apeiros changed the topic of #ruby to: Ruby 2.1.4; 2.0.0-p594; 1.9.3-p550: http://ruby-lang.org || Paste >3 lines of text on http://gist.github.com || this channel is logged at http://irclog.whitequark.org, other public logging is prohibited
<b3itz> lines are like: S 30 50
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<godd2> b3itz what do you want the keys to be?
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<b3itz> doesn't really matter
<b3itz> as long as i can get to them
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<b3itz> the first letter is always a shape
<b3itz> the second two will be converted to ints
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<godd2> You said you wanted each line to be it's own hash. what will the keys and values be of each hash?
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<godd2> like {square: [30, 50]} or something?
<b3itz> exactly
<b3itz> i need to read in each line, identify what shape it is, then pass the two perimeters into other functions for calculations
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<godd2> or more like {shape: "rectangle", sides: [30, 50]}
<zenspider> and you need a hash, why?
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<b3itz> correct godd2
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<b3itz> but the circle will only have a radius
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<godd2> what are you doing with idx?
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<godd2> if you don't need it (which it looks like you dont), then you don't need with_index
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<i8igmac> i have a goofy question related to threads
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<i8igmac> 100.times {|x| puts x; sleep 1}
<i8igmac> 100.times {|x| 10.times Thread.start{puts x; sleep 1}}
<i8igmac> how could you set ten threads inside this block
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<zenspider> syntax is wrong
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<i8igmac> it is
<havenwood> i8igmac: 10.times takes a block
<b3itz> can i scan through a string looking for a set of numbers like '54'?
<havenwood> b3itz: Use `warn message` in place of `STDERR.puts message`.
<havenwood> b3itz: But you'd want an error exit status so `abort message` here instead.
<i8igmac> its my question by example, 100000000.times{|x| puts x; sleep 3}
<havenwood> b3itz: yes, you can
<i8igmac> i want ten threads to speed threw that block
<havenwood> i8igmac: so you want a thread pool?
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<i8igmac> uh, i guess so...
<havenwood> i8igmac: a pool of worker threads to take jobs as they are able?
<i8igmac> yes
<i8igmac> i would like to set a limit
<i8igmac> 10, 20, 100 or what ever is needed for that instance
<b3itz> i need to be able to look through a string and grab out 1 or 2 sets of numbers
<b3itz> itll always be a string delimited by a space and then either one or two numbers or sets of numbers also delimited by a space
<i8igmac> b3itz, can you post a example string
<i8igmac> i would like to try my regex retard skills
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<zenspider> b3itz: `ri String.scan`
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<b3itz> i8igmac: S 34 76
<i8igmac> lol im stumped
<b3itz> i8igmac: C 60
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<b3itz> zenspider: whats ri?
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<havenwood> i8igmac: There are plenty of thread pool implementations to point you to if you're interested. Two related Ruby gems I'd suggest looking at that go way beyond thread pools are concurrent-ruby and celluloid.
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<havenwood> i8igmac: but they're ^ usable
<havenwood> b3itz: man ri
<i8igmac> havenwood, thanks, this is always something i want to do...
<Noobdog> I think he wants to spawn a thread army to work splits up a block of code. Similar to how OpenMP works with #pragmas
<b3itz> havenwood: man
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<b3itz> i cant find it
<havenwood> i8igmac: Maybe see what it'd look like with Celluloid.
<havenwood> b3itz: What OS are you on?
<b3itz> ubuntu
<zenspider> b3itz: ri is the tool you use to level up
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<zenspider> try it in your terminal
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<b3itz> well.... this is for a ruby class. i dont think we are supposed to incorporate anything like that yet lol
<zenspider> b3itz: no, really. try it.
<Noobdog> ... ri is like the man pages for ruby they are important
<b3itz> i am.. i dont get it
<zenspider> before anyone goes nuts and adds celluloid levels of complexity ... has ANY measurement been done?
<zenspider> b3itz: what don't you get?
<havenwood> b3itz: apt-get install ri
<b3itz> it works., its just that nothing ive tried can be found
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<zenspider> how'd you install ruby?
<b3itz> apt-get install ruby
<havenwood> b3itz: apt-get install ri
<b3itz> it runs
<Noobdog> the ruby package comes with ri
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<zenspider> but neutered w/ no data?? fuck I hate linux dogma
<zenspider> is there an ri-data or somesuch?
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<havenwood> Noobdog: checking on this docker container, the ruby package provides the `ri` executable but not the ri package
<havenwood> Noobdog: so you have to 6
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<havenwood> ^*, left shift key going :(
<Noobdog> oh ok, I just assumed it would
<godd2> >> "C 34 57".scan(/\d+/).map(&:to_i)
<eval-in__> godd2 => [34, 57] (https://eval.in/220159)
<b3itz> woah godd2
<godd2> b3itz ignoring the map part, if you pass a regular expression to scan, it will return an array with the matching patterns
<b3itz> if that works...
<godd2> >> "C 34 57".scan(/\d+/)
<eval-in__> godd2 => ["34", "57"] (https://eval.in/220160)
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<godd2> note that even though I looked for numbers in the string, the output was the strings containing those numbers
<b3itz> my first if
<b3itz> outputs nothing
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<godd2> well that script in and of itself is not valid Ruby
<b3itz> >.<
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<godd2> because you started with 'else' on line 1
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<zenspider> b3itz: ah. so install the ri package for the data. then you can actually use it
<b3itz> i have an unless
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<havenwood> b3itz: please paste code examples to https://gist.github.com/ like the chan topic says so we can comment on them, etc
<havenwood> b3itz: name the file ending in .rb
<zenspider> eh. gist vs pastbin doesn't matter if he's pasting invalid ruby
<havenwood> b3itz: indent with two-spaces
<havenwood> b3itz: you can set your editor to two-space soft tabs for ease
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<godd2> b3itz get rid of '.with_index' and remove ', idx'
<havenwood> ^ that!
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<havenwood> and really you can process your lines just once, just map to what you want them as
<b3itz> thanks
<havenwood> b3itz: if you want to know if it starts with, use #start_with? not #include?, but i think have it already parsed so you're not doing that at all
<havenwood> b3itz: downcased or upcased things compare nicely
<havenwood> b3itz: sometimes you want an Array not a Hash
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<godd2> havenwood haven't you learned anything from Rich Hickey?? Arrays just complect things!!
<havenwood> b3itz: it worries me you thought you wanted a Hash. i think look more into Rubies basic datastructures and when you'd want to use one.
<b3itz> I'm using this nums = line.scan(/\d+/).map(&:to_i) and it works, but how exactly does it go about storing in nums with a string liek s 20 40
<havenwood> godd2: :P
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<b3itz> it looks like it writes nums as 20 the overwrites it as 40
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<havenwood> b3itz: because a Hash makes zero sense here
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<havenwood> b3itz: why in the world are you using a Hash?
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<b3itz> havenwood: i though i needed a hash because of how i read the assignent.. i was wrong
<b3itz> we will use it to keep track of the shapes we've processed
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<b3itz> "10 20".line.scan(/\d+/).map(&:to_i)
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<b3itz> poop
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<godd2> put >> in front
<havenwood> >> shape, *args = 's 20 40'.split; [shape, args.map(&:to_i)]
<eval-in__> havenwood => ["s", [20, 40]] (https://eval.in/220161)
<b3itz> how do i do the evaluaing right here?
<b3itz> niceeeee
<rushed> does ruby have an end of time value or another convention for comparing potentially nil dates?
<b3itz> >> "10 20".line.scan(/\d+/).map(&:to_i)
<eval-in__> b3itz => undefined method `line' for "10 20":String (NoMethodError) ... (https://eval.in/220162)
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<eam> rushed: you can use nil
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<rushed> eam: Date.today < nil => ArgumentError: comparison of Date with nil failed
<b3itz> >> "C 34 57".scan(/\d+/).map(&:to_i)
<eval-in__> b3itz => [34, 57] (https://eval.in/220163)
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<b3itz> >> "S 10 20".line.scan(/\d+/).map(&:to_i)
<eval-in__> b3itz => undefined method `line' for "S 10 20":String (NoMethodError) ... (https://eval.in/220164)
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<b3itz> >> "S 10 20".scan(/\d+/).map(&:to_i)
<eval-in__> b3itz => [10, 20] (https://eval.in/220165)
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<b3itz> GRRR
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<b3itz> ok, so is that now an array?
<godd2> yes
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<b3itz> and i can split it by the space and store each as an int?
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<godd2> that's not how I would say it, but close enough
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<b3itz> awesome!
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<eam> rushed: well yeah, there's no such thing as < or > against a non-time
<havenwood> >> "s 20 40\ns 20 40\nc 30".each_line.map { |line| shape, *args = line.split; [shape, *args.map(&:to_i)] }
<eval-in__> havenwood => [["s", 20, 40], ["s", 20, 40], ["c", 30]] (https://eval.in/220166)
<havenwood> b3itz: spend more time learning the basic data structures and the homework will become easier!
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<rushed> eam: right, so I guess I'm looking for a beginning of time / end of time, or Date.min / Date.max or something (or whatever is conventionally used in place of those)
<eam> well that's hard because those values change depending on platform internals
<godd2> b3itz one way to study the classes in ruby is to make flash cards for all of the most common methods
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<eam> rushed: time doesn't have a start/end
<eam> if you really want to you can reason about the maximum time offsets your system stores, but you probably really don't auctually want that
<havenwood> first, instanciate a multiverse
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<godd2> If you wish to make an apple pie from scratch
<eam> (in part, because different system time interfaces provide different maximum offsets)
<b3itz> havenwood: working on it!
<havenwood> b3itz: :)
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<b3itz> there are so many! and it's an 8 week course :(
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<b3itz> ok, now how can i take ["50 30"] and store side1 = 50 and side2 = 30
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<zenspider> >> "s 20 40\ns 20 40\nc 30".lines.map { |s| s.scan(/\w+/) }
<eval-in__> zenspider => [["s", "20", "40"], ["s", "20", "40"], ["c", "30"]] (https://eval.in/220167)
<zenspider> >> "s 20 40\ns 20 40\nc 30".lines.map { |s| s.scan(/\w+/).map { |w| Integer(w) rescue w } }
<eval-in__> zenspider => [["s", 20, 40], ["s", 20, 40], ["c", 30]] (https://eval.in/220168)
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<damic> how do i change the default "render 'form'"?
