJuicer> I got following error when updating gem with rbenv
<seoaqua> apeiros_, i want any several elements ,just the same as ' 10.times {var << hash.shift}
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<Scorchin> Is there any way to get around having 'include Logging' for all classes that I want to expose some module methods to? In this case for a globally configurable Ruby Logger. Example code: https://gist.github.com/2d32eee3f45840ab5a27
<apeiros_> seoaqua: you mean you want the first N key/value pairs?
<Jck_true> Why am i getting an error on "dt = Date.new(year,month,1)" Saying it's an uninitialized constant?
<Jck_true> Oh because i haven't included the lib
<Jck_true> my bad
<WhereIsMySpoon> :D
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<WhereIsMySpoon> hm
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<WhereIsMySpoon> when i run arcadia it says *** LOAD ERROR ***
<WhereIsMySpoon> ----------------------------------------------
<WhereIsMySpoon> Arcadia require ruby-tk extension
<WhereIsMySpoon> and tcl/tk run-time
<WhereIsMySpoon> you must install before run ..
<WhereIsMySpoon> but i have tk and tcl
<WhereIsMySpoon> what gives
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<WhereIsMySpoon> oh wait nvm
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<WhereIsMySpoon> hm nope still same error
<WhereIsMySpoon> D:
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<shevy> WhereIsMySpoon exactly my experience too
<shevy> tcl and tk should die
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<WhereIsMySpoon> lol
<WhereIsMySpoon> why so shevy
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<workmad3> WhereIsMySpoon: because they're ancient, arcane and require blood sacrifice to get working?
<WhereIsMySpoon> lol
<WhereIsMySpoon> i see
<WhereIsMySpoon> well
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<workmad3> are you just wanting something for playing with GUI stuff in ruby? if so, I can recommend a variant of shoes :)
<WhereIsMySpoon> workmad3, no i want an ide for ruby
<workmad3> WhereIsMySpoon: oh... aptana studio 3 has some good support, or if you're willing to pay, RubyMine
<WhereIsMySpoon> workmad3, aptana looks too much like eclipse for my taste =/
<workmad3> or create your own IDE-esque environment using Vim or emacs, or consider Sublime Text 2
<shevy> workmad3 uses vim :D
<WhereIsMySpoon> i am not willing to pay
<WhereIsMySpoon> ew
<workmad3> WhereIsMySpoon: that would be because it *is* eclipse ;)
<WhereIsMySpoon> i aint using vim or emacs
<WhereIsMySpoon> those things are the devil
<shevy> yeah
<shevy> there are not many other alternatives though
<workmad3> vim is good, once you've gotten it customised and learnt the basics
<WhereIsMySpoon> nope
<WhereIsMySpoon> not happening
<WhereIsMySpoon> :p
<undersc0re> I use QVim!
<shevy> for the next 50 years there will be a "vim vs. emacs" war... but no alternative in this
<workmad3> WhereIsMySpoon: your choice... I was just giving you options ;)
<shevy> it's not like ... "vim vs. emacs vs. eclipse"
<WhereIsMySpoon> hehe no worries workmad3
<workmad3> you could look at netbeans, not sure what the state of play with ruby integration is there
<skim1776> I'm using vim but I'm in doubts after listening to the rubyrogues podcast on text editors and ides
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<workmad3> skim1776: are you happy, efficient and comfortable with vim?
<skim1776> workmad3, I don't know, I'm not using it on 100%, still learning
<workmad3> skim1776: yeah, that's true with vim... I'm still learning it... I'm more efficient with it than I ever was with aptana or rubymine though :)
<workmad3> (I've only been using it for a paltry 18 months though)
<maasha> vim <3
<skim1776> workmad3, have you tried emacs?
<apeiros_> ed! vim! vi! cat! nano!
<maasha> vimtutor and 10 minutes after you are flying free.
<workmad3> skim1776: I wish I could cauterize that section of my memory out of my brain... but yes, I did use emacs once
<maasha> emacs and you are stuck in a tar pit with the dinosaurs (flame bait)
<workmad3> I wrote a presentation using emacs and latex.... never again
<maasha> workmad3: hehehehe
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<skim1776> workmad3, have you used it for a while?
<maasha> presentations is like the one place where you actually want WYSIWYG
<apeiros_> maasha: in free fall, you mean, yes?
<workmad3> skim1776: well, I spent about 1.5 months learning emacs in conjunction with latex in order to write that presentation...
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<workmad3> skim1776: but no, I've never really used it aggressively
<maasha> apeiros_: the funny thing about vim is that I keep discovering new smart features. and I forget them and rediscover them after a few years.
<shevy> lol maasha
<shevy> well actually you are right
<skim1776> workmad3, I think, it's not enough to judge about it. I'm going to spend some time for emacs after vim
<Jck_true> netbeans 7.0 broke the RUby extension - So hold you horses on that one
<shevy> 4 years ago I knew a lot more about vim than I do today, I forgot 80%
<maasha> so I get twice the pleasure!
<skim1776> shevy, are you serious?
<shevy> skim1776, yes
<workmad3> skim1776: it was enough for me to judge it and find it wanting :)
<skim1776> shevy, why?
<shevy> you need to wire the vim-way into your brain by constant practice
<maasha> shevy: once a year I spend a day or so identifying work tasks in vim that I can solve faster and smarter.
<workmad3> vim (and I posit, any good text editor) is mostly muscle memory, not knowledge
<workmad3> you need to get to the point where you don't think 'I want to copy so I press ctrl-c', you just think "I want to copy this text from here to there" and your fingers are already moving (or done)
<maasha> heh, year, some of the those visual block commands I cannot explain to people asking. Its in the fingers only!
<shevy> yeah
<maasha> visual blocks, folding and refactoring.
<shevy> I think if I could extend vim in pure ruby rather than this ugly vim-language I'd still use it
<workmad3> shevy: you mean like you can, if you compile ruby support into vim?
<skim1776> yeap, I use Ctrl+C for switching to the normal mode, even in notepad++ or visual studio
<shevy> workmad3 I dont think you can
<maasha> autocomplete words and lines.
<dbgster> Would it be correct to say Ruby is closer to javascript (being a prototype-oriented language or instance-based) compared to a class-based language?
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<dbgster> since all classes are actually instances of Object, kinda like javascript.
<shevy> for instance, what is the ruby-way for this vim extension: function sort() :%!sort endfunction
<maasha> "Ruby is Perl's younger and prettier sister!"
<workmad3> shevy: you can get ruby support into vim, I know that
<workmad3> shevy: and command-t.vim requires it (and has .rb files in the plugin)
<skim1776> maasha, ruby is a girl? I like that
<workmad3> I have no idea if it's *good*, but it's possible :)
<shevy> hmm I am going to look at those rb files
<Jck_true> maasha: Sadly still so young you get in trouble putting your hands on her ;)
<workmad3> also, the vim that you get pre-packaged with OS X doesn't have ruby support despite them both being standard, but MacVim does
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<WhereIsMySpoon> dbgster, surely that means it's also very much like java?
<shevy> maasha ruby is quite old too :D
<dbgster> WhereIsMySpoon: how so?
