apeiros changed the topic of #ruby-lang to: Ruby 1.9.3-p374: http://ruby-lang.org (ruby-2.0.0-rc1) || Paste >3 lines of text on http://gist.github.com
<UziMonkey> well... [1,2,3,4].each_slice(2).map{|s| s.join(' - ') }.join('<br>')
<UziMonkey> I literally just did something almost just like that
<zenspider> yup yup
<emmdeeess> wow, that worked perfect
<UziMonkey> ;)
<emmdeeess> amazing, thanks
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<lianj> is closing br tags overrated?
<emmdeeess> good call
<UziMonkey> is it necessary in HTML?
<lianj> hm looks like the world moved on and br is fine now
<UziMonkey> I thought only XHTML had such nonsense
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<UziMonkey> I mean, you can do it in HTML 4 or 5, but you don't need to
<havenwood> emmdeeess: Another way: pairs = [1, 2, 3, 4]; Hash[*pairs].map { |k, v| "#{k} - #{v}<br>" }
<havenwood> emmdeeess: oops, forgot a `.join` at the end.
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<UziMonkey> That'll work, but I don't like it :P
<UziMonkey> and it only works because Ruby's hashes are magic, and pull keys out in the same order you put them in
<UziMonkey> it seems silly to put it into another data structure when you already have them in key/value pairs (albeit in an array)
<lianj> since 1.9
<havenwood> UziMonkey: Doesn't seem very magic to me.
<UziMonkey> havenwood: most hashes don't seem to work that way, and it's magic because I don't know how it does it
<havenwood> UziMonkey: Your way they turn into an enum, mine they turn into a hash. Can't keep it an array.
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<UziMonkey> right, but an enum is just another view of the array, not a new data structure. But it's not important
<havenwood> UziMonkey: side-by-side: https://gist.github.com/havenwood/4718992
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<UziMonkey> I wasn't aware this was code golf
<zenspider> hashes aren't magic.
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<havenwood> UziMonkey: I wasn't trying to golf. :P
<kshah> I'm having problems querying for a problem I'm trying to solve. I have a list and want to assign each member of that list a pair who is also a member of that list but not-itself and there should only be a single ring. That is [1, 2, 3] => [[1,3], [2,1], [3,2]] but not [1, 2, 3] => [[1,2],[2,1],[3,3]] and not [1, 2, 3, 4] => [[1,2],[2,1],[3,4],[4,3]]
<UziMonkey> I tried to benchmark it, but yours crashes, stack level too deep on a 1_000_000 long array :(
<kshah> does anyone have an idea of what type of problem that is?
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<UziMonkey> I read that twice and I don't get what you're trying to do
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<andrewvos> kshah: A problem needs a loop?
<andrewvos> kshah: Amd maybe an if statement for good measure.
<kshah> andrewvos: sure, I can iterate over the list, and I could just shift the list, I neglected to mention random assignment
<UziMonkey> this may be a bit... retarded. a = [1,2,3]; a.zip( a.rotate(a.length-1) )
<kshah> I forgot to mention random assignment.. my bad
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<andrewvos> kshah: Random assignment?
<kshah> andrewvos: that is, every item on the list should not be assigned an adjacent number on the list, it should be random
<UziMonkey> or this, rather. a = [1,2,3]; a.zip( a.rotate(-1) )
<UziMonkey> but your test case has the numbers adjacent?
<UziMonkey> I'm still confused
<andrewvos> UziMonkey: Dude that only works with areays that have three items
<kshah> it's an arbitrary sized list
<andrewvos> kshah: Use Array#sample.
<UziMonkey> andrewvos: does it? it works with a 1..10 for me..
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<kshah> although your single line zen was most impressive
<zenspider> kshah: homework?
<kshah> zenspider: no a game I'm making
<andrewvos> UziMonkey: Ah ok.
<zenspider> almost sounds like graph theory?
<kshah> andrewvos: Array#sample could create two circles
<UziMonkey> andrewvos: I don't actually understand what he's asking, I'm just trying to match his sample :P
<zenspider> you're generating unique paths (edges) through a list of nodes?
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<kshah> the real world example is this: a game of assassins where everyone has to assassinate a target, and then take over that persons target
<zenspider> I dunno. I had a workout. my brain is way mushy
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<andrewvos> And then?
<kshah> the list is a list of people, and I want to assign them randomly because I have to account for the fact that people who know each other already are likely to assign up in in order
<zenspider> but this DOES sound like graph theory
<UziMonkey> yes, it does
<kshah> but I want to make it achievable for someone to kill *everyone*, but if there are multiple "circles" then that would not be possible
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<andrewvos> Ok on that note, I'm going to sleep.
<zenspider> if you make a fully connected graph (think a circle with every node connected to every other) then remove the outer edges (adjacent node edges), isn't that what you're talking about?
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<kshah> I think the outer edge is the only layer I'm concerned with, no?
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<zenspider> oh. if so, I misunderstood
<zenspider> then yeah. a plain ring would be fine, no?
<zenspider> nodes.shuffle.each_cons(2)
<zenspider> then you just need to add first and last
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<kshah> let me try something
<kshah> and zenspider thank you
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<zenspider> a = [1, 2, 3]; b = a.shuffle; b << b.first; b.each_cons(2).to_a # => [[1, 3], [3, 2], [2, 1]]
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<UziMonkey> um.. wow, I didn't know about each_cons :P
<kshah> yeah, neither did I :)
<kshah> baller
<UziMonkey> I did a.zip( a[1..-1] ).each before :P
<UziMonkey> now I feel foolish
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<kshah> wow dude
<kshah> that is it
<kshah> no internal loops
<zenspider> yay for functional style!
<UziMonkey> kshah: you can make visual graphs of these things as well. http://ruby.about.com/od/tasks/ss/Making-Digraphs-In-Ruby.htm
<zenspider> that isn't quite the same as your original description... but it works, no?
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<zenspider> yay for the graph gem!