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<zenspider> #rubyonrails ?
<havenwood> damic: A Rails question? #rubyonrails
<damic> thanks, #rails was locked
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<havenwood> damic: /who damic
<havenwood> damic: /msg NickServ HELP REGISTER
<havenwood> *rather
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<havenwood> damic: and nevermind, you're registered
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<havenwood> wish they'd drop the nick reg req
<b3itz> whats null in ruby??
<havenwood> b3itz: nothing
<havenwood> b3itz: nil
<b3itz> if side2 == nil ?
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<havenwood> >> nil.nil?
<eval-in__> havenwood => true (https://eval.in/220169)
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<havenwood> b3itz: You can ask any Object if it's nil with Object#nil?.
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<b3itz> and if its null, it will return true?
<zenspider> b3itz: if !side2
<havenwood> b3itz: there's no null
<b3itz> that feels so backwards
<zenspider> nil checks are a design smell
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<havenwood> b3itz: and yeah, if `false` isn't a possibility then use truthyness
<zenspider> either don't use nil as a possibility, or treat it for its truthiness
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<zenspider> and if you're using trinary logic (truthy, false, nil) then you deserve a beating
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<baweaver> sane defaults as well
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<baweaver> such as if you're searching a list, return [] instead of nil on no results
<baweaver> or 0 if you want a count
<volty> >> a = [1,2,3,4]; b = []; a.each { |n| b << n; a << 7 if n == 3 }; a == b
<eval-in__> volty => true (https://eval.in/220170)
<baweaver> very rarely should you actually use nil
<volty> safe?
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<sevenseacat> mutating an array as you iterate over it doesnt seem wise
<baweaver> what's the point of that?
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<volty> for me it's wise if it is safe
<sevenseacat> define 'safe'
<baweaver> false dichotomy, but humor us
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<volty> i can do it with enum, but if the semantics is the same, then it is all the same
<baweaver> what's the reasoning behind that code?
<b3itz> how do i print two ints within a string
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<b3itz> like Side1 "side1" side2 "side2
<volty> baweaver: asking me?
<b3itz> i should know this
<baweaver> yeah
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<b3itz> im just too lazy to look
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<volty> accumulating visited nodes (as I go)
<volty> ops, to visit
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<baweaver> google it, regex b3itz
<b3itz> found it
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<baweaver> I'd still avoid the mutation, but as to how to avoid it, the example is still too vague honestly.
<volty> i wanted to do it with e = lst.to_enum & e.next, then saw it's all the same with e.each, then (all the same) with lst.each
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<baweaver> in the long run, the more you avoid it the less headaches you'll have.
<volty> let's say you are visiting a graph and along the way you push nodes to visit (yet)
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<baweaver> and if you hit a certain node it adds a flag?
<volty> baweaver: but that way I have to do it by means of adding to another array and iterating (all the same) over it
<volty> baweaver: yes, but that's later. I was asking about the semantics of each.
<baweaver> Enumerable#reduce
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<havenwood> >> erfordern 'Deutsch'
<eval-in__> havenwood => undefined method `erfordern' for main:Object (NoMethodError) ... (https://eval.in/220171)
<volty> not yet known - for reduce
<baweaver> look into map and reduce later
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<baweaver> map will take a collection and apply a function to each element
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<baweaver> >> (1..5).map { |x| x * 2 }
<eval-in__> baweaver => [2, 4, 6, 8, 10] (https://eval.in/220172)
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<volty> eh? what has map to do with ever changing array ?
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<baweaver> reduce will take a collection and use the function to fold it
<baweaver> (1..5).reduce(0) { |accumulator, x| accumulator + x }
<volty> I am a strong injecter, thx :)
<baweaver> >> (1..5).reduce(0) { |accumulator, x| accumulator + x }
<eval-in__> baweaver => 15 (https://eval.in/220173)
<baweaver> as to why you need to change the array as you go is odd.
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<volty> baweaver: are you trolling at me ? :)
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<baweaver> No, trying to understand what the point is
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<volty> I told you: think about a graph
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<baweaver> I am and I still don't entirely see the point of doing it in that way or even really what you're trying to accomplish.
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<volty> so, from a node, I push only certain connected nodes
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<volty> at this stage I am doing it (because I prefer, at least at this stage) with push
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<volty> anyway inject would have equivalent logic/ behavior
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<volty> (though only complicating the simple)
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<volty> But I can give you a wondering free tourist tour example, if you prefer :)
<zenspider> mutating your array as you enumerate it is just asking for trouble
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<volty> ok, that's what I wanted to know, thx zenspider. What about to_enum?
<zenspider> what about it?
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<volty> >> a = [1,2,3,4]; e = a.to_enum; b = []; e.each { |n| b << n; a << 7 if n == 3 }; a == b
<eval-in__> volty => true (https://eval.in/220174)
<sevenseacat> thx zenspider for saying exactky what i said :P
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<volty> (e.each must use next internally)
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<zenspider> sometimes it needs to be pounded in
<zenspider> volty: that's just externalizing your enumerator... you're still mutating what you're walking over
<zenspider> gotta go. pre-nerd-party dinner
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<volty> mah, if I follow your advice I will have to put them in another array and walk over it, all the same
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<volty> I'll finish with an enumerator of my own, but I suspect it will be equivalent to the built one
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<b3itz> file.write("%-10s %-25s %-15s %-16s\n" % [average, sd, median, data])
<b3itz> what does the % part do
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<b3itz> %-10s
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<b3itz> nvm
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<b3itz> help!
<b3itz> so,..
<b3itz> i have this: def create_writefile(file, square_area) File.open(ARGV[1], 'a') do |file| file.write(square_area) end end
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<b3itz> but when i call puts create_writefile(ARGV[1], square_area)
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<b3itz> i get a 5 for 2 error
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<sevenseacat> gist the full error
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<parabolize> Replace the ARGV[1] with file? Your not doing anything with that first argument to create_write.
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<parabolize> s/Your/You're
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<elemenopy> hey guys good evening , just wondering how you would think is best to get a count of items matching two parameters from 'sequel' in one line? like the sql query like 'select count(*) from xyztable where column1='a' and column2='b'
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<elemenopy> nvm its like XYZ.count
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<Cat_1> Something like that
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<elemenopy> connix is spamming me porn sites
<elemenopy> not sure who to tell
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<Cat_1> Some spam bots got banned for that earlier.
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<mozzarella> is it good porn or shitty porn?
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<Cat_1> I ain't clicking on it
<Cat_1> Probably bad porn filled with malware
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<mozzarella> guys, is it possible to take every Xth item in an array?
<mozzarella> is there an enumerable method that does that?
<Cat_1> Yes
<Cat_1> use either select or reject with a mod block
<mozzarella> I'm all ears bro
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<Cat_1> array.select { |a| a % 5 == 0 }
<Cat_1> every item divisible by 5
<mozzarella> it's not an array of numbers
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<mozzarella> but I guess I could use each_slice and use the last item in every slice
<Cat_1> oh
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<Cat_1> Misread
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<mozzarella> >> ('a'..'z').each_slice(5).map(&:last).to_a
<eval-in__> mozzarella => ["e", "j", "o", "t", "y", "z"] (https://eval.in/220187)
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<mozzarella> I guess that could work
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<Cat_1> a.map.with_index{ |x,i| i % 5 == 0 }
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<elemenopy> if i have a console based .rb file that i run manually currently. what would you suggest i do to make it run indefinitely (its already in infinite loop in code) upon startup?
<Cat_1> what environment?
<elemenopy> CentOS
<elemenopy> just rc.local?
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<elemenopy> nvm found some docs ty
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<godd2> I wouldn't mind there being Enumerable#take_nth(n)
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<Cat_1> Do you have something like Upstart in centOS?
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<elemenopy> im not sure but i think i will make it a service or daemonize it
<elemenopy> so i can do like 'service dataminer start'
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<parabolize> I'm pretty sure rc.local is what most people using that distro would use https://www.centos.org/docs/5/html/Installation_Guide-en-US/s1-boot-init-shutdown-run-boot.html
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<elemenopy> yea i think it will be something like that. im running into a problem now with too many database connections. trying to find a way to make less 'connect' calls
<elemenopy> it's more logistics and code review though for that type of problem
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<greenride> On Yosemite, does anyone have problems with the command `gem install libv8 -v '3.16.14.3'`? I get an error message stating Unable to find a compiler officially supported by v8.
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<zenspider> greenride: do you have a complier setup post-upgrade?
<Cat_1> xcode-select --install ?
<zenspider> cc --version
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<zenspider> compiler even. damn.
<Cat_1> I had to upgrade a whole bunch of things to get Yosemite to work
<zenspider> I just had to install the command-line tools. worked great
<greenride> Apple LLVM version 6.0 (clang-600.0.54) (based on LLVM 3.5svn)
<zenspider> that's good. same as me.
<greenride> That was the output of cc -version
<zenspider> let's see what v8 wants
<greenride> v8 wants
<greenride> It is recommended to use GCC v4.4 or higher
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<zenspider> greenride: homebrew doesn't specify a particular compiler, so it should just work
<zenspider> no patches either
<zenspider> does seem to require something called gyp tho, so maybe it is a dependency thing?
<zenspider> I dunno. you might want to just try `brew install v8` to test that out
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<zenspider> they are doing version 3.25.30 specificially tho
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<greenride> zenspider: I installed v8 with brew, and that doesn't help.
<greenride> zenspider: Does gem install libv8 -v '3.16.14.3' work for you?
<Cat_1> I need an idea for a project...
<zenspider> greenride: "that doesn't help" doesn't help
<sevenseacat> lol
<zenspider> if you successfully installed it via brew it DOES help. it tells you that you _can_
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<greenride> zenspider: 'brew install v8' succeeds.
<greenride> zenspider: gem install libv8 -v '3.16.14.3' still fails on Yosemite.
<zenspider> so then the problem is with the gem, not the project
<zenspider> 3.16.14.7 installs fine
<greenride> Does 3.16.14.3 fail for you?
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<zenspider> yes. so go use the patched up version that works.
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<greenride> yes == failure ?
<zenspider> did you ask a yes or no question? did I not respond appropriately?
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<greenride> I asked the question poorly. And, you answered appropriately.
<greenride> zenspider: Thanks.
<sevenseacat> zenspider: you need to answer in the form of interpretive dance.