<WhereIsMySpoon> java has an object superclass
<workmad3> (and that in part is why I moved away from the command-t plugin to molly.vim)
<workmad3> WhereIsMySpoon: the java object model is substantially different
<WhereIsMySpoon> all things that arent primitive types are objects
<workmad3> WhereIsMySpoon: and there isn't a 'primitive' type in ruby
<WhereIsMySpoon> oh i see
<WhereIsMySpoon> hmn
<workmad3> WhereIsMySpoon: superficially, I know what you mean though... but once you dig slightly beneath the surface, the differences are very apparent :)
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<shevy> workmad3, interesting https://wincent.com/products/command-t is indeed a ruby script
<WhereIsMySpoon> yea workmad3
<workmad3> shevy: yeah... but looking at the github repo, there's also some C in there, and probably some vimscript :)
<shevy> yeah it is a bit strange lol
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<dbgster> WhereIsMySpoon: but when you define a class, it isn't an instance of anything….
<workmad3> molly.vim is *much* simpler and gives mostly the same functionality :)
<workmad3> dbgster: you can get class objects in Java
<shevy> WhereIsMySpoon it is hard to compare java and ruby
<shevy> java is like the strict OOP general
<workmad3> dbgster: it's not even that hard... but it's certainly not the same thing as in ruby :)
<shevy> ruby is like the philosophizing aristoteles in your own garden
<WhereIsMySpoon> hehe
<WhereIsMySpoon> i think ruby looks a lot like python
<shevy> in parts
<workmad3> WhereIsMySpoon: you take that back!!!
<WhereIsMySpoon> but has some really nice oo stuff as well
<shevy> it does not have the:
<workmad3> :)
<WhereIsMySpoon> haha
<shevy> def foo(self)
<WhereIsMySpoon> i like python
<shevy> thingies
<WhereIsMySpoon> yea
<workmad3> I'm not fond of python... I find it too verbose
<shevy> yeah, I dont think a real OOP language need to have an explicit self
<dbgster> workmad3: ok, I was just saying ruby and javascript seem to be similar, but maybe I'm wrong…. prototype based seemed kinda the same…but i'm still learning
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<shevy> I like that you can omit the end though
<workmad3> dbgster: oh, you were talking about javascript, not java
<WhereIsMySpoon> haha yea i know what you mean about it being verbose
<WhereIsMySpoon> yea sorry
<WhereIsMySpoon> i took over a bit
<WhereIsMySpoon> <_>
<shevy> I still hope there comes the day for a language to dethrone python and ruby at the same time
<dbgster> workmad3: yes javascript
<workmad3> dbgster: again, it's a bit different... but you can certainly make javascript act like ruby (or vice-versa :) )
<workmad3> that's more because both javascript and ruby have a form of MOP though :)
<WhereIsMySpoon> workmad3, for some reason ive been thinking your name was "workmonad" in my head and have only just noticed it's workmad
<workmad3> WhereIsMySpoon: no, my name isn't a shortening of the common haskell epithet 'work, monad, work!!!'
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<workmad3> ;)
<WhereIsMySpoon> what's mop?
<workmad3> MOP - MetaObject protocol
<WhereIsMySpoon> i see
<workmad3> it's basically a way to get in and rewrite how the object system works
<WhereIsMySpoon> ah right yea
<WhereIsMySpoon> ive seen that
<WhereIsMySpoon> that looks pretty nifty
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<workmad3> if you want to learn about MOP stuff explicitly though... have a look at common-lisp :)
<WhereIsMySpoon> although i cant see why you'd want that vs making a subclass
<WhereIsMySpoon> and use that
<WhereIsMySpoon> so that people dont get confused
<shevy> well
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<shevy> subclassing is probably the easiest thing to extend objects with functionality
<workmad3> it's also the most abused :)
<WhereIsMySpoon> whats the different between subclassing and mop
<WhereIsMySpoon> why would you want mop instead
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<workmad3> MOP isn't an actual thing... I think you might be confused with 'module' now ;)
<shevy> mop?
<WhereIsMySpoon> er
<shevy> isn't that what you use to clean a floor?
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<WhereIsMySpoon> xD
<WhereIsMySpoon> i mean the thing where you open up an objects internals and change it
<shevy> modules are a lot worse than subclassing really
<WhereIsMySpoon> so that e.g. Array does something different
<shevy> WhereIsMySpoon, well you modify core classes, you can modify any ruby class
<workmad3> WhereIsMySpoon: that's part of the metaobject protocol
<WhereIsMySpoon> but why
<shevy> class Array
<WhereIsMySpoon> why not just subclass
<shevy> def something_here
<apeiros_> shevy: why do you consider modules worse than subclassing?
<workmad3> WhereIsMySpoon: but certainly not all of it... and why? because sometimes it's the cleanest, or best, or only way to do what you want
<WhereIsMySpoon> how can it be the only way? and when is it the best way?
<shevy> apeiros_, I always feel that when I have to use a module I am more limited than when I have to use a class. For instance, when I want all my objects in a project to have a @debug variable, it always was easier to do by subclassing
<workmad3> WhereIsMySpoon: FileUtils shows how it's a clean way. That reopens the File class and adds extra functionality but only once you actually need it
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<shevy> WhereIsMySpoon, well you dont have to modify class Array at all, you can subclass too
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<WhereIsMySpoon> workmad3, but why wouldnt you just make your own MyFile class
<WhereIsMySpoon> then if another programmer comes along in a year he wont get confused
<shevy> there is a lot of things over how you can get confused
<shevy> some ruby code of others confuses me a lot
<workmad3> WhereIsMySpoon: because it makes sense for the functionality to be on the File class... as opposed to cluttering the global namespace up with 'MyFile' and 'YourFile' and they both define the same method but do differeth things
<shevy> *by others
<workmad3> *different
<WhereIsMySpoon> hmm i guess
<workmad3> WhereIsMySpoon: and in reality, the confusion doesn't happen like people worry it will (unless you're going crazy with it)
<WhereIsMySpoon> oki :)
<WhereIsMySpoon> i guess as long as its documented properly
<WhereIsMySpoon> :)
<workmad3> WhereIsMySpoon: and FileUtils is part of the ruby standard library ;)
<WhereIsMySpoon> :)
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<workmad3> WhereIsMySpoon: as for when it's the only way... you're using some published gem, and it contains a massive bug, but you don't have time to rewrite the gem and you don't want to maintain a fork of it...
<shevy> the less you have to modify core aspects of ruby, the better, if you want to distribute it to others
<workmad3> WhereIsMySpoon: so you can open up the class, correct just the specific bit that has a bug and you're sorted
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<shevy> I think he speaks of his own experience here :D
<WhereIsMySpoon> workmad3, yea i guess thats a good example :)
<workmad3> WhereIsMySpoon: ideally, you'd make it so that the patch turns off if correct behaviour gets added in an update
<workmad3> shevy: heh :) not quite my own experience... but I've come close to doing it a couple of times ;)
<workmad3> shevy: or a couple of times where I just realised I was being stupid... but it is a potential use-case
<shevy> most of the time bugs in ruby projects that don't get fixed are dead projects, which makes me sad
<workmad3> yeah
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<workmad3> but if it's on github, you could always take a project fork, update it and become the maintainer ;)
<shevy> they are planning to make all of stdlib gems though right now, which I think is nice
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<shevy> yeah
<workmad3> and yes, I like the idea of gemifying the stdlib
<shevy> I plan to do this with ruby-fpdf
<shevy> but my own projects get priority for a bit longer before I try at that
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<workmad3> pull in the parts you need, and uncouple the stdlib release cycle from the ruby release cycle :)
<shevy> yeah
<shevy> I think it is also psychological
<shevy> no difference to other gems anymore :)
<shevy> same that require 'rubygems' is no longer needed too
<shevy> I wonder why matz never thought about gems before they were written!