<kshah> zenspider: it may not have matched the original description but it provides the intended behavior
<kshah> thank you so much, awesome
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<postmodern> zenspider, i tried using gauntlet but i can't seem to get it to work
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<postmodern> zenspider, even tried copy/pasting the example from the README
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<savagecroc> hey.. does this loop look ok.. or is there a better way of doing it?
<savagecroc> whoops forgot to paste the link
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<ryanv-raptor> savagecroc: looks fine to me
<ryanv-raptor> I'm not sure how people feel about "break" but you could simplify like this:
<ryanv-raptor> exactly
<ryanv-raptor> wow
<ryanv-raptor> read my mind
<savagecroc> yeah i think we had the same idea.. haha
<savagecroc> but yeah thats much nicer.. the first one looked a bit ugly (for ruby that is)
<ryanv-raptor> then you can remove the password_length_ok variable up top
<savagecroc> whoops.. missed that, thanks
<ryanv-raptor> not sure about what the "ask" method does, but if i'm inputting a password i'd want echo to be false
<savagecroc> yeah i want echo true.. it's not like people can memorize random 30 character passwords over your shoulder
<ryanv-raptor> I mean, I get what it probably does
<ryanv-raptor> ah
<savagecroc> also this only gets setup on server isntallation so it's kind of rare
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<ryanv-raptor> makes sense then
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<KINGSABRI> hello everybody
<KINGSABRI> I need to find index of all matches pattern not just 1st one
<KINGSABRI> like ,,
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<KINGSABRI> c= "congratualations" # the "n" locations are c[2] and c[14]
<savagecroc> s.enum_for(:scan, /whatever/).map { Regexp.last_match.begin(0) }
<KINGSABRI> savagecroc, fast and working :)
<savagecroc> nice
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<KINGSABRI> savagecroc, I never worked with enum_for before ,, I'll read about it more
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<KINGSABRI> savagecroc, btw ,, I found many ppl working with "map" instead of "each" , why?
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<firefux> they are different
<savagecroc> each does a loop
<savagecroc> map creates an array
<savagecroc> you sure your not thinking of the difference between map and collect?
<firefux> KINGSABRI: learn to use ri
<KINGSABRI> firefux, yes i'v :( >> always using web docs
<KINGSABRI> yes savagecroc Im talking about each and map ,, many short solutions were using map instade of each
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<KINGSABRI> guys, is it normal, a small piece of code could make you suffering for days? of just happening for beginners ?
<drbrain> KINGSABRI: for everyone
<KINGSABRI> drbrain, thanks, that's really encourage me :)
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<ggreer> I think there has to be something seriously wrong with you in order to do this work. A normal person, once they've looked into the abyss, will say, "I'm done. This is stupid. I'm going to do something else." But not us, 'cause there's something really wrong with us. -- Douglas Crockford
<felipe_Brz> hasn't that guy written a book on javascript?
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<firefux> yes, the good parts
<ggreer> yes
<felipe_Brz> funny I was talking about that book at work today, saying how it is a not so thick book due to javascript not having that many good parts to talk about hehehhe
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<ggreer> http://www.youtube.com/watch?v=taaEzHI9xyY#t=26m50s <-- source of my quote
* firefux has the book but is waiting to be more confortable with Ruby
<firefux> +com
<felipe_Brz> funny I had pictured him as a young guy
<felipe_Brz> whatever
<firefux> felipe_Brz: people compare it to the "JS the definitive guide" which is stupid
<firefux> since that books covers a lot more
<firefux> err book
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<felipe_Brz> so he aparently has some good stuff to say apart from knowing a lot of javascript
<felipe_Brz> didn't know that
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<ggreer> yeah, he's a pretty cool dude
<ggreer> javascript is a pretty crazy language, so a lot of his advice is most relevant to that
<felipe_Brz> good to know
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<felipe_Brz> dang why can't I split my brain in two and allocate one half to listen to this lecture and the other to keep coding hehe
<ggreer> I like listening to programming lectures or reading later at night, when I'm rather tired
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<felipe_Brz> good idea
<felipe_Brz> mobile devices are good for that, that might be the one reason that makes be get a tablet or something like that
<ggreer> and now you can jailbreak them :)
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<ggreer> I wish I could speed youtube videos up a bit. 1.4x is pretty comfortable for me
<felipe_Brz> you know
<felipe_Brz> if you look at some videos from coursera
<felipe_Brz> if you're using html5 videos you can do that
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<felipe_Brz> it's probably easy to do
<ggreer> if I had more willpower I might download them and speed them up in vlc
<felipe_Brz> perhaps if you switch to html youtube video player I think you can select that in preferences
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<KINGSABRI> Regarding to OptionParser , I need one switch take 2 args like "-c arg1 arg2" without ',' bcz converting sw to Array forces user to make arg1,arg2
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<UziMonkey> that's not generally how switches work though
<UziMonkey> you could do -c arg1 -c arg2 easily, or leave arg1 and arg2 in argv after you parse! the arguments
<UziMonkey> I don't think what you're asking is possible on OptionParser
<KINGSABRI> UziMonkey, thanks , I found this one too | http://stackoverflow.com/posts/2737822/revisions
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<UziMonkey> yeah, you're going to need some kind of hack to do that. personally I'd manually grab those from ARGV instead of a hack like that
<UziMonkey> if only because I'd understand the code to extract the arguments better than some OptionParser hack I won't understand in a week
<postmodern> KINGSABRI, quote the arg "arg1 arg2"
<postmodern> KINGSABRI, also OptionParser supports parsing Arrays of Strings
<KINGSABRI> postmodern, agree but it force me to use particular way to send me args : arg1,arg2
<KINGSABRI> I need user to be free to insert : arg1 arg2
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<postmodern> KINGSABRI, you can define your own custom OptionParser types
<postmodern> KINGSABRI, OptionParser.accept(Foo, /.../) do |match,...|
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<KINGSABRI> postmodern, I'll search for example about it , docs not so clear to me ..