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<zenspider> just use the newer version. it'll be fine.
<greenride> zenspider: Thanks.
<zenspider> sevenseacat: I graduated from the evergreen state college. don't joke about that.
<sevenseacat> lol
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<talnti> washingtonian here too ;)
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<greenride> `gem install libv8 -v '3.16.14.7'` gives a different error. ERROR: While executing gem … (NoMethodError) undefined method 'size' for nil:NIlClass
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<zenspider> % gem i -i xxx libv8
<zenspider> Fetching: libv8-3.16.14.7-x86_64-darwin-14.gem (100%)
<zenspider> Successfully installed libv8-3.16.14.7-x86_64-darwin-14
<zenspider> *shrug*
* cleopatra dance
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<cleopatra> morning I returned to work :(
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<mozzarella> GUYS
<mozzarella> I'm try to return a value from a thread but it doesn't work
<mozzarella> I always get nil
<sevenseacat> thats a shame.
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<zenspider> >> require 'date'; Date.new(2014, 10, 26) + 2
<eval-in__> zenspider => #<Date: 2014-10-28 ((2456959j,0s,0n),+0s,2299161j)> (https://eval.in/220209)
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<JR_> hi is this channel also for rails?
<pipework> JR_: #rubyonrails
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<JR_> doesn't seem to have a channel on that
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<pipework> JR_: You'd be wrong.
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<JR_> how can I join the channel
<JR_> it seems that I need to be identified first
<pipework> Then you should probably identify using nickserv or register an account first then identify.
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<JR_> where can i register an account
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<JR___> its done thanks
<JR___> (:
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<shevy> mozzarella are you using mutex? http://ruby-doc.org/core-2.1.4/Mutex.html
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<shevy> dance, people, let's dance!
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<shevy> hey sevenseacat there is more cats here ... I approve of the Cat_1 nick
<shevy> and connix is a bot :\ :/
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<arup_r> Is Rake official doco link dead? http://docs.rubyrake.org/
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<Pip> How is ruby today?
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<shevy> Pip as always - small and beautiful
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<sevenseacat> arup_r: im not sure where you got that link from, but its wrong.
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<arup_r> sevenseacat : Useful Resources in this link http://www.stuartellis.eu/articles/rake/
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<sevenseacat> why would you pick links from some random blog article?
<sevenseacat> instead of going to the official docs
<arup_r> No... They mentioned... so I clicked
<arup_r> I was following that blog to build my stuff
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<arup_r> rshetty: How are you ?
<arup_r> :-)
<sevenseacat> arup_r: well now you know, that URL isnt the official doco link.
<arup_r> Humm.. I see
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<last_staff> good morning everyone
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<gr33n7007h> led PARTAAAYYYYY! t = File.open('/dev/console'); loop { t.ioctl(0x4B32, rand(0..6)) }
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<adac> Why gets open-uri: "blob = open(ic.source_url).read" another encoding (utf8) then mechanize "blob = @agent.get(ic.source_url).content"? And how to set utf8 coding also on mechanize?
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<gr33n7007h> (pry):5: [BUG] Segmentation fault at 0x00000000000101 2.1.4 very buggy
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<Hanmac> gr33n7007h: depends ... what have you done in your code?
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<gr33n7007h> Hanmac, require 'socket'; iwreq = ["wlan1", " " * 32, 32, 0].pack("a16pII"); s = Socket.new(:INET, :DGRAM, 0); s.ioctl(0x8B1B, iwreq); int, essid, len, flags = iwreq.unpack("a16pII")
<gr33n7007h> works in 1.9.3 fails in >= 2.0
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<rpag> >> require 'socket'; iwreq = ["wlan1", " " * 32, 32, 0].pack("a16pII"); s = Socket.new(:INET, :DGRAM, 0); s.ioctl(0x8B1B, iwreq); int, essid, len, flags = iwreq.unpack("a16pII")
<eval-in__> rpag => (https://eval.in/220271)
<rpag> ah not allowed :)
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<arup_r_> Any body using Amazon's DynamoDB locally ? I am looking for a way to store the credentials there... But not getting the way to do that
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<Jet4Fire> Hello guys!
<soahccc> I have a ruby application here (opengl) and it's kindof not very performant. Without dissecting the code and putting benchmarks all over the place: Is there a quick way to see which part of the application is creating the load?
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<workmad3> soahccc: ruby-prof maybe
<zenspider> ruby-prof and the like will help
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<soahccc> Thanks, I think I worked with ruby-prof once. I have this thought in my head that all these tools were 1.8 only but this apparently is not the case :)
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<klap> Does Enumerable#inject fold left, or right?
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<gaussblurinc11> what's could go wrong? bundler search gems in @global gemset (where it was installed), but I use 'rvm gemset use MyGemset && bundle exec ruby task.rb'
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<arup_r> Any idea why am I getting error ? https://gist.github.com/aruprakshit/e8c9798f07d4134f9a5c
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<Noobdog> arup_r: works fine on my end, must be something wrong with the gem
<arup_r> bundle install worked.. Because they added that class newly to the Gem.. See the Rdoc date http://docs.aws.amazon.com/AWSRubySDK/latest/AWS/Core/CredentialProviders.html :-)
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<arup_r> Noobdog: I just mentioned the reason
<arup_r> Me is too fine
<Noobdog> oh ok
<arup_r> I installed the gem before Nov 6...
<arup_r> Noobdog: Thanks for your comment
<Noobdog> nps good luck
<arup_r> If I use AWS.config(use_ssl: false, dynamo_db: { api_verison: '2012-08-10', endpoint: 'localhost', port: '8000' }, credential_provider: provider) .. then getting error as
<arup_r> AWS::DynamoDB::Errors::InvalidAction: DynamoDB Local does not support v1 API.
<arup_r> Which one then it supports ?
<arup_r> Noobdog: ^^
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<workmad3> arup_r: if you installed the gem before they added that class then your Gemfile will be locked to an older version
<workmad3> arup_r: you'll need to do a 'bundle update aws-sdk' to get the latest version installed and locked in your Gemfile
<arup_r> I did bundle install.. and previous issue gone
<arup_r> Ok
<arup_r> But install resolved the issue
<Noobdog> arup_r have you tried the other api_version
<arup_r> Which one it is?
<Noobdog> i think its '2011-12-05' from memory
<arup_r> I have 25 tabs opened for this set up.. I am lost now.. :-(
<Noobdog> 2012 is the lastest one
<arup_r> ok
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<arup_r> Let me try it... Noobdog
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<arup_r_> workmad3: Thanks for your suggestion.. I didn't know that
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<arup_r_> AWS.config(use_ssl: false, dynamo_db: { api_verison: '2011-12-05', endpoint: 'localhost', port: '8000' }, credential_provider: provider) giving same error
<arup_r_> Noobdog
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<arup_r_> Does any body know which API version DynamoDB local support ?
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<arup_r_> I tried all versions here - https://github.com/aws/aws-sdk-ruby/issues/549 .. None of them is working
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<vsipuli> Out of curiosity, how does one define methods that take their arguments enclosed in brackets, like Dir["*"]?
<vsipuli> Using "def foo *args; p args; end" works, but it does not seem to be equivalent to Dir["*"], because foo(["*"]) works, but Dir(["*"]) gives an error.
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<shevy> vsipuli ruby cheats there
<shevy> >> class Foo; def self.[](i); puts 'you passed '+i.to_s; end; end; Foo[6]
<eval-in__> shevy => you passed 6 ... (https://eval.in/220346)
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<shevy> vsipuli the name of the method should be [] or :[] respectively
<shevy> I think Dir[] is equivalent to Dir.[]
<shevy> hmm not quite
<vsipuli> shevy: So the Ruby parser has some special case handling for that construct, invoking the method named "[]" in that case?
<shevy> can't answer that right now, I have to understand why Dir.[] is not wanted first
<shevy> probably I forgot something
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<klap> Why does JRuby have a differemt LOAD_PATH? It also contains .
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<rpag> klap, 1.9 stopped including '.' on the $LOAD_PATH
<rpag> maybe you're running in 1.8 mode?
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<workmad3> vsipuli: Dir["whatever"] is syntax sugar for Dir.[]("whatever")
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<workmad3> vsipuli: that is, call the method '[]' with the argument "whatever"
<vsipuli> workmad3: Thanks. Are there any other similar cases of syntax sugar?
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<vsipuli> (Or are they listed in some documentation?)
<workmad3> vsipuli: there probably is a list somewhere, but the other main cases are all similar in that they're operator overloads
<workmad3> vsipuli: e.g. 'class Foo; def bar=(new_value); end; end' gives you the ability to do 'Foo.new.bar = "new" '
<workmad3> vsipuli: and defining a method +, -, *, /, etc. let you overload operators for your own objects
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<workmad3> vsipuli: so yes, that does mean that '1 + 2' can be thought of as syntax sugar for '1.+(2)' in ruby ;)
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<workmad3> mmm, lunchtime
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<vsipuli> Is there any consensus on this kind of operator overloading being a desirable feature or not? It makes the syntax more terse (you don't need to write full method invocations each time), but on the other hand I sometimes find these operator overloads surprising, not realizing the language default has been overridden.
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<tobiasvl> in ruby it's used quite a lot
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<shevy> is it better to do this:
<shevy> string.delete!('#')
<shevy> or this
<shevy> string.delete!('#') if string.include? '#'
<jhass> the former
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<shevy> hmm
<shevy> I guess it will only modify in the first case if that character token can be found right?
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<tobiasvl> yes
<tobiasvl> of course
<tobiasvl> it won't delete anything else, that would be weird ;)
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<shevy> yeah
<shevy> I wondered if the second variant would be faster
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<arup_r_> Tried Python style http://boto.readthedocs.org/en/latest/dynamodb_tut.html#describing-tables.. Didn't work in Ruby
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<gaussblurinc1> guys, I have gem minitest with version 4.7.5, but my app required minitest 5.1.2 or later, how to fix this problem IF minitest installed in global gemset and i want to update this gemset to later version of minitest?
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<rpag> gaussblurinc1, use bundler, keep a Gemfile, and use gem 'minitest', '~> 5.1' in the Gemfile
<rpag> run bundle
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<godd2> shevy it depends. it depends on how long the string is and how likely it is to contain the substr you care about.