<workmad3> yeah... I got caught by that with FFI the other day
<workmad3> I had to work with 1.8.7 on a client server (1.9.3 just would not compile :( ), FFI gem installation requires the rubygem library pulled in but doesn't do it explicitly
<workmad3> had to remember how to use RUBY_OPT
<workmad3> (or is it RUBYOPT ?)
<apeiros_> RUBYOPT iirc
<workmad3> whichever it was, I put it into the profile so it wouldn't happen again and I could forget about it :)
<apeiros_> RUBYOPT is usually a bad idea IMO. makes you unaware of portability issues.
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<workmad3> the client is planning to get 1.9.2 or 1.9.3 onto the server, but because their infrastructure is a mess, they need to arrange with a different department to get the solaris package installed into the global zone which will then be replicated into their zone at the next update cycle
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<WhereIsMySpoon> D:
<workmad3> at which point, the -r rubygems I put into rubyopt won't be necessary and it being there won't be a problem
<workmad3> I'm still decompressing from the 2 days of 'fun' that was getting a rails 3.2 app installed on a badly managed, badly organised solaris zone :/
<apeiros_> ^^
<apeiros_> that's why you have this nick? :D
<workmad3> heh :) no, the nick is because that was my autogenerated uni username and it stuck
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<WhereIsMySpoon> just out of interest
<WhereIsMySpoon> why are many servers run on solaris
<workmad3> because it is good... if you know what you're doing
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<shevy> hmm
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<workmad3> zones are ZFS are the key things, I believe
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<workmad3> one of the guys I work with said 'Solaris is brilliant... as long as I never have to touch it'
<Tasser> you can actually run linux in zones
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<workmad3> still, I'm away from that now :)
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<undersc0re> workmad3: Solaris... :|
<pcboy> Does anyone know why the Date class hasn't anymore the ::load method to unmarshall it in ruby 1.9? I try to unmarshall old 1.8 objects and it fails because of that.
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<apeiros_> marshal isn't guaranteed to work across ruby versions afaik
<apeiros_> and Marshal.load(Marshal.dump(Date.today)) works fine
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<seoaqua> apeiros_, sorry ,just got your msg. sort of yes, i need any first N pairs, even random
<apeiros_> well, you'll have to do a shift N times then, Hash#shift doesn't accept a param
<apeiros_> or convert it to an array…
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<pcboy> apeiros_: Yeah I know. But I didn't find a convenient way to marshal my data in fact. Marshal.dump is ultra convenient because it works all the time. I have some objects with complex attributes and .to_json doesn't work, so I need to define it for complex data types.
<pcboy> But in my case I still have Dalli::DalliError (Unable to unmarshal value: class Date needs to have method `_load'):
<apeiros_> pcboy: monkey patch it
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<pcboy> apeiros_: I've done it. It works. But know I need to implement it correctly. That's another thing..
<fayimora> please whats the ruby indentation convention..2 spaces or 2 tabs and what the difference btw both of them
<unwitting> What is the best approach for configuration in a ruby gem? Should I create a singleton Configuration class or should I have a lot of class variables in my main class and use a setup() method to configure them?
<apeiros_> fayimora: 2 spaces
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<apeiros_> unwitting: personally I hate gems that force me to have a single config only
<apeiros_> unwitting: consider e.g. a gem with a twitter-api, allowing only a single config - why does the author think I'd only want to connect to a single account in my app?
<fayimora> apeiros_: ok thanks..so whats the difference..it doesn't seem to make any difference when i shane it in text mate or sublime
<unwitting> apeiros_: you got a point
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<apeiros_> fayimora: there's no functional difference. it's only about style.
<fayimora> hmmm ok
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<pcboy> apeiros_: What I don't understand is that the major and minor versions of Marshal didn't changed. But I still can't make a Marshal.load(str) in Date._load(str). It makes a dump format error. I'm on ruby 1.9.3..
<apeiros_> pcboy: it may well be a change in the way Date let marshal dump itself
<apeiros_> so while the marshal format itself didn't change, maybe the format of date in that marshal changed…
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<pcboy> Mh yeah maybe.
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<pcboy> apeiros_: Do you know a good alternative to Marshal? Something very fast and that works out of the box like Marshal?
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<apeiros_> pcboy: YAML
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<apeiros_> but marshal is faster
<apeiros_> iirc about 3x
<Tasser> apeiros_, how about json?
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<apeiros_> Tasser: sucks ass
<apeiros_> try json on anything that isn't an array, hash, string or numeric
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<pcboy> Yaml is too slow. And the dumped too dense.
<apeiros_> pcboy: you could use yaml to just migrate the data from old ruby to new ruby
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<pcboy> Yeah that's right. That's also something I wanted to try.
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<pcboy> But I'm wondering if these case will happen often or not.
<pcboy> I need to find an alternative if that's the case.
<apeiros_> changes in marshal are rather rare IME
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<pcboy> apeiros_: Yeah but like you said, the change is not in Marshal here, but in Date.
<apeiros_> changes in yaml are even rarer, so using yaml to migrate when you upgrade your app is a viable generic strategy IMO
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<apeiros_> pcboy: ok, let me rephrase: changes to marshal and/or marshal-serialization of objects
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<pcboy> mh. Ok. I hope so.
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<shevy> yaml gets really slow once it gets large, I played around a bit with +1.3 MB yaml files, that is no fun
<apeiros_> pcboy: you could try extprot, at least I think that was its name
<apeiros_> it aimed to be a) faster than marshal, b) produce a more compact output and b) be available in other languages
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<pcboy> apeiros_: Yeah I've seen it some time ago. But you still need to describe how to serialize your complex data structures. I also remember another one http://msgpack.org/ . But still the same problem, doesn't work out of the box for most of types.
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<pcboy> There is still something I don't get. If I look at the load method of Date in 1.8.7 it's def _dump(limit) Marshal.dump([@ajd, @of, @sg], -1) end . And the _load method takes that array and create a new Date with it. So that's just an array. I shouldn't have a dump error in 1.9.3.
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<evilgeenius> I want to create my own simple exception Class, but not sure what the best Exception class is to inherit from in Ruby. Which is it?
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<keymone> evilgeenius: inherit from RuntimeError
<evilgeenius> keymone: Why not StandardError?
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<keymone> that's semantics. runtime error inherits from standard error. are you trying to catch something during runtime? yes => inherit from runtime error.
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<keymone> all depends on what information your error provides - just check this http://rubylearning.com/images/exception.jpg and inherit from whatever suites your needs better
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<BeLucid_> hi, I have a question about IO.open and file descriptor 3 and 4 in ruby 1.9.3
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<BeLucid_> I'm using a library, written for ruby 1.9.2 that seems to want to get ahold of stdin and stdout like this:
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<BeLucid_> input = IO.new(3)
<BeLucid_> output = IO.new(4)
<BeLucid_> that doesn't work in ruby 1.9.3, you get: The given fd is not accessible because RubyVM reserves it (ArgumentError)
<Phrogz> ! :)
<BeLucid_> what's the right way to open stdin and stdout on 1.9.3?