<postmodern> KINGSABRI, better to open optparse.rb and scroll to the bottom where it defines Boolean and Array formats
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<UziMonkey> I dunno, you can do it with regexp. ARGV.join(' ').match(/(?<=-c )[^-]+(?=-)/).to_s.split But that's pretty unreadable
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<UziMonkey> I might even do something like this: ARGV.select{|a| a if (a =~ /^-c/)..(a =~ /^-[^c]/) }[1..-2]
<UziMonkey> but that's unreadable too :P
<KINGSABRI> UziMonkey, lool
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<savagecroc> "0.75 * avaliable_memory" << how do i substitue a value for avaible memory and evalutate it
<savagecroc> eval("0.75 * available_memory".gsub!('available_memory', '2')) << that good enough?
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<drbrain> eval sounds like a bad idea
<savagecroc> yeah :/
<savagecroc> it is all trusted code but still
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<savagecroc> actually.. maybe it doesn't matter in this case
<savagecroc> if you are running this code or changing anything.. you pretty much have god privileges anyway
<savagecroc> i.e. you have to have a user account on each server with sudo access
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<drbrain> where is this 0.75 * available_memory line?
<drbrain> why do you need to replace the value?
<savagecroc> ok so there's a yml configuration file which defines how much avaliable memory there is for postgres per server
<savagecroc> that line is on several lines through the yml
<savagecroc> e.g. effective_cache_size: 0.75 * available_memory
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<drbrain> do you want to test it?
<drbrain> if so, def available_memory() 5 end
<savagecroc> avaliable_memory: 3000
<savagecroc> is also in the yaml file
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<drbrain> do you want to test it?
<savagecroc> yes
<savagecroc> although i can do that by passing the function the test yaml
<savagecroc> and then regexing the reponse
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<savagecroc> response*
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<drbrain> seems like a safe way to do it then
<savagecroc> ok :)
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<injekt> drbrain: good catch :)
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<drbrain> damn that 1.8!
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<injekt> heh, writing the new hash syntax has become habit now
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<chekcmate> mornin
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<judofyr> hey folks
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<injekt> morning
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<yorickpeterse> morning
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<injekt> blargh
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<chekcmate> hash = Hash[*array] How nice is THAT? Awesome!
* chekcmate readsThe Ruby Way
<rue_XIW> chekcmate: Nothing special about it
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<rue_XIW> Although I think that there’s a Hash[array] now too
<injekt> that shouldn't work if there's more than 1 arg?
<judofyr> rue_XIW: Hash[array] doesn't work here
<chekcmate> rue_XIW: I'm still a beginner, so I find that pretty cool tbh
<rue_XIW> injekt: It’s awful early to be high :)
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<injekt> ah they just have to be even of course
<injekt> rue_XIW: sleepy!
<rue_XIW> chekcmate: The splat just makes [1,2] -> 1, 2, and Hash.[] takes an even number of arguments, making pairs from each :)
<kith_> Hash[*array] <--whats that supposed to mean?
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<chekcmate> rue_XIW: yea, the peeps here told me about splat yesterday, discovering the possibilities right now heh
<judofyr> kith_: if array = [1, 2, 3, 4], then Hash[*array] is the same as Hash[1, 2, 3, 4]
<injekt> splattarrr
<rue_XIW> judofyr: Hash[[[1, 2], [3,4]]] ?
<chekcmate> injekt: watch meatball machine
<judofyr> rue_XIW: oh cool. I tried Hash[[1, 2, 3, 4]]
<kith> hmm i dont get it :D
<judofyr> kith: what part?
<kith> index of hash is an array?
<judofyr> ah, no
<judofyr> by Hash[*array] we mean literally Hash[*array]
<judofyr> not a = {}; a[*array]
<chekcmate> [1,2,3,4] => 1,2; 3,4 => k,v
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<judofyr> kith: it's a class method, not an instance method
<chekcmate> injekt: probably one of the greatest movies ever made
<kith> hmm
<chekcmate> injekt: next to story of ricky
<injekt> story of ricky is better than meatball machine
<chekcmate> it is, sure
<chekcmate> but they're both fun to watch
<injekt> :)
* chekcmate has to fix oracle db now ._. meh...
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<UziMonkey> is my code starting to look uncomprehensible? https://gist.github.com/mmorin/4721575
<UziMonkey> *incomprehensible, it's also late that that took longer than expected :P
<rue_XIW> Yes, those replaces are hard to read
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<rue_XIW> So are the magical numbers you have there
<UziMonkey> which magic numbers? I only use 26 really, the number of letters in the alphabet
<rue_XIW> Oh THAT’s what that is!
<rue_XIW> ;)
<UziMonkey> hmm..
<UziMonkey> my unit test for this isn't longer than the code it's testing, something is wrong :P
<injekt> i dunno, the encrypt/decrypt methods look more confusing too me, and contain a lot of duplication
<injekt> eh unit tests shouldn't be longer than the code you're testing
<UziMonkey> I tried to DRY that up, but there were subtle differences
<UziMonkey> that part was a joke, but I'm wondering if minitest does coverage
<injekt> no
<injekt> use simplecov
<injekt> ah rubyquiz
<injekt> i remember doing all those
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<UziMonkey> I always started them, but never finished
<UziMonkey> I found /r/DailyProgrammer, but their challenges seem to be mostly... lame
<injekt> yeah JEG and others came up with nice stuff for rubyquiz
<injekt> then it all went to shit in rubyquiz2
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<UziMonkey> simplecov is great, thanks
<UziMonkey> I didn't test my cardname methods, that's all
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<UziMonkey> but I don't use them either :P
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<savagecroc> does anyone else make tons and tons of functions for Hash and String and Array :)
<savagecroc> i've got about 60 now
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<andrewvos> savagecroc: But there are so many good ones.
<savagecroc> i know!