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<godd2> if it's likely to contain the #, then you might as well not check, since checking would only, on average, add computation
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<godd2> but the amount of computation difference is pretty tiny
<godd2> so unless you're doing this for big data (and then I would ask why youre using ruby), id say yeah, just go without the include
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<Hanmac> gaussblurinc1: even without bundler or rvm or something like that you can install multiple version of one gem
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<shevy> godd2 I am using ruby because it rocks!!!
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<godd2> haha I think you know I agree with you
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<shevy> I don't really have big data godd2
<shevy> I am not the next twitter
<shevy> once I wanted a huge collection of video stuff
<shevy> then I realized... why do I keep trash videos
<shevy> so I started to discard like 80%
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<shevy> after 10 years I am like at less than 200 videos
<shevy> the jungle book is one that will remain though!
<shevy> the monkey song is one of the coolest songs ever
<shevy> this is how they did it: https://www.youtube.com/watch?v=rV8HrpOu1FA
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<gaussblurinc1> Hanmac: yes, I know. now I trying to find which gem use specific version of minitest
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<shevy> sevenseacat I found your theme song https://www.youtube.com/watch?v=O7fF_loQEcw
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<neredsenvy> https://gist.github.com/anonymous/e623ba7cb5084024e79d Why is my error attribute never set. The GET request raises 404 Exception the rescue should set the error attribute when i try to access the error message I get nothing using user.error
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<neredsenvy> Even with just rescue instead of rescue => e
<shevy> neredsenvy what is an attribute
<neredsenvy> string
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<cpruitt> Maybe a dumb question: I’m very familiar with the *result* of class << self. I do not, however fully understand what the << is, is called, or what it is specifically doing. Anyone feel like giving a quick explaination?
<shevy> this code is not any good neredsenvy
<shevy> @error is an instance variable
<shevy> typically they get initialized inside def initialize
<shevy> or in another method
<shevy> in your example, you put it right onto the class level
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<neredsenvy> register method is called after object is initialized and it sets the variable on the instance of that object should be able to retrieve it no ?
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<shevy> I do not see where register method is called
<shevy> can you show me the line where it is called?
<neredsenvy> shevy: I create a user object user = User.new fill out the fields call validation method to see if it's valid than I call user.register this is all in my controller
<neredsenvy> separate calss
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<shevy> what are "fields call validation method"
<shevy> by the way, register() seems to always return false
<neredsenvy> but because the api is wrong when calling register method it should raise 404Exception when that happens I need to set the error message and return false
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<shevy> this sounds very railsy
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<neredsenvy> shevy: I know for now. When I call the register method it has to return false so I know to get the error message
<gaussblurinc1> ok, how to run script with bundle exec with :production gems group?
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<gaussblurinc1> story: some of the gems needed minitest 5.4.2 and they all located in :development/:test group. I don't want to install them on production machine, but I need `bundle exec ruby` command to start some tasks
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<crack_user> hello guys
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<crack_user> recently I saw a gem to disable and enable system parts
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<crack_user> but a could remember the name
<crack_user> anyone knows?
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<pontiki> a little too vague, crack_user
<pontiki> what sort of system?
<crack_user> so the fucionally of gem is you can scope parts of your application an them enable and disable them
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<crack_user> I saw this recently in HN or reddit
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<wsmoak> can someone help with ruby-ized json document syntax? inserting into a mongodb collection, it’s complaining about something I think is valid… https://gist.github.com/wsmoak/31b79efedbbdfe2cdd61
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<ericwood> I'm surprised you're not using the JSON-style hash syntax
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<ericwood> and just a stylistic concern: it's not fun to use strings AND symbols as hash keys at the same time, best to pick one or the other!
<ericwood> but that doesn't help you with your problem :o
<ericwood> I'm not seeing anything out of place with my initial read-through
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<wsmoak> noted. I think I’m moving towards symbols as keys :)
<ericwood> if you're generating JSON might as well use the JSON-style syntax :)
<ruisantos> wsmoak: nothing's wrong with that structure, I just copied that into irb and created a hash.
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<ruisantos> and yes, what ericwood said. Use id: "43", doe: "3BL", and so on instead of the 'hash rocket' form.
<ericwood> think of all of the characters you'll save :D
<wsmoak> ericwood: what change exactly, I looked again and all the keys (left side of =>) are symbols ?
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<wsmoak> oh, don’t use the rocket. pretty sure I tried that and something complained.
<ericwood> "first_exposure", etc. are strings
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<gaussblurinc1> oh, how to 'unreqire' gems in group :development in gemfile?
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<wsmoak> ericwood: in the full load.rb, got it. was only looking at the gist.
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<workmad3> gaussblurinc1: you don't... you just don't install them in environments you don't need them in
<workmad3> gaussblurinc1: e.g. with 'bundle install --without development test'
<gaussblurinc1> workmad3: yes, I do it. but when I run bundle exec ruby script.rb, it falls on 'require'
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<wsmoak> oh for … now it works. sorry for the noise. apparently I had unsaved changes. :/
<workmad3> gaussblurinc1: then don't explicitly require a gem that's only in dev or test...
* wsmoak goes to see if TextMate can do the IDEA thing where it saves when it loses focus
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<ericwood> I hate that :|
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<wsmoak> just upgraded and the ‘edited’ indicator is different :/
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<eindoofus> is there a data structure in ruby for just storing keys? i don't need to store values, just storing the unique key values
<shevy> eindoofus sounds like Array
<shevy> [key1, key2, key3]
<eindoofus> i should probably give an example
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<eindoofus> i'm storing id 123, 124, 124, 125, but i only need to store 124 once since i don't want duplicates
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<shevy> yes
<shevy> >> [:key1, :key2, :key3, :key1].uniq
<eval-in__> shevy => [:key1, :key2, :key3] (https://eval.in/220483)
<shevy> there you go eindoofus
<shevy> btw is this a german nick?
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<eindoofus> shevy, german inspired. lol. nope, just made it up
<workmad3> eindoofus: Set
<shevy> k
<shevy> the word "doof" is german for silly or dumb :)
<workmad3> >> a = Set.new; a << 123 << 123 << 124 << 125 << 123; a
<eval-in__> workmad3 => uninitialized constant Set (NameError) ... (https://eval.in/220484)
<shevy> ein means one
<workmad3> >> require 'set'; a = Set.new; a << 123 << 123 << 124 << 125 << 123; a
<eval-in__> workmad3 => #<Set: {123, 124, 125}> (https://eval.in/220485)
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<eindoofus> yup, i think of it as dumb one. as in i being the dumb one. would have used noob but that's taken
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<shevy> hehe
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<shevy> I think we should give workmad3 the title Professor
<shevy> and havenwood receives the title ChannelGeek
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<workmad3> shevy: I only have a masters, and haven't taught in a uni for a few years now :P
<shevy> aha!
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<shevy> so you actually have been teaching before!
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<eindoofus> lol. btw, thanks for the Set example workmad3
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<shevy> workmad3 is a pack of ruby knowledge
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<workmad3> shevy: you can blame apeiros for Set though... he kept on drumming in using Set rather than Array#uniq and it stuck (eventually) ;)
<shevy> aha
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<shevy> well I wrote down that Sets are faster than Arrays
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<workmad3> wrote down? on the corpses of trees? who does that anymore? :P
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<canton7> they are for setty things
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<canton7> not so for arrayy things
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<gaussblurinc1> hey, what's wrong with bundler? I just run bundle config and it fails, oh. http://pastebin.com/6VD3UUU2
<workmad3> canton7: setty things like a set of IDs ;)
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<workmad3> gaussblurinc1: include your Gemfile pls
<shevy> workmad3 in my local knowledge base
<shevy> if I don't write things down I forget them very quickly
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<shevy> now I have a question!
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<shevy> say I have code that does stuff like:
<shevy> puts 'hello world'
<shevy> is there a simple way to intercept that output and decide what to do on my own with it?
<shevy> e. g. to not puts it right now but instead at a later time, or filter it first
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<canton7> reassign $stdout
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<canton7> or #replace, or whatever that trick was. been years since I've seen it
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<workmad3> or only ever use puts on IO objects that you can pass into a method
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<workmad3> so you can inject a StringIO or some other io-like object
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<canton7> ^ much better, if you can
<workmad3> def foobar(out=$stdout); out.puts "hello world"; end; foobar(StringIO.new("") )
<gaussblurinc1> workmad3: catch http://pastebin.com/RxwRzWRW
<shevy> canton7 hmm let me think for a moment
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<shevy> so both examples use $stdout
<shevy> time to google!!!
<eindoofus> if i have a script that doesn't require objects is it bad practice to put everything in the global scope and not use a class?
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<workmad3> shevy: I just used $stdout as the default value for the 'out' argument
<shevy> eindoofus global scope can conflict with other code
<workmad3> shevy: so you could call 'foobar' and it would use $stdout, but you could also pass in your own IO object
<shevy> eindoofus like if two people define a: class Foo
<shevy> workmad3 hmm
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<shevy> ohhhh
<shevy> print() is actually $stdout.print() ?
<workmad3> yeah
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<workmad3> and puts is $stdout.puts
<shevy> cool
<workmad3> p isn't $stdout.p though (annoyingly) :)
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<gaussblurinc1> workmad3: any ideas about gemfile?
<workmad3> gaussblurinc1: hmm... can't spot anything there
<workmad3> shevy: similarly, gets is $stdin.gets ;)
<shevy> aha
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<shevy> we also have STDIN
<workmad3> STDIN == $stdin
<shevy> hehe
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<shevy> a constant to point at a global :)
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<shevy> or perhaps the other way...
<workmad3> >> $stdin.object_id == STDIN.object_id
<eval-in__> workmad3 => true (https://eval.in/220486)
<workmad3> >> $stdout.object_id == STDOUT.object_id
<eval-in__> workmad3 => true (https://eval.in/220487)
<shevy> my brain is slow - today I must not molest it. I learned that print is actually $stdout ... actually, I have used $stdin.gets before too... weird that I never thought that the other methods also exist on these ... uhmm objects? is $stdout an object?
<shevy> >> $stdout.class
<eval-in__> shevy => IO (https://eval.in/220488)
<shevy> an IO object!