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<Phrogz> Can you not just use the existing STDOUT and STDIN constants (or the reopenable $stdout and $stdin)?
* Phrogz doesn't know much about file descriptors.
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<Phrogz> Oops, that was meant to be http://stackoverflow.com/q/9637092/405017
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<skim1776> is there any method for hash to add only those elements of the argument hash which don't exist in the first one?
<apeiros_> merge, either reversing receiver & argument, or with a block
<skim1776> apeiros_, which block?
<skim1776> apeiros_, ah, okay, got to the documentation, thanks
<apeiros_> blocks are those `do/end` and `{…}` things that you pass to methods
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<robert_> so, if I pass in a block to a class with several methods defined inside of said block, would it be possible to call one (or more) of the methods inside that blocK?
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<apeiros_> robert_: you can't pass things to classes
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<apeiros_> you can only pass things to methods
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<dikim33> Can anyone tell me what happens after this? (1..10).find {|i| if i > 2}
<apeiros_> dikim33: what do you mean "after this"?
<apeiros_> what happens after that would depend on the code after that…
<dikim33> After this, there is no output of (1..10).find {|i| i > 2}
<dikim33> thanks, apeiros_
<apeiros_> dikim33: well, it will return the first value that matches the condition in the block
<robert_> er, not a class; but whatever. same difference. :p
<robert_> it's the initialize method
<apeiros_> you don't have any code there that outputs anything…
<robert_> (the constructor)
<apeiros_> robert_: you can store the block that is passed to a method, yes
<dikim33> or any out from inject statement after the wrong statement.
<apeiros_> and you can invoke that stored block later on, yes
<apeiros_> you use &block syntax for that: def foo(&block); @stored_block = block; end
<robert_> the block has functions defined inside it, though. I want access to those methods.
<apeiros_> robert_: hu?
<apeiros_> that makes no sense to me - pastie?
<apeiros_> dikim33: output and return values are two different things.
<dikim33> apeiros_: yes, I understand the syntax of inject but the question is after I put the wrong block statement, the inject statement does not return anything.
<apeiros_> dikim33: everything returns something
<dikim33> OK, apeiros_ : what I expected the normal behavior after the wrong block in inject.
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<apeiros_> dikim33: look, how about you make a coherent question? paste the code, the input, what you expect to happen and what happens instead.
<dikim33> Sure, apeiros_ http://pastebin.ca/2126451
<dikim33> here it is.
<robert_> apeiros_: http://pastebin.com/8y7b0qar
<apeiros_> dikim33: you should not use irb with simple prompt
<apeiros_> it doesn't tell you that you're in a nesting
<apeiros_> which is what you're experiencing there
<apeiros_> exit from irb, restart it, then try again
<apeiros_> as of line 21 in your pastie, irb is waiting for that if statement to be closed.
<dikim33> I see. is there any way to go to the verbose prompt? I am new to ruby and it started this way on my mac.
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<dikim33> apeiros_: ?
<apeiros_> dikim33: yes, create a file ~/.irbrc
<apeiros_> wait, I get the contents for it…
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<apeiros_> oh, hm, I use a custom prompt and I don't remember the normal prompt by heart…
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<apeiros_> ah, I think this should do:
<apeiros_> IRB.conf[:PROMPT_MODE] = :DEFAULT
<dikim33> It seems to be surprising that I know how to go to the simple prompt with --simple-prompt option but I can not find to turn back to the normal.
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<dikim33> on the command line.
<dikim33> OK. apeiros_
<apeiros_> yeah, iirc osx has an irbrc that sets the prompt to simple. bad thing IMO
<apeiros_> oh, rails also (used, at least) was hard coded to set the irb prompt to simple (horrible idea, and the person who did it should be spanked)
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<dikim33> apeiros_: OK, what about now? http://pastebin.ca/2126454
<robacarp> hmm...I don't think I've ever messed with the irb prompt
<apeiros_> dikim33: you see the number between : and > ?
<dikim33> what went wrong with my trial?
<apeiros_> usually it's :0>
<dikim33> Yes.
<apeiros_> that's the nesting depth
<dikim33> So, how can I go back to 0?
<apeiros_> on line 21 you can see that it becomes :1>, means you're nested one level deeper
<apeiros_> you close that `if` from line 20
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<apeiros_> your syntax in line 20 is broken
<dikim33> I do know that my syntax is broken.
<apeiros_> but since irb doesn't evaluate it until you terminate the if, you don't get a syntax error
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<dikim33> ok. apeiros_
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<apeiros_> you can close it by writing `end`
<Mon_Ouie> You can hit ^C to restart typing an expression
<dikim33> but I used the code block.
<dikim33> I see. apeiros_
<apeiros_> or what Mon_Ouie says
<dikim33> OK, Mon_Ouie
<apeiros_> in some cases on OS X, irb uses edit-line instead of readline, ctrl-c only works then when you also hit enter after ctrl-c (totally annoying)
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<dikim33> I am just curious.. the code block should make sure my if statement is complete, isn't it?
<apeiros_> ?
<apeiros_> code itself doesn't care about your syntax
<apeiros_> your interpreter (in that case irb) does
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<apeiros_> and since irb allows spreading a statement over multiple lines, it won't complain until your statement is considered "complete"
<dikim33> apeiros_: my question is code block is not just like block in the for loop or something in other languages?
<apeiros_> no
<apeiros_> it can be used in a similar fashion
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<dikim33> apeiros_ : OK. at the beginning, it seems to be a little confusing. I think I know what happened now. Thanks a lot for your help.
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<shevy> dikim33 hmm that has no return value at all for you in irb?
<shevy> ah ok
<shevy> the "if" expected a matching "end" and thus waited
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<nobitanobi> I have an array of JSON objects like this: [{"playerid":1 , "visits":2, "goals": 5}, {"playerid":2 , "visits":4, "goals": 10}] I would like to have an average of goals per visit for all the set of players (not the average of each player). I have done it doing each and accumulating each average and then doing the average of all those stored values. But, how would I do this in a ruby/cleaner way?
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<shevy> well you need to gather all values
<shevy> I think .each is a very ruby way
<shevy> as for cleaner... hmmmm
<dikim33> shevy: yes, I happened to play with malformed if statement in inject and I did not know what happened but it is still confusing that irb does not check that my code block has the complete statement or not.
<hashpuppy> > user.class => User(id: ...). > user.is_a?(User) => false why?
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<shevy> depends what you mean with cleaner nobitanobi ... you could try to play around with inject like:
<shevy> [ 5,2,52,52,2,54,5444 ].inject(0) { |x,y| x+y } # => 5611
<hashpuppy> user.class.to_s == "User" => true
<shevy> but I myself hate .inject and dont use it
<nobitanobi> actually, I shouldn't use cleaner
<shevy> dikim33 well it could not return earlier or?
<nobitanobi> it's like sometimes I get really amazed on how one liners in ruby help my eyes
<nobitanobi> >)
<shevy> it is actually indicating that you are in a nested way
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<shevy> the minor counter increased:
<shevy> irb(main):009:1>
<shevy> I changed my irb prompt, I hate this display :)
<shevy> my irb prompt is ""
<shevy> empty
<dikim33> no, it did not return anything until I put the 'end' statement after the code block. shevy
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<dikim33> shevy: and also, it was surprising that irb did not complain of the incomplete if-statement in my code block.