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<savagecroc> these are just the ones i added today
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<savagecroc> ah string ones not right.. but meh, you get the idea ;)
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<injekt> mother of indentation
<savagecroc> haha
<savagecroc> it's indented perfectly on my machine
<savagecroc> something about copy and paste didn't work
<heftig> the to_s in the first one is useless
<injekt> yeah new gist sucks for that
<heftig> if it's not a string, it won't work anyway
<injekt> also 4 space indents? psh
<savagecroc> yeah.. i like 4 space indents
<savagecroc> 2 space is too small especially for deeply nested stuff
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<injekt> lie, 2 space is perfect
<savagecroc> ah actually
<savagecroc> lol.. 4 spaces.. harder to read :)
<injekt> 4 space is like 3 indent levels omg where is my code
<savagecroc> and you don't save that much space
<savagecroc> i used to make everyone do 2 spaces
<savagecroc> 4 years ago
<savagecroc> but then i changed my mind :)
<injekt> you changed it wrong!
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<injekt> also modify: Hash[map { |k, v| yield(k, v) }]
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<savagecroc> oh shit.. good point
<injekt> tbh most of them can be made a little more concise but they're ok
<savagecroc> yeah i always prefer easy-to-read
<savagecroc> some ruby functions are a bit too concise.. but yeah.. i shouldn't be reassigning it
<injekt> also methods
<savagecroc> yep functions
<injekt> nope methods
<savagecroc> haha.. just kidding.. i always forget the difference
<injekt> methods are functions bound to an object
<savagecroc> ah right
<injekt> and in ruby everything is bound to an object
<injekt> unless you unbind it
<savagecroc> can you have functions not bound to an object?
<injekt> methods
<injekt> :D
<savagecroc> oh yeah
<savagecroc> can you have functions in ruby?
<savagecroc> also this nomenclature, is that ruby or general computer science?
<injekt> well
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<injekt> methods can be unbound but they can't be called until they're bound
<injekt> and it's general programming
<UziMonkey> I just installed RubyMine, I haven't really used it yet but I'm quite impressed
<injekt> yuck
<savagecroc> can you give me an example of an unbound method in ruby?
<injekt> m = method(:puts).unbind
<savagecroc> i thought it would always be bound to something.. like a class or a module or an object
<injekt> m #=> UnboundMethod(:puts)
<judofyr> savagecroc: to_s = Object.instance_method(:to_s)
<judofyr> savagecroc: that method represents the #to_s-method, but it's not bound to anything, so we can't actually call it
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<judofyr> savagecroc: to_s.call doesn't make sense because there's no self
<savagecroc> right.. unless your trying to confuse the hell out of some developers.. what's a use case?
<UziMonkey> right, you have to manually unbind it. And I don't really know why you'd do that
<savagecroc> UziMonkey: haha
<injekt> to rebind it
<savagecroc> oh seriously i've got 1 dev who likes to play the game.. how complicated can i make the code
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<judofyr> savagecroc: you can use it to override: old = instance_method(:foobar); define_method(:foobar) { old.bind(self).call; puts "after" }
<savagecroc> recursive / nested / method_missing everywhere.. was horrible
<savagecroc> judofyr: oh yes.. thats a good usecase
<judofyr> savagecroc: it has it usecases, but yeah, you shouldn't see it in "regular" code
<savagecroc> judofyr: like if you were writing a testing library and you wanted to write a mocking interface
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<UziMonkey> I installed RubyMine for one reason though, a visual debugger
<UziMonkey> something I've always missed in Ruby...
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<injekt> my debugger is the p method
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<UziMonkey> I only tried it out real quick, but it seems to work great
<savagecroc> UziMonkey: i used netbeans for about 4 years before oracle screwed it.. i'm currently using sublime text.. are the debugging advantages that much better?
<UziMonkey> which is a pain in the ass :P
<UziMonkey> savagecroc: well debugging is awesome, so... yet?
<savagecroc> yeah.. i ap lots of shit to debug
<savagecroc> how new is this IDE?
<UziMonkey> *yes. Ruby doesn't lend itself to debugging as much as many other languages (like C), since you can isolate and test your code at a finer level
<savagecroc> and does it run on linux :/
<UziMonkey> but debugging si always useful
<UziMonkey> of course it does
<UziMonkey> it is written in Java, but I run Linux on VMWare and even there it's really responsive
<savagecroc> pfft lots of shit doesn't run on linux
<UziMonkey> it integrates with git, and even RVM
<savagecroc> ohhhh
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<savagecroc> now the important questions
<savagecroc> does it support multiple cursers?
<UziMonkey> ah, the sublime feature
<savagecroc> yeah.. i couldn't live without that now
<UziMonkey> I don't think so, but it has refactors
<savagecroc> i use it every 5 - 10 mins
<UziMonkey> I don't know though
<savagecroc> i know multiple cursers is going to make it's way into every IDE
<injekt> <3 multiple cursors
<UziMonkey> probably
<savagecroc> then the vim nazi's can get screw themselves, because it'll be much slower
<savagecroc> injekt: what ide do you use?
<injekt> savagecroc: i use st2 as well
<UziMonkey> I was actually thinking about buying Sublime a while ago, but RubyMine is more or less the same price
<savagecroc> ahh i found the most awesome binding let me find it for you
<UziMonkey> but sublime is probably more solid as an editor, but hey, I just did that RubyQuiz in gedit, so I'm not particular about that :P
<injekt> i use vim too
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<judofyr> vim \o/
<injekt> but prefer st2 for entire projects
<ggreer> st3 cleans up quite a few annoyances for plugin developers, but I haven't noticed any big differences from st2 yet
<judofyr> Rails.vim is so good for Rails projects
<savagecroc> injekt: what os are you on?
<injekt> judofyr: I never liked it much :S
<injekt> savagecroc: osx
<savagecroc> { "keys": ["ctrl+shift+up"], "command": "select_lines", "args": {"forward": false} } and { "keys": ["ctrl+shift+down"], "command": "select_lines", "args": {"forward": true} },
<UziMonkey> I like Vim with NERDtree, whatever I use it needs a file tree on the left now :P
<injekt> ggreer: st3 is so broken for me
<judofyr> injekt: why not? it makes gf useful and :R is just king
<ggreer> how so?