<workmad3> shevy: a constant and a global that both point to the same object ;)
<shevy> >> $stdout.object_id
<eval-in__> shevy => 544679740 (https://eval.in/220489)
<shevy> >> $stdout.object_id
<eval-in__> shevy => 546957110 (https://eval.in/220490)
<shevy> hmmmm
<shevy> always gets a new object id
<workmad3> yeah, it'll change between runs of the interpreter
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<workmad3> >> 3.times.map{$stdout.object_id}
<eval-in__> workmad3 => [545957690, 545957690, 545957690] (https://eval.in/220491)
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<shevy> who was the guy with the IRC mud
<shevy> all I remember is that his nick started with a g
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<ferno> Hi! Is there any data structure in ruby that implements some sort of dynamic array, that allows one to pop off the first element while adding elements at the end, without needing to constantly "move" items up?
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<ferno> I need a queue of sorts, but within a single thread.
<workmad3> ferno: Array
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<shevy> hehehe
<ferno> Really? Isn't deleted the 0th element expensive?
<ferno> deleting*
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<ferno> workmad3: Any idea on performance when constantly deleting element 0 + adding elements?
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<workmad3> ferno: no... but I doubt it's significant compared to the overhead of just using ruby ;)
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<ferno> I think I'll go with a hash with some snazzy key logic, may be faster.
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<ferno> workmad3: Thanks :D
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<workmad3> ferno: benchmark :P
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<DjDeaf> Hi Guys, Any idea on how to use Ruby's OptParser for getting 2 params under the same option?
<DjDeaf> For example: script -t param1 param2
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<DjDeaf> without , or anytthing but spaces
<workmad3> DjDeaf: I think OptParser only supports , separated multi-value params
<DjDeaf> :(
<DjDeaf> I was hoping someone was smarter than me and was able to pass this\
<workmad3> DjDeaf: OptParser is pretty inflexible
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<shevy> how do you web-guys manage css themes?
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<eindoofus> is there a way to have ruby ignore quotes on a line like: "CSV.foreach(filename) do |row|"?
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<workmad3> shevy: I adopt a ford policy - "You can have any theme you want, as long as it's the one I chose"
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<shevy> hmm
<havenwood> DjDeaf: Consider switching to Slop?: https://github.com/leejarvis/slop#readme
<workmad3> eindoofus: sorry... I don't quite understand what you're asking
<shevy> workmad3 understanding all of the CSS on a website in use seems pretty ... daunting
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<workmad3> shevy: yeah, it can be
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<shevy> and then we add some more javascript
<shevy> like... really a LOT of it
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<shevy> and databases!
<shevy> and images!!!
<eindoofus> workmad3, i noticed some records with a single quote in the csv are throwing an exception
<workmad3> shevy: on one site I did, I made a theme selector that allowed the user to select any of the bootswatch themes :)
<shevy> hmm
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<workmad3> eindoofus: sounds like invalid CSV
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<workmad3> shevy: I also modified geo-bootstrap to work on that site :)
<workmad3> shevy: you'd like geo-bootstrap... it's very 90's web ;)
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<eindoofus> workmad3, it opens fine in another csv reader application i have, and that application just shows the individual quote character rather than bombing
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<workmad3> eindoofus: so the line is something like f1,f2,"Text with a " quote in it",f3 ?
<shevy> hehe
<shevy> the 1990s were my days to shine
<workmad3> shevy: as it was intended for internal testers, I also added an 'expert mode' to that site... it added a CSS class to every element that used CSS animations to spin things ;)
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<eindoofus> workmad3, i believe it's something like f1,f2,text with " quote,f3
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<gr33n7007h> havenwood, Slop vs Trollop?
<workmad3> eindoofus: ah, if the field isn't quoted itself, you should be able to sort it by doing 'CSV.foreach(filename, quote_char: "'") do |csv|'
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<workmad3> eindoofus: the issue is that the quote character defaults to ", and it's not valid to have the quote character appear inside a field unless it's quoted
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<eindoofus> workmad3, cool, i'll give that a try. thanks
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<havenwood> gr33n7007h: i like Trollop too, quite similar, but not maintained
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<gr33n7007h> yeah, me too, I'll have to check Slop out :)
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<workmad3> eindoofus: the file is still somewhat bad as a CSV file btw... the CSV RFC (RFC4180) which is the closest CSV has to a standard says that a field that contains a " needs to be quoted and the " escaped (by doubling it up)
<havenwood> shevy: thought you might like this: https://github.com/tombenner/ru#readme
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<workmad3> eindoofus: just annoyingly, a lot of CSV generators and CSV readers don't give a crap about 'correct' CSV... and so the propagation of crappy CSV that needs to be kludged around continues
<eindoofus> workmad3, ugh, that would explain how this is still in production
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<workmad3> eindoofus: did altering the quote character work btw?
<shevy> havenwood hehe
<shevy> why did they name it ru
<workmad3> shevy: as in config.ru ?
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<shevy> ah I hate that even more
<shevy> I just mean the invocation "ru"
<shevy> but it looks cleaner than awk
<shevy> ru 'map(:center, 80)' myfile
<havenwood> shevy: it was previously called "Rushed" and "Ru" saves 4 letters
<workmad3> oh... the ru tool
<shevy> awk 'printf "%" int(40+length($0)/2) "s\n", $0' myfile
<shevy> ah I see
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<workmad3> dunno... evocative of sh maybe?
<shevy> people like to type few characters
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<shevy> I would rename havenwood to havy
<shevy> and workmad3 to worky
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<havy> shevy: fine
<shevy> haha!
<workmad3> and shevy to shiv? :P
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<shevy> hmm no...
<shevy> I think there was a french programmer called shiv
<eindoofus> workmad3, nope, now it's throwing a lot more exceptions. looking into them now
<shevy> either that, or it was the magic card shivan dragon ...
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<shevy> omg
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<shevy> please don't change your nicks
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<workmad3> shevy: I wasn't fully... I was just grouping worky to my freenode account so I could ghost someone who used it ;)
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<workmad3> eindoofus: hmm... sounds like the CSV file is using " for field quoting elsewhere then...
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<DjDeaf> What's the deal with to_i in ruby? Why can't I cast a var to integer?
<eindoofus> workmad3, found an ' apostrophe in one of the lines generating the exception
<workmad3> eindoofus: aha :)
<workmad3> DjDeaf: ruby has no casting at all
<workmad3> DjDeaf: only conversion methods
<workmad3> DjDeaf: welcome to strongly-typed languages ;)
<eindoofus> workmad3, is there a way to have it ignore both quotes and apostrophes?
<workmad3> eindoofus: find a character that is definitely not used in the file and use that as the quote character? :)
<DjDeaf> So if I have a var with "121212", how can I make sure it's an integer? besides using reges?
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<DjDeaf> regex*
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<L8D> I need someone to convince me to use ruby
<eindoofus> workmad3, don't option worries me... lol
<eindoofus> that*
<workmad3> DjDeaf: Integer("121212") will raise an exception if it can't convert the string to an integer
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<workmad3> >> Integer("121212")
<eval-in__> workmad3 => 121212 (https://eval.in/220509)
<workmad3> >> Integer("foobar")
<eval-in__> workmad3 => invalid value for Integer(): "foobar" (ArgumentError) ... (https://eval.in/220510)
<L8D> or at least... I need someone to convince me why they use ruby over all of the alternatives out there
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<havenwood> L8D: use Ruby or else!
<L8D> like... I used to be a big fan
<DjDeaf> Thanks workmad!
<havenwood> L8D: We have foxes and chunky bacon. What do they have?
<L8D> and now I can't remember why
<DjDeaf> Appreciated
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<L8D> and the same for python
<workmad3> L8D: it's a protection racket... if I don't use it, matz will come round to my house and... 'do stuff'...
<L8D> oh hi havenwood
<havenwood> L8D: They have neither foxes nor chunky bacon.
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<L8D> but I mean... on a more serious note
<L8D> and not a trolling or joking one
<L8D> I can understand the appeal to beginner programmers
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<workmad3> L8D: you're in #ruby and asking why you should use ruby... how do you expect something other than a trolling or joking answer? ;)
<L8D> and as a language to teach
<L8D> but when it comes to software professionals wanting to use it
<L8D> I've gotten out of touch and I can't remember
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<dorei> L8D: ruby => best OO experience :)
<L8D> maybe it's the TDD aspect?
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<eindoofus> workmad3, found on stackoverflow that "\x00" works with a UTF-8 set
<workmad3> L8D: good community, lots of gems that do lots of things, good OO model, flexible and powerful
<L8D> but aren't there things going on like monkey patching and no proper namespaces?
<eindoofus> exceptions gone :)
<workmad3> L8D: man, next you'll be criticising because it's dynamically typed :P
<havenwood> L8D: freedom patching is good for you and there are proper namespaces
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<L8D> what about immutability and concurrency then?
<havenwood> L8D: it's an expressive language that you can do things quickly in, which comes in handy in all sorts of situations
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<L8D> havenwood: okay, good point. What about large enterprise-y software?
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<L8D> which huge ball-of-mud codebases?
<workmad3> L8D: they seem happy with java :P
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<L8D> quite a few of them are using rails now
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<dorei> java is the new cobol :)
<workmad3> L8D: probably because big enterprisy managers don't get fired for dictating java ;)
<havenwood> L8D: Ruby doesn't have enough XML for nested folders for Enterprise. https://github.com/tenderlove/enterprise#readme
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<L8D> I'm not talking about the enterprise stereotype
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<havenwood> L8D: Lots of large companies use Ruby these days. Millions of lines of code.
<L8D> yeah
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<L8D> what makes ruby so well suited to that?
<L8D> or at least what makes ruby *seem* so well suited to that?
<havenwood> L8D: it's expressive, you can do things quickly, and it makes programmers happy
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<L8D> okay. good point. thanks.
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<L8D> would anyone here agree that ruby isn't well-suited to things that need to get done quickly but instead correctly?
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<workmad3> L8D: depends on how you're defining 'correctly'
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<L8D> like codebases that end up getting maintained slowly over time rather than developed in sprints
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<workmad3> L8D: is it good for formal proofs? I'd probably agree that it isn't... but then neither is any language in large-scale use, afaik
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<havenwood> L8D: If immutability and concurrency are your priority then it's not the best place to look. You can use stuff like Hamster and Adamantium for some immutability or Celluloid or Agent for concurrency or other options.
<L8D> workmad3: what about erlang and haskell?
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<L8D> "large-scale use" nvm
<havenwood> L8D: Rubyists tend to like Elixir on the Erlang front.