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<shevy> I really dont know this behaviour you describe
<dikim33> but if this is how ruby works, I have to live that way. http://pastebin.ca/2126454
<dikim33> shevy:
<shevy> yes I can see the code
<hashpuppy> oh
<shevy> how shall ruby know when you want to use an end and when not dikim33? :)
<hashpuppy> reload! seemed to screw things up
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<dikim33> Well, I thought the code block should be completed.
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<shevy> remember that do/end is often synonymous with {} syntax too and that it is also a hash
<dikim33> shevy:
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<shevy> yes but only the { and } you started a new one within the block though
<dikim33> I see. shevy
<shevy> you can use one-liner if/unless checks
<shevy> return true if 5 > 4
<shevy> it's all a bit complicated to parse
<shevy> you can also do
<shevy> if foo
<shevy> end.unless 5 < 5
<lolzie> Hi guys, could somebody please explain in a nutshell why string[0..0] returns the first character, and string[0..0] not?
<shevy> or even funnier
<shevy> class Foo
<shevy> end.something_here
<dikim33> Yes, I like the way that ruby deal with the if statement and other control flow. shevy
<shevy> I am confusing myself... don't do any of that please, it makes the head explode :D
<apeiros_> lolzie: you sure you wrote what you wanted to? :)
<shevy> lolzie ok what is the difference
<shevy> to me it looks as if you wrote 2x the same thing
<shevy> unless there is some invisible character
<lolzie> oops. I meant string[0...0] ;)
<shevy> ah that
<apeiros_> because 0...0 is from zero to zero excluding zero
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<apeiros_> and since you just excluded the only offset you had…
<shevy> looks like a smiley face
<lolzie> apeiros_: ohhh I see, my understanding was the wrong way round! thanks
<shevy> lolzie it gets easier if you do this on numbers
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<shevy> or ranges
<shevy> ('a'..'f').to_a # => ["a", "b", "c", "d", "e", "f"]
<shevy> ('a'...'f').to_a # => ["a", "b", "c", "d", "e"]
<lolzie> Cheers
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<hashpuppy> can you mixin protected methods?
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<hashpuppy> mixin methods that you want protected
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<hashpuppy> maybe i should just inherit
<shevy> I myself think the more you can avoid mixins the better
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<shevy> I actually dont know the answer, but I would assume that it is not possible
<shevy> hmm
<Mon_Ouie> When you include a module in a class, all instance methods from the module are accessible to instances of that class
<Mon_Ouie> Regardless of visibility
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<Mon_Ouie> (Visibility is preserved, though)
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<shevy> aha
<shevy> hashpuppy, I guess you can mixin a protected method without a problem:
<shevy> hashpuppy, seems not possible http://pastie.org/3559032
<shevy> oops
<shevy> hashpuppy, seems possible http://pastie.org/3559032
<hashpuppy> :)
<hashpuppy> thanks
<shevy> apeiros_ are you giving similar interview questions too? :)
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<apeiros_> shevy: hm?
<shevy> hehe
<shevy> thought you interview people
<apeiros_> ?
<apeiros_> why'd I do that?
<apeiros_> oh, or you mean as in: job interview?
<shevy> yeah
<shevy> to cause sweat on the forehead effects!
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<apeiros_> and similar to what?
<shevy> I dunno, all kind of hard-to-answer questions. I am sure there are plenty of ruby weird things to know
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<shevy> things like... trace_var
<shevy> __END__
<shevy> hmm things like that
<apeiros_> no, people fail already at easier things
<shevy> hehehe
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<apeiros_> shevy: but right now I'm curious
<apeiros_> we hired a perfect ruby noob
<apeiros_> and I'm training him
<apeiros_> I'm really curious how far I'll have gotten him in 3, 6 and in 12 months
<shevy> cool
<shevy> he was not exposed to ruby before? but to programming at least?
<ddv> isn't it better to hire someone who knows ruby :/
<apeiros_> ddv: if you can *find* one, sure
<ddv> or has a CS degree or something
<apeiros_> CS degree without ruby knowledge sadly is just an expensive trainee
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<ddv> hire a medior or senior then
<shevy> aren't they lazy past 30 years!
<td123> apeiros_: you can learn ruby in like a week
<ddv> yeah
<ddv> td123: the language
<ddv> td123: not the std lib :D
<td123> ya, that'll come with practice, I'm just saying that hiring based on knowledge of a language shouldn't be a deciding criteria imo
<apeiros_> td123: yes, that's what I did, but I know ruby for close to 8 years now and occasionally learn a thing
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<ddv> td123: yep
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<apeiros_> ddv: you say that as if they were there like sand on the beach
<apeiros_> hint, they aren't
<ddv> apeiros_: of course they aren't
<apeiros_> in the local rails community, half of the people visiting it are searching devs
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<td123> it's a positive if they already know ruby though :P
<apeiros_> it's really difficult to find rails devs at all, it's exceptionally difficult to find a *good* rails dev
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<apeiros_> and since we don't have infinite time to search, we hired somebody who is intelligent, has basic knowledge and can be trained
<apeiros_> we're still looking for another rails dev, though
<ddv> I work at fairly large Dutch IT company as a Ruby dev and we also have trouble getting good developers
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<ddv> But I do expect people to teach themselves which is usually not a problem with grad students
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<apeiros_> oh, of course. the guy does homework
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<shevy> hehe
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<shevy> "as part of your homework, carry my backpack to my car"
<ddv> apeiros_: He is not allowed to learn on during working hours?
<ddv> -on
<ddv> lol
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<apeiros_> define 'learn'. of course he learns during work hours. we pair for programming.
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<apeiros_> so he learns the whole time.
<ddv> apeiros_: reading documentation, reading books, experimenting etc
<apeiros_> reading docs & books is homework
<ddv> apeiros_: Weird why is that homework?
<apeiros_> experimenting to an extent. he gets tasks assigned.
<apeiros_> it's like - things he has to do in order to get the expected skill are mostly homework
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<apeiros_> while things he does to create products are at worktime
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<apeiros_> of course, to a certain degree you'll have to read docs and do research in order to create products, so it's not like it was a sharp line
<ddv> apeiros_: Ok
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<apeiros_> we're not a big IT shop, we're an internal IT department, and we're rather small (currently 4 people + that new guy)
<ddv> oh I work in a team of about 20 developers
<apeiros_> s/IT department/Software development department/ - we have a separate IT Services dep
<apeiros_> well, we're 2 devs :)
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<apeiros_> 1 dba and 1 "leader" (hard to describe what he currently does)
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<ddv> we have juniors, mediors, seniors and leads
<apeiros_> on a total different topic: man, why didn't they consider adding a check-digit to phone numbers? :-S
<apeiros_> *totally
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<ddv> apeiros_: a dba on a 4 man team?
<apeiros_> ddv: the dba existed even waaaay before the software departement…
<ddv> apeiros_: Oh
<apeiros_> which makes sense - they had most software dev outsourced, but not the data
<apeiros_> so having a dba was a necessity, having a software dep wasn't
<apeiros_> but it was a smart move to create a software dep
<ddv> of course you say that :D
<apeiros_> (or: it was stupid to outsource software dev)
<apeiros_> yeah, no, I don't just say that :)
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<apeiros_> it's not difficult to hornswoggle somebody without proper knowledge…
<apeiros_> it's also rather easy to get caught in unfavorable lock-in situations
<apeiros_> and last but not least - you're handing out *a lot* of core competence and knowledge
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<shevy> yeah
<shevy> in prison!