<savagecroc> and then go into the osx key settings, and disable whatever it's used for at the momemnt
<injekt> judofyr: I guess, I think it's less rails.vim fault and more because i never found a REALLY good replacement for cmd-t
<judofyr> ggreer: (btw, you're the ag-guy right?)
<savagecroc> those two bindings i use constantly
<ggreer> yes
<injekt> ggreer: if I open a dir in st3, it opens all the files separately in new st3 instances
<judofyr> ggreer: good. then my memory isn't broken!
<ggreer> ah yeah, that's annoying
<judofyr> injekt: CtrlP here, but with a custom matcher
<ggreer> you have to use the project api
<UziMonkey> I don't understand how GTK can be so unresponsive
<ggreer> which isn't documented yet :/
<injekt> ggreer: even for dirs?
<injekt> no 'projects' in the native sense
<injekt> not*
<ggreer> I haven't figured it out completely yet
<ggreer> sublime.active_window().set_project_data({'folders': [{'path': '/path/to/stuff'}]})
<savagecroc> what's st3 got?
<injekt> heh
<ggreer> is how I add a folder to a project in st3
<injekt> I didn't notice much different between st2 and 3
<ggreer> running subl from the command line seems to open another instance of st3, which is really annoying
<savagecroc> hmmm
<savagecroc> probably a beta issue
<ggreer> I assume that will be fixed eventually
<ggreer> yeah
<injekt> ggreer: yeah that's how im using it
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<savagecroc> i like binding sublime to s so i can go s. s /etc/conf etc
<injekt> subl is pretty quick to type :)
<savagecroc> yeah still.. use it all day
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<UziMonkey> shit, what was the color scheme I used?
<UziMonkey> solaris... something
<ggreer> you mean solarized?
<UziMonkey> that's the one
<UziMonkey> I miss Solaris, I used to have a crappy Sun machine
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<savagecroc> we used to run solaris back at uni
<savagecroc> with these thin clients
<savagecroc> i think one guy brought down the entire system with 1 line
<UziMonkey> lol
<savagecroc> it had the word fork in it
<UziMonkey> bad admins probably... I remember we had a shared Linux machine adn someone forkbombed it
<UziMonkey> unintentionally
<UziMonkey> but it wasn't hard to bring a Pentium 133 down
<savagecroc> haha
<savagecroc> yeah good point.. i have no idea how powerful these machines would have been
<savagecroc> probably a lot less than my phoe
<savagecroc> phone*
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<UziMonkey> there we go, I solarized RubyMine
<UziMonkey> I wish it wouldn't start maximized though, VMWare unity doesn't like that
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<UziMonkey> OK, minor strike against it, nothing major... when I hit debug it wants to debug my IRB session
<manveru> hehe
<manveru> i just had to dig out rubymine to be able to make any sense of that rails codebase i work on...
<manveru> them rabbit holes are deep
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<masterkorp> ÇÇ
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apeiros_ changed the topic of #ruby-lang to: Ruby 1.9.3-p385: http://ruby-lang.org (ruby-2.0.0-rc1) || Paste >3 lines of text on http://gist.github.com
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<zzak> :D
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<matti> zzak: ;]
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<foucist> original_string = "Hello, "; hi = original_string; there = "World"; hi += there;
<foucist> shouldn't original_string = "Hello, World" ? shouldn't hi be a pointer to the same string that original_string points to?
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<foucist> it's not behaving like that in this case
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<apeiros_> + creates a new string
<apeiros_> += creates and assigns a new string
<apeiros_> original_string.object_id != hi.object_id
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<foucist> ah right thanks
<apeiros_> you want <<, not +=
<foucist> was thinking it was more of a << lol
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<foucist> apeiros_: any idea why 1.9 dropped the ?a syntax
<judofyr> foucist: hm? the ?a syntax is still there
<judofyr> foucist: ?a # => "a"
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<foucist> judofyr: in 1.8 it returns the ascii value
<foucist> i.e. 97
<judofyr> foucist: yes. it's because String#[] in 1.9 returns a string
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<apeiros_> yeah, 1.9 just uses retarted for ?a syntax
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<apeiros_> foucist: it's to keep scripts from breaking due to the other change, 'x'[0] #=> 'x'
<foucist> judofyr: hmm? you mean ? is an alias for #[] ?
<ryanv-raptor> ok, I have to know, what is the ? operator and where is it defined?
<ryanv-raptor> I have never seen that
<apeiros_> so this is valid in 1.8 & 1.9: 'x'[0] == ?x
<judofyr> foucist: no, but a lot of code was like this: foo[0] == ?x
<apeiros_> ryanv-raptor: not an operator. it's syntax.
<judofyr> I don't quite see why String#[] had to return a string though
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<foucist> ah
<apeiros_> judofyr: me neither.
<apeiros_> they could at least let .ord take an argument. now you've to call 2 methods…
<ryanv-raptor> so what's its use? Obviously it returns the character either as a string or the char code (per your discussion here)
<judofyr> apeiros_: it doesn't do any normalization anyway: "e\u0301"[0] == "e"
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<judofyr> (that is e + COMBINING ACUTE ACCENT)
<judofyr> which is one grapheme, but two characters
<ryanv-raptor> never mind, I think I figured it out, I'm guessing it's Ruby's way of definining a character literal?