<L8D> not "used in large-scale"
<havenwood> L8D: Created by a Rubyist and all.
<workmad3> L8D: ok, maybe haskell... afaik, erlang is much more about robustness than formal proofs of correctness ;)
<havenwood> L8D: Clojure is nice and on the same platform as JRuby.
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<workmad3> L8D: so it has fault tolerances built in for when things go wrong, rather than attempting to prove that they can't ;)
<havenwood> L8D: Or there's always Rust and Nim. :P
<L8D> could I not say that someone who has worked with Haskell a lot can be just as productive as a ruby programmer when it comes to sprinting out code?
<L8D> "creating blogs in 5 minutes"
<workmad3> L8D: possibly
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<L8D> but then ruby would have the advantage that you could learn it far more quickly than you could Haskell
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<L8D> ok I see
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<workmad3> L8D: tbh, it's not an area where you're going to get a lot of objective, empirical evidence, IMO, because trying to pin down productivity and effectiveness to a language is kinda the wrong way to do it (again, IMO)
<workmad3> L8D: i.e. a good coder is going to be good in pretty much any language, a bad coder will figure out how to screw up in pretty much any language
<L8D> I guess my mindset on software has changed since I last used ruby
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<L8D> I don't mean this to imply anything about ruby or offend someone but
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<L8D> I think I see ruby as bad because I focus on using abstractions that let me write correct and performant code
<workmad3> L8D: I'm waiting for the but ;)
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<workmad3> L8D: ah, there we go :)
<tercenya> L8D: more 'enterpris-ish' choices like java have higher learning curves, harder to pick up mid-project, which often leads to higher overhead in "just getting things done". the fragmentation of Spring MVC, JSF, Grails, Struts is an example. Rubists eschew that, and often have stronger shared culture. As noted above, ruby is also widely regarded as more plesant to program in.
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<L8D> instead of being something that lends to being incredibly easy to use and start using
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<workmad3> L8D: I tend to see 'correct' as a moving target, so I focus on a language that optimises for me being able to change things quickly when the customer changes their mind
<panini> what about golang
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<havenwood> i prefer this decade
<L8D> panini: under what regard?
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<L8D> are you asking if I see it as bad/counter-intuitive or good?
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<panini> fast, low level, fast to develop, easy to package, good at concurrency.
<workmad3> L8D: I'm also rather against talking about 'correctness' in software, because I always associate it with formal methods and software proofs, which I've yet to see work outside of a fairly small subset of problem classes
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<workmad3> L8D: end of the day, you use what you think is good for the task at hand though :)
<havenwood> L8D: We somehow manage to keep creating neat, working things.
<L8D> sorry I'm using the wrong term there
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<L8D> by "correct" I mean code that only focuses on the problem at hand
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<L8D> so "very high level"
<L8D> so when I writing parsers, I don't want to think about managing encodings or file IO or whatever
<workmad3> L8D: you mean cohesive ;)
<workmad3> L8D: and working at a single level of abstraction at a time
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<L8D> or if I'm writing web servers, I don't want to deal with any low-level HTTP practices
<workmad3> L8D: which I see as aspects of design rather than the language itself... and I personally feel that ruby is quite a good language for that, due to its expressiveness :)
<havenwood> L8D: So you've mentioned immutability. Sure. But being easy for beginners isn't a downside. It doesn't then cap what you can do.
<workmad3> L8D: I'll take your point on performance though ;)
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<eindoofus> is there the equivalent of something like python's if __name__ == "__main__":
<eindoofus> in ruby?
<panini> golang support utf8 by default, that means you don't have to worry about encoding.
<havenwood> panini: ruby supports utf8 by default
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<havenwood> modern ruby
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<L8D> I think most "modern" languages attempt to support utf-8 by default
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<panini> and it also okay at parsing, there was a video of rob pike where he talked about how to create parser with go.
<havenwood> sad that so much of a language's success seems to be determined by the companies that back them
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<L8D> oh btw if you can't tell I'm a Haskell user
<havenwood> Smalltalk had no IBM, Apple or Microsoft.
<workmad3> L8D: I was figuring as much ;)
<havenwood> L8D: It was transparent. :P
<havenwood> L8D: There's a few of you here.
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<havenwood> There're*
<L8D> but I personally prefer imperative Haskell to declarative ruby
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<eindoofus> *shivers*
<panini> teach me Haskell then !!!
<workmad3> L8D: there's plenty of room in the world for Haskell and Ruby to live side by side :)
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<workmad3> L8D: one of the key aspects of ruby's philosophy to me is the perl viewpoint of 'There isn't one correct way'
<workmad3> L8D: which I think applies as much to languages and tools as it does to constructs within the code itself ;)
<L8D> yeah I'm just here to remember why I used ruby before and to see if I'm just bikeshedding
<rpag> havenwood, true, but nowadays most implementations of smalltalk are private/pay-to-use
<shevy> L8D to be honest, the scripting languages are quite similar to one another - perl, php, python, ruby, lua
<L8D> agreed
<rpag> havenwood, "most" might be pushing it :)
<shevy> haskell is like a totally different beast
<havenwood> rpag: I'd like to watch a skilled Smalltalker work with modern tooling.
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<L8D> shevy: I'm just most familiar with Ruby (or I guess JavaScript) than the others
<havenwood> rpag: wonder if there's a screencast i could find along those lines
<shevy> oh I forgot javascript
<rpag> havenwood, none that i know off hand
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<benzrf> utf-8 considered unharmful
<L8D> shevy: I feel like who works with Ruby professionally should be using Haskell instead ;-)
<workmad3> shevy: I disagree btw ;) I see many more differences between e.g. ruby and PHP than I do similarities
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<rpag> havenwood, last time i checked out smalltalk i didnt find anything that won me over though, maybe gemstone is a good smalltalk VM?
<shevy> the thinking just is not the same in haskell
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<shevy> I need to be able to write code while sleeping
<havenwood> rpag: Didn't you hear? Ruby is the Smalltalk that won!
<rpag> heh
<L8D> shevy: yes, it's a different mindset, but I think you could easily solve the same problems with haskell
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<shevy> I tried
<rpag> as close as it comes :P
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<workmad3> L8D: personally, I've tried a few times to get into a functional mindset, and it's never felt as natural to me as an OO one
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<workmad3> L8D: I accept that other people feel differently
<havenwood> L8D: How is Haskell's library packaging these days? Pretty good now?
<shevy> L8D OOP flows like biological cells in a multicellular organism
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<L8D> workmad3: do you think it's something that you could get used to if you had the time and patience?
* rpag is holding out for a functional language that compiles to JS
<L8D> rpag: haste
<havenwood> rpag: Clojure
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<shevy> oh god
<shevy> another thing that targets javascript
<rpag> straight away, there's two! :)
<shevy> benzrf|offline don't go offline WE ARE TALKING ABOUT HASKELL
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<L8D> havenwood: yeah the only hurdle is that most assets need to be compiled and linked
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<workmad3> L8D: maybe... but I'm more likely to see it as something that would fit certain problems... they're just not ones I tend to encounter ;)
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<rpag> havenwood, i tried closjurescript a long time ago and it wasn't quite there. have you used it at all lately?
<L8D> havenwood: so cabal has to manage a bunch of stuff for systems which ios unfortunate
<rpag> clojurescript*
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<havenwood> rpag: no, not really
<workmad3> L8D: similarly, I don't see OO as the best way to solve all problems... some are just inherently imperative, some are inherently OO, some are inherently functional
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<rpag> havenwood, there was some funkiness about using jquery with it, but i cant remember why
<rpag> anyway, worth checking out again
<L8D> workmad3: I think you don't realise that you can use Haskell to do imperative programming
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<workmad3> L8D: I realise it... but I also would doubt that it's the best tool for the job at that point :P
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<L8D> the learning curve is still the same though :(
<apeiros> aaaaah, the beauty of a 5k screen :D
<workmad3> L8D: you can do functional programming in ruby... but I wouldn't say it's great at it :P
<rpag> apeiros, show off
<shevy> very expensive
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<havenwood> apeiros: mmm
<eindoofus> L8D, I beg to differ. The learning curve is not the same.
<apeiros> and knowing my irc password again…
<rpag> workmad3, its weird in ruby imo
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<L8D> eindoofus: between functional haskell and imperative haskell?
<workmad3> rpag: agreed ;)
<havenwood> 5k screens, a new DJI drone coming out today... I need some cash!
<eindoofus> L8D, oh, nm. thought you meant functional vs oop
<L8D> ah
<apeiros> I'm quite happy that it is very bright. I was afraid it'd be as dark as the MBP screen
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<benzrf> haskell is thee best
<benzrf> haskell is thee best
<benzrf> oops
<workmad3> L8D: I do intend to play around with erlang or elixir at some point btw :) my current understanding of the way erlang works strikes quite a nice balance between functional and immutable code within actors and an OO message-passing system between actors
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<workmad3> L8D: maybe that'll be my gateway into haskell... maybe not ;)
<workmad3> L8D: I'd hope that even if I went that way, I wouldn't end up making blanket statements about other languages though :P
<workmad3> (also, I have to go... hf ;) )
<L8D> workmad3: I'd say imperative Haskell is different than intuitive imperative models because it's soo much higher level
<workmad3> L8D: imperative ruby is much higher level too :P
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<rpag> workmad3, clojure seems more interesting than those two
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<L8D> workmad3: but in ruby you still write out loops and update variables
<L8D> workmad3: what do you mean by "blanket statements" ?
<workmad3> L8D: I mean like your one from earlier along the lines of 'I think that all professional rubyists would do a better job if they learned haskell'
<rpag> is ruby becoming dated like perl?
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<L8D> rpag: not really
<rpag> its not the new kid on the block anymore
<L8D> no
<L8D> well.... yes
<L8D> node is the new kid
<shevy> yeah
<shevy> rpag but who will replace ruby
<shevy> no please
<rpag> nah
<shevy> javascript...
<rpag> go is the new kid
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<L8D> rpag: nah
<shevy> go is not a scripting language family representative!
<workmad3> L8D: and as for loops and updating variables... sometimes that's the easier way to go... and for a short imperative script, I don't see that as a problem :P
<havenwood> L8D: you didn't get the memo? Node is dying now. >.>
<L8D> go has pretty far to go before it becomes the "new kid"
<workmad3> anyway, must go, hf all ;)
<rpag> havenwood, it is?