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<shevy> very unfavourable lock in situation that one is
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<ddv> apeiros_: this is why we require all our devs to have different areas of expertise, we don't have one db who knows all things db, we expect everyone to attain this knowledge to a certain level, else we would be in big trouble if someone left the team (we use scrum mostly)
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<ddv> *db guy*
<doug> ok, i gotta make this more terse:
<doug> "%.2f" % (((hours * 60 * 60) - (Time.now - Time.parse(punchedout, Time.at(Time.now - 24 * 60 * 60))))/(60 * 60))
<doug> (that's preceded by hours = 23.5; punchedout = "4:00pm"; require 'Time')
<apeiros_> ddv: well, we don't require it - but there's no need for a formal requirement - we simply couldn't work if we weren't all all-rounders…
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<doug> replacing by 60 * 60 by 3600 isn't what i'm talking about, either.
<apeiros_> ddv: we do the full stack, from server setup, over server maintenance, to app development, interface design, testing, etc.
<ddv> apeiros_: sure
<apeiros_> not that I'm completely happy with that
<apeiros_> but it does make for a nice experience
<apeiros_> doug: wth?
<apeiros_> doug: what is it supposed to do?
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<apeiros_> (also, require 'time', not 'Time')
<apeiros_> Time.at wants an epoch-time (integer), but Time.now - seconds returns a Time
<doug> apeiros: make it easy for me to trim my hours when i leave my harvest punchclock running overnight
<Sou|cutter> doug: 86400 and 3600
<Sou|cutter> these are very standard numbers
<rippa> apeiros_: works on windows (☞ﾟ∀ﾟ)☞
<apeiros_> rippa: yes, but it's redundant
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<apeiros_> Time.at(Time.now) == Time.now
<apeiros_> it's pointless to do
<doug> hm, do i have that?
<apeiros_> Time.at(Time.now - 24 * 60 * 60)
<apeiros_> yes, you do
<doug> i'm doing that so that the punchedout is interpreted as happening yesterday
<apeiros_> Time.at(Time.now - 24 * 60 * 60)) == Time.now - 24 * 60 * 60
<doug> ah, ok
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<nobitanobi> I have a question... I have an object with the following attributes: @attributes={"id"=>1, "matches"=>10, "goals"=>"13"}
<nobitanobi> When I try to do values_at("goals", "number_of_matches") -- I get undefined method `values_at' for
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<apeiros_> nobitanobi: you do @attributes.values_at(…), yes?
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<nobitanobi> mmm, no
<nobitanobi> that's right
<nobitanobi> I need to access the attributes
<nobitanobi> I was doing object.values_at
<apeiros_> well, your object doesn't have a values_at method
<doug> good enough for now i spose
<doug> apeiros_++
<rippa> you can implement it though
<rippa> do a pass-through to attributes
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<nobitanobi> rippa: spend_per_visit.attributes.values_at
<nobitanobi> this made it
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<pedahzur> I am dealing with a ruby application (that is not mine) running on a server (that is mine) that is regularly taking 100% CPU. The dev says there is nothing in there that should cause that kind of CPU usage (no CPU bound stuff, no busy loops). strace shows a lot of stuff like this: http://pastie.org/3559341 Any hints as to where I should start the trouble shooting? Thanks!
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<apeiros_> pedahzur: public facing app?
<apeiros_> pedahzur: anyway, the dev should probably just profile the app
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<pedahzur> apeiros_: No, server side.
<pedahzur> apeiros_: Yeah, profiling would be good. I'll have to see if he can replicate our entire environment in a dev env. Is there a way to attach to a running ruby VM to profile?
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<RubyPanther> pedahzur: You could always just put your BOFH hat on and shut them down until they find their problem.
<apeiros_> that depends on what you use to run the app
<apeiros_> but most likely not
<pedahzur> RubyPanther: Umm...the application is part of our testing infrastructure. I'd have LOTS of people really mad at me if I tried that. :)
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<pedahzur> apeiros_: It's just the standard C ruby VM, I believe.
<pedahzur> apeiros_: ruby 1.8.7 (2010-01-10 patchlevel 249) [x86_64-linux]
<apeiros_> pedahzur: you can run any ruby app with ruby -rprofile
<apeiros_> but beware, it can run up to a 100x slower
<apeiros_> there's better profilers
<hashbangchris> Hi rubyists, is there a way to make a string containing '#{something}' evaluate this /later/ on? This would be very useful for me however I can't figure it out.
<apeiros_> hashbangchris: other than eval? no
<apeiros_> hashbangchris: that's what template engines are there for. see ERB and consorts
<hashbangchris> thanks, so I guess I should write more elegant code then :)
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<shevy> hashbangchris always
<scalebyte> i have something like... @user.about_me.blank?
<apeiros_> hashbangchris: the simplest solution is a proc
<shevy> elegance, beauty...
<shevy> scalebyte, not giving up on rails are you? :D
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<scalebyte> can i do something like @user.about_me.length = 500 ?
<scalebyte> shevy: this is pure ruby
<shevy> if you have control over the code, sure
<apeiros_> scalebyte: = is assignment. == for comparison.
<shevy> def length=(i)
<shevy> @length = i
<RubyPanther> hashbangchris: You just us a sprintf like '%s' % [something] and your something can happily live in the substitution array and if you want to do it later, you just don't use the % operator yet
<shevy> but I think you dont have control, you seem to just want to glue together some railsy things
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<apeiros_> hashbangchris: as of ruby 1.9, sprintf/String#% also can do keyword substitution:
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<apeiros_> "Hello %{entity}" % {:entity => "World"} # => "Hello World"
<hashbangchris> RubyPanther, apeiros: Hey, I'm on 1.9.3 so that helps a lot, thank you!
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<i8igmac> i have a client, when the server closes the connection, i need the client to check if its closed then exit
<i8igmac> socket.closed? will always read false until the client closes the socket
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<i8igmac> how do i check if the server closed the socket
<scalebyte> shevy: can i check in a single line : unless @user.about_me.length = 500
<shevy> what are you doing man
<hashbangchris> Oh, that's really nice, it helps me to be MVC in something that would have been a really ugly or very long script otherwise.
<shevy> you must learn ruby
<shevy> you are going to die
<shevy> you did not read what apeiros_ wrote either
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<shevy> return false unless @user.about_me.length == 500
<scalebyte> shevy: whats the better way ? can I compare it directly or
<shevy> you can do that
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<i8igmac> if socket.eof==true; exit
<scalebyte> shevy: yes I am indeed using == for comparing
<scalebyte> apeiros_: ^^
<iamjarvo> is it possible to append a string to a symbol so say you have :foo i want to doo :foo + bar and make :foorbar
<iamjarvo> im guessing not
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<scalebyte> shevy: lenght is not a method
<scalebyte> shevy: length
<hashbangchris> lamjarvo: I always imagined symbols being similar to something in assembler so I'm very sure the answer is no :)
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<scalebyte> shevy: length == :)
<shevy> why do you tell me this
<shevy> I have no idea what @user.about_me returns
<shevy> you probably dont know either
<shevy> otherwise you would know what @user.about_me is
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<shevy> ruby strings know .size and .length
<shevy> "abc".length # => 3
<shevy> so whatever shit @user.about_me returns, I bet it is not a string in that case if the above code snippet does not work for you
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<RubyPanther> If you apply the Principle of Least Surprise, @user.about_me would be least surprising if it returned a string or nil
<i8igmac> so, ca some one show me how to check if a connection to the server is still active?