<ryanv-raptor> s/definining/defining/
<judofyr> ryanv-raptor: yes. it was more useful in 1.8 where it returned the ASCII code
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<judofyr> ryanv-raptor: because you could do: if foo[0] == ?X; puts "foo starts with X" end
<ryanv-raptor> ah, that makes sense then
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<ryanv-raptor> I'm convinced that I could learn something new about ruby every day
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<zzak> :D
<apeiros_> I think it was also used in conjunction with File.test
<apeiros_> to emulate bash' test
<foucist> heh, Symbol.all_symbols.include?(:fooaldafdadsfassa) is always true for any random symbol, due to the interpreted nature of ruby i suppose
<yorickpeterse> No, because it creates the symbol first
<apeiros_> order of execution…
<yorickpeterse> And as such it's then in the list
<judofyr> actually no. just having the symbol later in the script will cause it to be included in Symbol.all_symbols
<judofyr> ruby -e'p Symbol.all_symbols.size' vs ruby -e'p Symbol.all_symbols.size; foo'
<judofyr> err
<judofyr> ruby -e'p Symbol.all_symbols.size' vs ruby -e'p Symbol.all_symbols.size; :foo'
<judofyr> it's the parser that interns it, not the VM
<yorickpeterse> neg, different values for me
<judofyr> (or maybe the bytecode compiler; not sure)
<apeiros_> 'foo'.to_sym
<apeiros_> enjoy
<yorickpeterse> ruby -e'p Symbol.all_symbols.size;' => 1859
<yorickpeterse> ruby -e'p Symbol.all_symbols.size; :foo' => 1860
<yorickpeterse> oh wait
<yorickpeterse> wat
<apeiros_> yorickpeterse: that's what judofyr was saying
<judofyr> yorickpeterse: that was my point :)
<yorickpeterse> the
<yorickpeterse> the fuck is this shit
<apeiros_> parse-time is
<yorickpeterse> riiiiight, that sounds like a rather weird thing to do
<yorickpeterse> Hm, then again it would probably reduce the amount of required actions to get the value
<apeiros_> why? symbols are the internal representation
<yorickpeterse> and determine if it exists
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<judofyr> if a symbol exists in the source, there's a pretty good chance that it will be "executed" some time
<judofyr> I've always wanted Symbols to be frozen strings…
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<yorickpeterse> judofyr: they pretty much are
<judofyr> yorickpeterse: I mean :Symbol.is_a?(String)
<yorickpeterse> Ah
<judofyr> => true
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<foucist> bah, \W isn't the reverse of \w "test 42"[/w+/] #=> "test" but "test 42"[/\W+/] != " 42"
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<judofyr> foucist: \w is [a-zA-Z0-9_]
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<judofyr> foucist: so that seems correct
<foucist> judofyr: hmm? it doesn't grab "42" though ?
<judofyr> foucist: because 0-9 is part of \w
<foucist> oh nevermind it does
<foucist> woops
<judofyr> :)
<foucist> "bovine vines"[/vine./] <- doesn't grab "vines" what's up with that?
<foucist> i suppose i should look at how Match regexp is different
<manveru> first amtch
<judofyr> foucist: . matches anything
<manveru> *match
<manveru> you want \S or so?
<foucist> no i'm just doing the ruby koans :P
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<foucist> training my ruby muscles
<foucist> pretty nice, i didn't know about ruby koans until yesterday.. https://github.com/edgecase/ruby_koans
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<JohnnySS> i am totally new to ruby, what would be my first good resource ?
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<firefux> JohnnySS: are you new to programming also?
<JohnnySS> i would like to go to rails further down the line probably
<havenwood> JohnnySS: There is a good starter list on ruby-lang.org: http://www.ruby-lang.org/en/documentation/
<JohnnySS> no no new to programming
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<firefux> JohnnySS: get the Pickaxe book
<havenwood> JohnnySS: I've heard people recommend Learn to Program if you don't already know a language: http://pine.fm/LearnToProgram/
<RickHull> Chris Pine's Learn to Program or tryruby.org (i think)
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<JohnnySS> is this the channel for rails too ? are ruby and rails go somewhat together ?
<havenwood> JohnnySS: #RubyOnRails
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<RickHull> rails is built on ruby, it's separate
<RickHull> there are other channels for other things built on ruby
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<JohnnySS> how good should i be on ruby before i go to rails ?
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<RickHull> <----> this good ;)
<RickHull> definitely a good idea to get comfortable with ruby first
<havenwood> JohnnySS: Rails is to a Harry Potter Book as Ruby is to the English language.
<RickHull> rails is not a good way to learn programming. it makes certain things easy, but you only recognize what it's doing if you've done it the hard way
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<RickHull> if you've never done it the hard way, it won't be comprehensible. the hard way is also not "hard"
<RickHull> it's more that it's repetitive and boring after you've done it a few times
<foucist> speaking of 'hard way'
<RickHull> so rails gives you some tools to express things at a higher level
<foucist> check out "Learn Ruby The Hard Way" ..
<lianj> nooo
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<JohnnySS> i just ask for a place to begin. my goal is to start writing data driven applications correct ?
<singpolyma> rails basically hides all the important things so you can't tell what's going on unless you happen to already know
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<foucist> JohnnySS: check out "The Well-Grounded Rubyist" after you read a more basic programming book.. and then for practice, do http://rubykoans.com
<RickHull> JohnnySS: yeah that's totally reasonable
<RickHull> are you sure you want to tackle a web app as your first big project?
<lianj> yes, doing the rubykoans on your own disk is great
<RickHull> i'm not saying you shouldn't
<JohnnySS> can i do that with ruby only without go into rails first ?
<foucist> JohnnySS: and then for rails, you can read "Rails 3 In Action" or "Agile Web Development with Rails (whatever the latest edition is)"
<RickHull> for sure, rails doesn't have a monopoly on web apps
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<RickHull> you can make a web app / web server using only ruby built-ins
<JohnnySS> actually i want to avoid it RickHull
<foucist> JohnnySS: yeah do ruby first then rails.. depending on how fast you're going to try to learn this stuff... spend a few weeks or a month on ruby, then go for rails
<havenwood> JohnnySS: You can learn Ruby and make any web app you want with Sinatra. Rails is a whole n'other world, great if you need it but a lot to swallow at once.