<eindoofus> just came from Scala and was debating learning into Play. personally i love all the breadcrumbs RoR has to offer and hate the idea of obsessing over perfect code, which is how I ended up here. i would rather create something than ponder the perfect language.
<L8D> maybe another year
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<shevy> eindoofus but RoR is rails!
<eindoofus> i know that. lol
<L8D> eindoofus: you really need to join the erlang community
<havenwood> rpag: well, the HN stories went from Yay Node to Why I'm Leaving Node
<eindoofus> (R)oR
<rpag> havenwood, it fell fast
<havenwood> rpag: some prominent folk left
<L8D> havenwood: that's just HN though
<eindoofus> L8D, why erlang?
<L8D> eindoofus: bikeshedding
<L8D> they, just like the Haskell community, take it incredibly seriously
<eindoofus> L8D, oh. lol
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<L8D> which is why barely anyone used Haskell or Erlang
<rpag> shevy, i dont know, for one i see functional languages becoming more prominent
* L8D cries in the corner
<panzi> how do I access local variables in buybugs when I call irb from it
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<panzi> in the old debugger it just worked
<havenwood> rpag: I think Ruby has a good future.
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<eindoofus> rpag, in time, but i still feel like there is a lot that can be done before functional programming becomes truly needed across the board
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<rpag> havenwood, i agree, it's made its dent
<rpag> its*
<panzi> no one any idea?
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<havenwood> panzi: i don't understand the question
<rpag> byebug*
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<havenwood> yeah, i figure something to do with Pry and Byebug
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<havenwood> but what?
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<rpag> sounds like a scope issue with binding
<panzi> I try do debug something and have started buybug. now I need to do something more complex for wich I started irb in buybugs but now I can't access any local variables from where debugger was called, wich makes this all useless
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<panzi> in ruby 1.9 debugger I could just access any locals from within the irb that was started from within the debugger
<havenwood> panzi: by `irb` do you mean `pry` and by `buybugs` you mean `byebug`?
<panzi> what good is an irb when I can't access anything?
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<shevy> lol
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<shevy> buybugs
<shevy> hahahaha
<panzi> by buybugs I mean buybug, yes. by irb I mean the buybug command irb
<shevy> panzi I wanna buy some bugs
<panzi> whatever, english
<panzi> strange ambiguous words
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<panzi> I can never keep them apart
<havenwood> like 'goodbye bug!' not like 'buy bugs, buy them all!'
<panzi> I know, still. the words sound exactly the same (to me) so I cant remember which is written which way
<havenwood> panzi: i'm confused how you're using byebug with irb
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<panzi> havenwood: I just typed "irb" in byebug
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<havenwood> uh
<panzi> I want to do something more complex than print values
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<panzi> under the old debugger this was no problem
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<havenwood> panzi: I'm not familiar with using irb with byebug, but maybe take a look at pry-byebug: https://github.com/deivid-rodriguez/pry-byebug#readme
<havenwood> panzi: http://pryrepl.org/
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<panzi> what is this? a irb replacement? I don't need that, I'm running an irb. I need to access locals from that rib session I'm currently having open here
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<rpag> much better irb imo
<panzi> I don't care, that is not what I asked for
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<mostlybadfly> If you're trying to debug you can place a pry call in the code
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<mostlybadfly> Not sure if that is what he was trying to suggest to help
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<havenwood> i like the new Github syntax highlighting colors but the new language bar colors are confusing me
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<havenwood> at least Ruby kept Red
<shevy> guys
<shevy> you are going to shit your pants
<shevy> ...
<shevy> THERE IS A NEW RELEASE OF TCL!!! http://downloads.sourceforge.net/tcl/tcl8.6.3-src.tar.gz
<shevy> a new contender!
<shevy> TIOBE will be in uproar soon
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<zacts> hi ruby hackers
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<shevy> hi zacts
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<rpag> shevy, i remember tcl and tk(for some reason) being a popular combo
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<shevy> yep
<shevy> shows your age man
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<shevy> I'll keep it a secret though
<eam> shevy: I wrote a ruby program today
<rpag> around the same time as visual basic 6 :P
<shevy> YES
<shevy> THE PERL IS GETTING WEAKER IN YOU
<shevy> lol
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<shevy> a pony generator
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<shevy> what's it do?
<shevy> it generates a pony
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<shevy> made clever use of __END__
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<shevy> I guess that is a perlism too right?
<eam> rubyism
<eam> we call them rubyisms now
<shevy> lol
<shevy> I can't tell whether you are trolling me or being serious
<eam> why not both?
<shevy> no
<shevy> trolls are not serious people
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<eam> well I'm very serious
<eam> (which is amusing)
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<shevy> will this display one random pony?
<eam> yes
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<eam> run it!
<shevy> it outputs nothing useful :(
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<eam> what
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<shevy> it's like a splatted pony
<shevy> fell down from the roof or something
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<eam> did you not copy the raw text or something
<eam> all the spaces are missing
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<shevy> ohhh
<shevy> yeah
<rpag_> hahahahaha
<shevy> I can see the pony now
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<shevy> eam
<shevy> why did you write a pony generator
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<eam> to demonstrate how wonderful the ruby language is
<shevy> :\
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<shevy> rpag_ tell me that eam is not serious today
<eam> (and to illustrate __END__ for some folks)
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<eam> also $/ which is similarly amazing
<rpag_> shevy, i copied the script and thought it was cool :P
<rpag_> shevy, came out better than yours
<rpag_> shevy, yours is still entertaining though
<shevy> mine?
<rpag_> the screenshot
<eam> the mutant horses
<shevy> well
<shevy> I copied from the pastie
<shevy> then I tried again using the raw format
<shevy> which worked better
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<rpag_> still cool
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<rpag_> made me laugh out loud :)
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<shevy> :\
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<cj> do any of you have an api framework you prefer to JSON-RPC?
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<androidbruce> triple !'s
<androidbruce> in a nof_if statement
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<shevy> wat
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<v0n> is there a ruby trick to format a string given a hash of placeholders? i.e. "%city (%condition %temperature°)".format_with({ condition: "Clear", temperature: 6, city: "Montreal", foo: "bar")
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<apeiros> >> "%city (%condition %temperature°)" % { condition: "Clear", temperature: 6, city: "Montreal", foo: "bar" }
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<apeiros> eval-in?
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<shevy> you killed it!
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<shevy> the long monitor was too much for eval-in__
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<apeiros_> was wrong anyway
<apeiros_> v0n: "%{city} (%{condition} %{temperature}°)" % { condition: "Clear", temperature: 6, city: "Montreal", foo: "bar" } # => "Montreal (Clear 6°)"
<v0n> omg
<v0n> apeiros_: wonderful
<shevy> aha
<shevy> apeiros has replaced eval-in
<shevy> hence the _
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<apeiros> no
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<apeiros> I just have 2 computers again
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<v0n> apeiros: what is the official doc for that, how is that called? (the %(syntax))
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<apeiros> String#%
<apeiros> % is a method call
<apeiros> and since you call it on a String, it's String#% (# denotes "instance method")
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<ecksit> hey, if i was executing a system commandfrom inside of ruby, is Thread.new ok to use? or will it chew up too many resources
<rpag_> apeiros, shevy it was probably the ° that messed up eval-in
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<apeiros> let's try
<apeiros> >> "%{city} (%{condition} %{temperature})" % { condition: "Clear", temperature: 6, city: "Montreal", foo: "bar" } # => "Montreal (Clear 6°)"
<apeiros> nope
<v0n> apeiros: simply http://www.ruby-doc.org/core-2.1.4/String.html#method-i-25 indeed, that's perfect thanks!
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<rpag_> >> "%{city} (%{condition} %{temperature})" % { condition: "Clear", temperature: 6, city: "Montreal", foo: "bar" }
<eval-in__> rpag_ => "Montreal (Clear 6)" (https://eval.in/220588)
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<rpag_> the comment had it this time
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* apeiros hits eval-in__ with a broom-stick
<rpag_> lol
<apeiros> >> "%{city} (%{condition} %{temperature})" % { condition: "Clear", temperature: 6, city: "Montreal", foo: "bar" }
<eval-in__> apeiros => "Montreal (Clear 6)" (https://eval.in/220589)
<apeiros> >> "%{city} (%{condition} %{temperature})" % { condition: "Clear", temperature: 6, city: "Montreal", foo: "bar" } # what?
<eval-in__> apeiros => "Montreal (Clear 6)" (https://eval.in/220590)
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<apeiros> ah
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<apeiros> comment still contained °, I see, that's what you meant
<rpag_> yup
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<shevy> ohhh
<shevy> Unicode hell for the bot!
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<apeiros> yes
<apeiros> bot has unifail
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<shevy> hehe
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<olivier_bK> i added * * * * * /usr/local/bin/ruby /root/script/stream/exportDataToCsv.rb in my crontab and he do nothing
<olivier_bK> i dont understand
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<jhass> olivier_bK: add a MAILTO
<jhass> so you get errors
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<jhass> or try to find logs
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<crome> or check the cron log
<crome> ^
<olivier_bK> jhass, i find the log in /var/log/cron but i have nothing only (root) CMD (/usr/local/bin/ruby /root/script/stream/exportDataToCsv.rb)
<dorei> crond has been absorbed by systemd, right?
<jhass> or use systemd so the error is just a systemctl status away :P
<jhass> dorei: no
<jhass> while timer units can replace the most common usages, they don't replace all
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<jhass> maybe your script just does nothing?
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<olivier_bK> jhass, i test it before :)
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<jhass> how?
<jhass> sudo env -i /usr/local/bin/ruby ... ?
<dorei> maybe the crontab is run under a user with no access to ruby, etc
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<atmosx> olivier_bK: that's won't be enough
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<atmosx> you need to define nearly anything there is on crontab
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<dorei> i think rvm provides special binaries to be used in crontab
<atmosx> dorei: it does, they don't work.
<dorei> lol
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<atmosx> not special binaries, it provides a shell which sets some local variables before the script being executed, should work in theory doesn't in practice can't tell why.
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<jhass> chruby-exec works well :P
<atmosx> no idea, I'm an rvm fan :-P
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<atmosx> bbl
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<jt__> how do I get a listing of what library comes with ruby?like standard modules in Python?