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<shevy> i8igmac I would if I'd know but I don't so I can't
<i8igmac> socket.closed? will always read false until the client does a socket.close
<RubyPanther> i8igmac: Generally, you write to it and check if it succeeds
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<i8igmac> is there a another way?
<RubyPanther> Otherwise any attempt to decide is theory and might be wrong. Assuming ethernet.
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<i8igmac> ill give it a shot
<pedahzur> apeiros_: Thanks. I'll see what I can do.
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<hashpuppy> can someone help me get this working: http://paste.pocoo.org/show/cxkiMlLDqil2GhytdFRD/
<hashpuppy> the hash looks something like this, if it's not obvious: {:location=>[:format], :start_date=>[:not_date_range_date], :end_date=>[:not_date_range_date], :user=>[:not_user]}
<Tasser> 閣 <- that was 'ät' somewhen - how did this happen?
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<apeiros_> Tasser: cosmic interdimensional bitmutation
<shevy> hehe
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<scalebyte> truncate(@user.about_me, :length => "6").strip_html unless @user.about_me.blank? not working
<hashpuppy> what i have doesn't make sense, but i hope you can see the intent
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<shevy> well
<shevy> you have a hash, whose keys point to one-member arrays
<shevy> that is not soooooo untypical even though it is a little odd
<shevy> (atypical? Hmm)
<hashpuppy> in this example they only have one
<shevy> guess it is "atypical"
<shevy> please pastie.org is so much better than paste.poopoo.org
<shevy> als "not working". you dont provide any error message.
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<hashpuppy> well, i don't think the code makes much sense. but i can provide an error message
<hashpuppy> undefined method `<<' for nil:NilClass
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<hashpuppy> in block in on
<hashpuppy> i know why that is
<hashpuppy> i wonder if it's possible to do this w/o an instance variable, though
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<hashpuppy> ok, well i got it by passing in output
<hashpuppy> does lin #10 make much sense: yield(true) if block_given?
<hashpuppy> i'm just going to rewrite this
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<shevy> not sure what the true means
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<shevy> yield if block_given? I see a lot
<shevy> yield(true) if block_given? hmm first time I see it actually, I think
<shevy> what is it doing :)
<SullX> I have a hunch that how I am doing this makes it vulnerable to hackers but what do you guys think? When the following url is requested '/custom/:item' , item is substituted into a mysql query. The query is basically "select value from #{item};"
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<SullX> is this setting myself up for someone to mess with my database?
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<apeiros_> SullX: yes, that's called sql injection what can be done there
<apeiros_> and the way around is well known as bind-variables
<SullX> apeiros_: thanks googling now
<apeiros_> every sane db connector can handle them. it works like: execute("SELECT value FROM table WHERE item=?", item)
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<apeiros_> the alternative is to sanitize the variable. but bind-variables are a bazillion times better and less likely to get exploited.
<SullX> apeiros_: mm, I see. so this way of writing the query prevents sql injection?
<SullX> bind-variables that is
<apeiros_> yes
<SullX> great, thank you
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<shevy> cool
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<shevy> learned something myself too
<apeiros_> as a bonus, they enable prepared statements, which allow better peformance
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<apeiros_> (except for mysql, which doesn't really have a query-planer/-optimizer)
<hashpuppy> ok, this is a better question with rewritten code that makes more sense. can this be rewritten any better? http://pastie.org/private/dyctha3dvzco3hl4ulu0q
<apeiros_> hashpuppy: if not --> unless
<hashpuppy> because i'm making 5 "on" calls for each hash pair
<apeiros_> also, conditions can be combined
<apeiros_> if a then if b then … end end --> if a && b then … end
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<hashpuppy> thanks
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<SullX> apeiros_: would the ruby-mysql gem happen to be one of the in-sane db connectors?
<apeiros_> SullX: I don't think so
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<apeiros_> mysql knows bind variables
<SullX> dbh.query("select itemnumber from ?", item) throws an error
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<apeiros_> it just can't (unlike almost every other rdbms) optimize prepared statements
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<apeiros_> SullX: well, I don't know its API
<apeiros_> you'll have to read the docs
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<SullX> okie doke, will do
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<apeiros_> from the readme, it looks like with ruby-mysql it works like this:
<apeiros_> my = Mysql.connect('hostname', 'username', 'password', 'dbname'); stmt = my.prepare('insert into tblname (col1,col2) values (?,?)'); stmt.execute 123, 'abc'
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<scalebyte> how can I get a boolean object in a checkbox ?
<SullX> apeiros_: I couldn't find a readme for the ruby-mysql gem... and the syntax above looks different then what I am using, could you link me?
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* SullX bows
<SullX> you are a superior googler
<SullX> thank you
<apeiros_> I don't google such things
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<apeiros_> rdoc.info, ruby-doc.org, rubygems.org, github.com and ruby-toolbox.com are addresses a rubyist must/should know
<apeiros_> oh, and rubyforge.org
<apeiros_> though it has been mostly supplanted by github
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<jlogsdon> rdoc.info is literally the coolest doc resource on the web
<apeiros_> jlogsdon: the only thing I miss from it are comments
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<jlogsdon> apeiros_: hm, yeah...
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<jlogsdon> they should just tack one of those "cloud" comment systems on it, so they don't have to worry about all the database crap that would go with it
<SullX> apeiros_: I am wondering if what you have above only works for values in a table, the query I have needs to switch tables based on which url is called. stmt=dbh.prepare('select itemnumber from ?') throws an error
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<apeiros_> SullX: I don't have mysql here, so I can't reproduce, sorry.
<SullX> its all good, thanks
<scalebyte> apeiros_: i have a boolean and want to use it in a checkbox... how can I do that ?
<scalebyte> apeiros_: I am getting can't convert Symbol into Integer error for this : = check_box_tag "[:education][:visible]", true, boolean_to_int(@user.profile.detail[:education][:visible])
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<vectorshelve> if a = "true" value = 1 else value = 0 how can I simplify this ?
<Mon_Ouie> It doesn't work in the first place
<Mon_Ouie> It's equivalent to value = 1
<Mon_Ouie> Because you used a = "true", instead of a == "true"
<vectorshelve> return 1 if a = "true" else return 0
<vectorshelve> Mon_Ouie: ^^ how to simplify this ?
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<Mon_Ouie> That's just invalid Ruby, you can't have a post-line if condition with an else clause
<vectorshelve> Mon_Ouie: actually i need to use a a boolean inside a checkbox... so I cant convert the falseclass or trueclass into int.. so trying to do this the indirect way
<vectorshelve> Mon_Ouie: that return was the last line for a function
<Tasser> vectorshelve, ask in #rubyonrails, they might have something
<vectorshelve> Tasser: I am banned there...
<vectorshelve> Tasser: neverthless this is pure ruby right
<vectorshelve> Tasser: any suggestions on making the line small ?
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<Mon_Ouie> My point was that it wasn't Ruby. Did you try that line at all?