<RickHull> if you're not sure if you need/want rails, you don't
<foucist> RickHull, havenwood.. whatever, not helpful imo
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<JohnnySS> so let me recap here if i got this right
<JohnnySS> you say that if i spend my time only to rails...
<JohnnySS> i can produce a data driven application only by itself right ?
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<RickHull> not exactly
<foucist> JohnnySS: ruby is fundamental if you want to learn rails.. lots of people did jump into rails right away.. but i definitely recommend spending some solid time learning ruby first
<lianj> you wil have a hard time and think things are magic
<foucist> JohnnySS: what kind of site do you want to make?
<RickHull> rails is purpose built for data-driven web apps
<RickHull> but you can make a command line calculator with rails if you want
<JohnnySS> data forms
<JohnnySS> and stuff like that
<JohnnySS> customer forms
<JohnnySS> lists
<RickHull> rails has a lot of nice form processing tools
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<JohnnySS> i understand taht
<JohnnySS> but its difficult to get it from the start
<RickHull> if that's your goal, i would start with ruby for a few weeks and move to rails or similar
<JohnnySS> i should learn ruby first
<havenwood> ^
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<foucist> JohnnySS: video is 2 years out of date, but it's an example of a guy making a very basic blog app in rails in 20 minutes
<JohnnySS> those videos are just demos to me
<JohnnySS> i wanna learn!!!
<JohnnySS> so i need good material to sudy
<JohnnySS> study*
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<havenwood> #RailsNoob is another channel if you want to ask super basic questions that might get frowned at in #RubyOnRails, btw.
<RickHull> learn by doing
<JohnnySS> ty havenwood
<RickHull> the videos are useful. you should follow along, doing it
<foucist> JohnnySS: railsforzombies.org is an actaul lesson, takes you through building something
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<havenwood> foucist: I recommended it for a while, since I really enjoyed it, but seems that folks who've never programmed can get overwhelmed jumping right into ORMs.
<RickHull> have a look at http://tryruby.org/
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<havenwood> +1 tryruby.org, worth the time to run through it real quick
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<JohnnySS> try ruby is one for sure
<lianj> did it already?
<JohnnySS> but is it enough u think before i go into noobchannel and rails ?
<JohnnySS> no
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<RickHull> pick a ruby tutorial and work all the way through it. then pick a rails tutorial and work through it
<JohnnySS> code school in general sounds really good to me
<RickHull> if the rails tutorial causes problems, you might revisit the ruby tutorials
<havenwood> JohnnySS: CodeSchool has what looks to be a nice Ruby primer as well.
<foucist> havenwood: that's true, rails is getting overly complicated for newbies
<JohnnySS> so after try ruby you think i ll be ready for action ???
<JohnnySS> no other resources ?
<havenwood> JohnnySS: RubyTapas: http://devblog.avdi.org/rubytapas/
<JohnnySS> how can i use rubukoans ?
<havenwood> JohnnySS: You can download the folder, go into it in your Terminal, and type `rake`. Or a quick start is to do the online version first: http://koans.heroku.com
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<lianj> do it on your local machine though
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<foucist> JohnnySS: what OS are you on
<JohnnySS> 10..8
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<JohnnySS> mountain lion
<foucist> yeah mac is good
<JohnnySS> i have already installed ruby 1.9.4p374
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<JohnnySS> ruby 1.9.3p374
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<JohnnySS> Rails 3.2.11
<JohnnySS> Rails 3.2.11
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<JohnnySS> with rvm with the help of rubygems
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<JohnnySS> i am searching some books now
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<JohnnySS> because none of the resources you gave me were good for me sorry
<JohnnySS> so i have got eloquent ruby!!!!
<JohnnySS> very nice but not for me i think at this stage
<JohnnySS> and ruby from novice to professional
<RickHull> damn JohnnySS, pretty strongheaded for a newbie. i think i like it
<ddd> The Well-Grounded Rubyist is an excellent book for new coders
<ddd> manning.com/dblack2 iirc
<JohnnySS> but the god damn torrent doesn't download!!!!!!
<JohnnySS> let me try again :P
<zenspider> torrent... because the author that worked his ass off on that book doesn't deserve money
<lianj> JohnnySS entered the trollzone
* ryanv-raptor grabs popcorn
<ddd> the books are fairly priced and WELL worth the money
<ddd> If my broke ass can afford to buy them, so can your's
<JohnnySS> i wish i could show you my library guys
<ddd> I'm more broke than a college student. I've 3 kids, a mortgage, truck payments, insurance payments, and bills.
<JohnnySS> you wouldn't say those to me now !
<RickHull> if you want free, free is out there
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<RickHull> if you want a labor of love, i'd suggest paying for it
<ddd> i would definitely say that to you if you're stealing them
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<JohnnySS> i have paid lots of money to buy technical books believe me
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<JohnnySS> but right now i don't have the time and the money
<ddd> still no excuse
<RickHull> er, labor of love is the wrong term for what i was trying to express. more like what zenspider said
<zenspider> not just worked his ass off on books... but also on our community as a whole. the man helped make ruby in the US what it is today
<ddd> prior payment has dickall to do with the current book
<lianj> please, finish rubykoans, come back then
<RickHull> use the free resources
<JohnnySS> i don't want to excuse my self..i am just saying
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<JohnnySS> and sorry if i offended some go you
<JohnnySS> of*
<ddd> i don't have the time, but i have the time to pirate it. I don't have the money, but I can afford to pay for my internet and video games and ..
<havenwood> JohnnySS: Many authors will gift you a copy in exchange for a postcard if you are financially pressed. We really do frown on stealing though, as many authors rely on the income and trust the community with DRM-free releases.
<JohnnySS> havenwood, really thanks for the info!!!
<JohnnySS> cause really i ve spend lots of money buying books
<JohnnySS> so many that i am thinking recycling some of them
<lianj> can someone grep his channel logs, think i remember his nick
<RickHull> also, the free resources are really really good, so the commercial resources really take a lot of effort to compete. it's just senseless not pay for the commercial resources. it's offensive because it harms the incentives that keep the community alive
<ddd> hell, you could even put it out on the various mailing lists that Hey I'm looking for this book. I'll trade this one and this one for that book
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<JohnnySS> ok let's go back to the free resources
<ddd> http://ruby.railstutorial.org/ruby-on-rails-tutorial-book for learning Ruby On Rails, AFTER you learn ruby, and CodeCademy.com has a free ruby course at http://www.codecademy.com/tracks/ruby plus there is rubykoans.com, http://iwanttolearnruby.com and a crapload of others
<ddd> all free
<ddd> and there's tryruby.org as well
<havenwood> JohnnySS: Did you go through the list at: http://www.ruby-lang.org/en/documentation/
<JohnnySS> havenwood, nope…now i am doing it :)
<JohnnySS> i think this is ok for now :)
<JohnnySS> i was confused before
<ddd> hah, nice try
<JohnnySS> because koans in heroku was for 1.8.7
<JohnnySS> OH COME ON MAN
<ddd> and 99% of what you learn in the koans DIRECTLY applies to 1.9.x
<foucist> rubykoans is fine for both versions of ruby (1.8 or 1.9)
<foucist> it doesn't matter what version you use
<ddd> its just an excuse
<JohnnySS> don't try to piss me off ok ?
<ddd> and you can talk to the authors for most books, as well as for paid resources like railscasts, and Ruby Tapas
<JohnnySS> i download torrents if i want to ok ????
<JohnnySS> happy ???
<ddd> you're the one stealing from the community, but we're supposed to not piss you off?
<JohnnySS> give me a break now
<ddd> hahaha
<RickHull> sure, but you might not get a great reception in here
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<ddd> hell even Practicing Ruby and Ruby Weekly will usually help you out for a bit
<ddd> that I *know*, from personal experience
<JohnnySS> guys i ask questions. and if you want, you answer me ok ?
<JohnnySS> don't play me the saints now
<ddd> you lined yourself up for it. you made the bed, now lie in it
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<JohnnySS> thank you all for the help. good bye
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<lianj> \o/~
<zenspider> what a jackass
<zenspider> and jesus... how'd we NOT answer his questions?
<zenspider> I can only hope he follows up with a passive aggressive blog post about how we're so hostile
<RickHull> (5:26:01 PM) JohnnySS: because none of the resources you gave me were good for me sorry
<RickHull> that one got me worried
<zenspider> he's beyond that
<zenspider> obviously
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<lianj> no matches in the (old) logs?
* zenspider hugs emacs
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<brianpWins> what the cmd to see the available versions of a particular gem from rubygems?
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<drbrain> gem list -ar gem_name
<zenspider> that can be really slow
<zenspider> I bet curl + grep is faster :P
<zenspider> but uglier
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<brianpWins> heh thanks guys!
<zzak> zenspider: so you can give emacs hugs, but not me??
<zzak> i see how it is
<zenspider> curl http://rubygems.org/gems/hoe/versions | grep /versions/ | cut -f2 -d\"
<zenspider> DAMN FAST
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<zenspider> zzak: you can hug the cardboard cutout instead
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<zzak> :D
<UziMonkey> d'oh! I just spent time setting RubyMine 4 up last night, and today RubyMine 5 is out
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<zenspider> UziMonkey: HAH! one more reason to use emacs! they don't release for YEARS! :P
<zenspider> (not actually true... but whatevs)
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<UziMonkey> can comes with a free kitchen sink!
<UziMonkey> I think I might be done with "editors," because this is quite nice
<zenspider> bah
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<UziMonkey> I was thinking about buying Sublime, but this is more or less the same price
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<zenspider> I thought sublime was free
<benwoody> i hated that every time i started a new project with RM, a lot of new files from the ID get included in a lot of places I don't want them
<UziMonkey> it technically is, it's nagware
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<zenspider> SEVENTY DOLLARS?!?!
<zenspider> holy shit.
<zenspider> I better get a handjob out of that deal
<zenspider> or something. dinner?
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<benwoody> i think there's a plugin for that
<RickHull> i dunno, kinda like your chair or keyboard. you spend a lot of time there
<RickHull> that said, emacs4lyfe
<benwoody> ST3 will have a new pricing point as well
<joevandyk> anyone wanting a self-contained paid ruby project that should take an hour or two? I need a pdf generated. I've got this working: https://dl.dropbox.com/u/6607107/pdf.pdf%20%28page%201%20of%204%29-2.png and want it to look like https://dl.dropbox.com/s/vj6d8933s0qmc50/packing-slip.png
<UziMonkey> eh.. I could buy a video game for that, but I'd end up spending more time on this
<RickHull> joevandyk: i'd be tempted to mock it in html. maybe generate a PDF from that
<joevandyk> RickHull: i need to be able to print out 10,000 of these at once
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<joevandyk> from what i can tell, browsers suck at that sort of thing
<RickHull> html2ps maybe
<RickHull> something like that
<RickHull> fire postscript files at the printer
<joevandyk> i've been using prawn, seems to work wel
<joevandyk> l
<benwoody> awww, i can't scan that barcode
<joevandyk> benwoody: even if you print it?
<benwoody> what am i? made of trees?
<joevandyk> lol
<joevandyk> i don't' think barcode scanners work on screens
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<benwoody> usually not a problem. i got one of them high fangled bar code apps on my phone
<RickHull> i wonder what the pdf authoring / layout is like, if prawn is more useful than html/css
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<RickHull> if the html conversion is suitable, you'll have a lot more luck hiring out for html generation i think
<RickHull> depending on how often you'd need that work done
<joevandyk> just this once. :)
<joevandyk> RickHull: http://prawn.majesticseacreature.com/manual.pdf was built from prawn
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<RickHull> fuck it, i'll take a stab at it. contacting via PM
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<theoros> is there a way i can see which gems were installed before the last time i ran gem update
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