<vectorshelve> Mon_Ouie:
<vectorshelve> Mon_Ouie: No
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<vectorshelve> Mon_Ouie: this is what I am doing : https://gist.github.com/2008739
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<Mon_Ouie> You need a "then" after the end of the condition (i.e. after "true")
<Mon_Ouie> (or a semicolon, or a newline)
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<vectorshelve> Mon_Ouie: https://gist.github.com/2008739 this will work ?
<Mon_Ouie> I'd suggest you take some time reading some tutorial about Ruby before going on
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<Mon_Ouie> And yes, it would work
<Mon_Ouie> Wait no, it needs an end too
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<SullX> ok, because I can't figure out bind-variables how can I go about sanitizing the html. Recap: I have a sinatra app and when the following url is requested '/custom/:item' , item is substituted into a mysql query. The query is basically "select value from #{item};"
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<SullX> this works well
<SullX> but opens me up to sqli
<SullX> any suggestions on how I can prevent these attacks in sinatra ?
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<ddv> SullX: #sinatra
<Phrogz> SullX: What are you using for your DB adapter? Sequel?
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<Phrogz> (And if not, why not? :)
<SullX> Phrogz: er, the ruby-mysql gem is my db adapter
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<Phrogz> Aw. So sorry.
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<SullX> what adapter are you speaking of?
<ddv> SullX: are you ignoring me?
<Phrogz> ddv: This is more of a db adapter question than Sinatra, and it's wholly Ruby anyhow.
<ddv> #sinatra is a far better place though
<Phrogz> SullX: with Sinatra that'd be DB[item.to_sym].all and sanitized.
<apeiros_> sequel
<Phrogz> Er, yeah. That.
<apeiros_> :)
<apeiros_> gn8
<Phrogz> Be well.
<SullX> thanks Phrogz
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<robert_> shevy: hai. :D
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<nobitanobi1> How can I consume specific parts of an array? Say, I want to get just from index 3 to index 4
<nobitanobi1> or from index 3 to index X
<nobitanobi1> like an each with inferior and superior limits
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<ddv> nobitanobi1: you mean array slicing?
<ddv> nobitanobi1: use a range
<ddv> nobitanobi1: .., or ...
<nobitanobi1> mmm, yeah but I don't even want to perform the slice
<nobitanobi1> I want to do additions of the values
<nobitanobi1> by ranges..
<nobitanobi1> like... add_from_3_to_10 + ...
<nobitanobi1> sorry
<nobitanobi1> add_from_3_to_10 = each from 3 to 10
<nobitanobi1> basically I am creating an histogram of intervals
<nobitanobi1> from values in an array
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<nobitanobi1> oh, I see this: a[1..3]
<nobitanobi1> awesome
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<ddv> yes
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<audrius> is this possible to add methods to mixins(modules) just like to classes.
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<ddv> audrius: you can add methods to modules yes and use the module as a mixin if i'm not mistaken
<ddv> not sure if method is the correct, more like a global function
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<ddv> audrius: why don't you just try :)
<audrius> ddv, got error "Enumerable is not a class" don't know how to start
<nobitanobi1> How would I do a oneliner to add the values of the hashes inside an array. Like [{"id" => 1, "value" => 5},{"id" => 2, "value" => 10},..] --
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<audrius> how will i add method to such a object "[1,2,3,2,1]" ?
<shevy> yo robert_
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<robert_> blah.. is there any reason why http://pastebin.com/WaCUw4KR refuses to do anything with VersionBlock?
<nobitanobi1> Anyone can help me with this: How would I do a oneliner to add the values of the hashes inside an array. Like [{"id" => 1, "value" => 5},{"id" => 2, "value" => 10},..] --
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<robert_> shevy: how goes? :D
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<cout> nobitanobi1: a.inject { |h,t| t['value'] + h['value'] }
<nobitanobi1> cout I have done this: map{|bucket| bucket.value}.reduce(:+)
<nobitanobi1> going to try it though
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<cout> nobitanobi1: bucket['value'], but yeah
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<nobitanobi1> I find difficult to understand how inject works
<cout> me too :(
<nobitanobi1> you just give "two values" h, t?
<nobitanobi1> when accessing arrays by ranges I have to specify the limit always right? I can't do stuff like a[2..]
<nobitanobi1> meaning from 2 to the end
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* robert_ notify-spams shevy :P
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<eignerchris> nobitanobi: you can do [0..-1]
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<nobitanobi> uhm, nice eignerchris
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<robert_> eignerchris: hi. got a few minutes to read over some code I have on a pastebin?
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<eignerchris> robert_: maybe. shoot me a link
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<robert_> eignerchris: http://pastebin.com/WaCUw4KR
<eignerchris> robert_: something not working? it's hard to read. the only case for camel case is in class/module names typically. everything else is underscores
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<robert_> I'm experimenting with trying to get (more or less) an add-in system working where I don't have to manually add a reference to my add-in to some collection somewhere
<robert_> but it doesn't seem to be registering the version information correctly
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<shevy> robert_ hey sorry, awfully busy right now
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<robert_> it's fine.
<robert_> I'm just hanging out here while I'm working on this concept code
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<shevy> hehe
<robert_> :p
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<robert_> eignerchris: better? :p
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<eignerchris> robert_: a bit ya. thanks
<robert_> yup. :D
<robert_> I kept VersionInfo camel-case because of the class it's pretending to be
<robert_> heh
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<zul_> hi all
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<zul_> I get "stack level too deep (SystemStackError)" when I do padrino rake dm:create ( I Use rvm 1.9.2)
<robert_> zul_: #padrino
<zul_> ok sorry
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<robert_> nahj
<robert_> nah*, it's just they can help you more with their framework. :p
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<zul_> mmm nobody help me in that channel.. few people there
<robert_> wait around
<zul_> ok guys
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<eignerchris> robert_: cleaned this up a bit. you dont need to define all the setters if you use attr_accessor
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<robert_> yeah
<robert_> I was going to move those back into accessor
<zul_> robert are you in padrino channel?
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<robert_> yes
<zul_> uhh
<robert_> I've used the library a bit
<zul_> this is for me the first time
<robert_> eignerchris: I kept it VersionBlock because it's shadowing the class
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<Phrogz> shevy: Was it you working on Sinatra authentication earlier?
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<Phrogz> nobitanobi: a.inject{ |h1,h2| h1.merge(h2){ |a,v1,v2| v1+v2 } }
<Phrogz> (Late answer.)
<sullx-away> Phrogz: haha, I was just writing the one liner myself 2 hours later :P
<nobitanobi> hehe, thanks
<robert_> Phrogz: any ideas about my issue? heh
<Phrogz> robert_: What's your issue? Can you summarize?
<Phrogz> (Leaving in 5 minutes.)
<robert_> oh
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<robert_> I'm trying to write an add-in system using instance_eval and for some reason the instance of the VersionInfo class that's getting bound to the AddIn class isn't getting populated
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<Phrogz> I don't know what an "add-in" system is, nor what the VersionInfo or AddIn classes are :/
<robert_> Phrogz: <eignerchris> http://pastebin.com/s54g10Jv
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<Phrogz> robert_: Line 37 calls line 26 which creates a new version block, but the block you are passing isn't passed along.
<Phrogz> Lines 38-43 are never executed, I believe. You need the method on line 26 to accept the block and yield to it.
<Phrogz> (Or instance_eval it, as you did earlier.)