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<pmarreck> Offbeat question: Why don't the ridiculously different "password requirements" out there just all make sure you pick a password with a high Shannon entropy and/or high Kolmogorov complexity? (both beyond some threshold)
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<eam> pmarreck: some requirements are driven by regulatory policy, others by downstream dependencies on extremely old systems
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<eam> ultimately, the policy is something you need to be able to explain to an idiot, so simple rules tend to win out
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<havenwood> pmarreck: it's easier to explain at least one letter, number, symbol and length requirements than H(X)=-sum_(x)P(x)log_2[P(x)] or K=lim_(T->0)lim_(epsilon->0^+)lim_(N->infty)1/(NT)sum_(n=0)^(N-1)(K_(n+1)-K_n).
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<pmarreck> eam: Here's the simple rule: "Keep typing until the graph goes from 'bad' and red to 'good' and green. Tips: Use combinations of random dictionary words, we can suggest them here<link>. Use numbers and non-alphanumeric characters. Use spaces."
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<pmarreck> havenwood: You can compute the above on the fly
<havenwood> pmarreck: and people are typically eager to get folk to sign up so wanting to make it simple wins out over security
<havenwood> pmarreck: no :O
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<eam> pmarreck: fact is people are going to want to pick bad passwords or they'll switch to the competition
<pmarreck> havenwood: I just described how it would be simple. And why not?
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<eam> picking a stronger password isn't super meaningful all told. 2fa is a better and more user friendly path to pursue
<toretore> anyone putting requirements on my password better hope i need their service more than i hate being told what my password should be like
<pmarreck> "We need a bunch of text aka a password that is hard for a person or computer to guess. Here's a live graph showing how strong we think your attempted password is. We need it to be in the green zone. Tips<link>"
<havenwood> pmarreck: i like the idea, just it would cause anxiety with people not familiar with that format. it's too long to remember, not their usual password, etc.
<pmarreck> eam: 2FA is a bit frustrating. Gotta whip out my phone and fire up an app every damn time. Slows you down.
<eam> pmarreck: you mean otp/google auth? 2fa comes in many forms, such as just text notifications
<havenwood> pmarreck: the Safari direction of trying to get people to let the browser generate your password and store it in your Keychain is one way
<eam> password managers are great, so would be a switch to PKI
<pmarreck> toretore: yeah that's exactly why I hate a new requirement on a site that my existing list of passwords doesn't conform to. "Oh, and your password can't end in a number or non-alphanumeric character... But we need at least 1 of both" is the most recent one I've seen
<eam> once we have password managers and random strings as the norm, PKI is an easy next step
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<havenwood> pmarreck: people would use leet speak versions of songs, poetry, etc still, so you could likely attack it
<pmarreck> eam: yeah i've seen text notifications too. that's OK, I guess. I miss OpenID :(
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<pmarreck> havenwood: the safari solution is fine as long as you only connect from the apple walled garden. Doesn't work on some random browser at a hotel
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<pmarreck> havenwood: If you write a kolmogorov complexity evaluator good enough, you can include leetspeak variants of words
<havenwood> pmarreck: pretty brutal in that case, i suppose you can get to Keychain Access from your walled garden iPhone and manually type it. but yeah..
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<havenwood> pmarreck: which gets back to you needing a password manager
<eam> brute forcing is just not much of an issue
<havenwood> pmarreck: how are you supposed to remember your passwords?
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<pmarreck> eam: big fan of some kind of PKI, actually. Problem is that the private key needs to be super secure, and since nobody's going to remember a private key, it has to get derived from a... strong password, again.
<pmarreck> Or stored somewhere, where it can be hacked
<havenwood> and people can't remember strong passwords
<eam> it doesn't need to be any more secure than the password
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<havenwood> people hardly remember weak passwords
<eam> pki solves phishing
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<eam> which is a much larger threat than brute forcing
<pmarreck> eam: true, that it does.
<pmarreck> eam: where would my private key be stored?
<eam> most banks have policies that undermine password security
<eam> pmarreck: assuming you have a password manager, in that
<pmarreck> eam: hah, don't get me started on banks
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<pmarreck> banks are reliant on the fact that all transactions can be traced and reversed
<eam> pmarreck: I have a list of password policies from various banks, actually: http://frap.net/bad_bank_security.txt
<eam> pmarreck: right, if you have a check from someone you have enough information to add/remove money from their account
<pmarreck> eam: ha, awesome. this is why I came here
<pmarreck> eam: yep, truth
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<pmarreck> eam: and that won't work with PKI. as soon as someone unknowingly compromises your private key and signs something as you with it, you're fucked. you can then, I suppose, initiate the revocation with your revocation cert that you of course generated at the time you made the private key... :)
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<pmarreck> eam: omg dude. I lost it at "case insensitive password" lol
<pmarreck> s/password/passwords
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<pmarreck> There's a hardware signing device out there that I know of, but right now it's only for bitcoin transactions. (the Trezor)
<pmarreck> But then you're... dependent on a physical hardware device. (To be fair, you can regen all your keys with some loong list of words you write down when you set it up.)
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<eam> pmarreck: it's not necessary to do that entire dance with PKI, you can also just re-create a new keypair
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<eam> no need for a distributed system as we have with tls certs
<eam> aka rm .ssh/authorized_keys # no revocation mess
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<pmarreck> eam: yeah but how will you invalidate things that were signed with your previous key?
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<fartface> I've got a simple problem that I can't seem to find the error in. I'm doing a caesar cipher, and I keep getting 'undefined method '-' for NilClass' but I can't for the life of me see the error in my code. http://pastebin.com/nVc3cykT
<zenspider> you don't invalidate them? you just delete your private key, no?
<fartface> It's my ternary conditional that seems to be triggering it, but I can't see anything wrong with it
<zenspider> fartface: it is whereever you have '-'
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<zenspider> alpha.index(e) is returning nil
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<eam> pmarreck: that's irrelevant for simple auth
<fartface> Ohhh, ohh I know what it is... I'm retarded.
<fartface> lol
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<eam> you're not signing anything, you're just completing challenges
<zenspider> fartface: you downcased it and then asked for an uppercase char
<ka-el-man> does anyone know a website, where i can practise ruby methods?
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<zenspider> or something
<ka-el-man> in a fun way
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<fartface> zenspider: I'm checking for an uppercase character in a lowercase array
<zenspider> ka-el-man: the ruby koans
<fartface> zenspider: Durrr!
<fartface> lol
<fartface> smh
<fartface> like 20 minutes I've spent on this.
<zenspider> fartface: just change your if/else and split lower from upper. it'll be a lot more clear anyhow
<zenspider> switch to a case whil you're in there
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<ka-el-man> zenspider:is it interactive?
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<zenspider> case e; when /[a-z]/ then ... ; when /[A-Z]/ then ...
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<pmarreck> eam: ah, good point
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<fartface> zenspider: just had to add .downcase to alpha.index(e) (so alpha.index(e.downcase)) and was good to go
<fartface> Thanks!
<zenspider> now that it is working, try my suggestion
<zenspider> it'll be a lot cleaner
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<fartface> zenspider: It's succinct as I'd like it to be. I'm familiar with case, I don't feel like it's necessary in this case.
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<zenspider> you like that trinary in there?
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<zenspider> hell... you should pull "shifted << " up above the if
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<fartface> Ternarys have their place, I wouldn't save any lines using a case over a simple if/else with just two possibilities
<fartface> This way I keep it on one line vs 4
<zenspider> I didn't say anything about saving lines
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<zenspider> lines don't mean shit
<zenspider> I said it'd make it clearer
<zenspider> first change: http://pastebin.com/jZ7MXZZX
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<fartface> Heh, duly noted, you don't care for ternary operators.
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<zenspider> second change: http://pastebin.com/XUFgtz0R
<zenspider> idiot
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<rikur> I
<zenspider> J
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<rikur> I'm trying to instance_eval a string which in turn uses NET:HTTP and tries to call s.setsockopt. This is not allowed when running in $SAFE=2. I'm not sure what to try next.
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<rikur> $SAFE=2 is set to prevent the script from deleting any files (not perfect, doesn't need to be.. just want to prevent the most obvious cases - solution is used in-house only).
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<zenspider> rikur: why?
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<rikur> zenspider, in my case this is a ruby script running as a "update" hook for git. I'd like to give each project as much flexibility as possible when it comes to enforcing rules per commit (the evaled string) vs. just limiting them to use set methods.
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<rikur> so if a project lead wants, they could do stuff like: push.commits.each .. etc.
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<zenspider> and why does that involve eval'ing strings?
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<rikur> umm. I have a file called ".git.rb" in a special git branch that will be read and evaled to optionally enforce rules per project. If you know of other means than using an eval, please let me know :)
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<zenspider> load works
<zenspider> or require
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<apeiros> ok, starting rails apps mounted via AFP is not viable.
<apeiros> ~100x longer response times
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<apeiros> (development mode)
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<zenspider> apeiros: rsync might be your friend here
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<zenspider> esp rsync w/ fsevents (or whatever)
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<apeiros> that's what I wanted to avoid :-/
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<apeiros> (syncing)
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<zenspider> sshfs ?
<zenspider> I found the latency on that to be better than many
<rikur> zenspider, I'm not sure if I have access to the file per se - I can only load it's contents as a string. Should I save it under /tmp and then load it? :O
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<apeiros> zenspider: I wish the imac had 3 thunderbolt ports. then I could just mount the laptop as an external drive
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<apeiros> currently googling for thunderbolt hubs. not having much luck :(
<zenspider> there are a couple... but they're all hella expensive
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<apeiros> I wonder why I can't find them :-S
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<zenspider> the main one I'm thinking of
<apeiros> ah, yeah, more than just a thunderbolt hub. that's why it's so expensive :-/
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<zenspider> I think it is because there are < 100 customers for it :)
<zenspider> belkin has had a lot of trouble getting that out the door tooo
<zenspider> s/o$//
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<apeiros> damit, do I really have to sacrifice a screen for this? :-<
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<zenspider> there's a couple others on amazon... but they're all in the same price range and do more than they should
<zenspider> one is a ton of different types of ports
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<apeiros> I guess everybody thinks "ooooh, thunderbolt can be daisy chained - no need for hubs". so wrong though :(
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<zenspider> that was pretty much the case with scsi... but the problem is that the thunderbolt devices, esp disks, don't have 2 ports on them
<zenspider> and at that point I'm like, wtf
<apeiros> that could solve my problem too… one TB port for the screens
<zenspider> that's a lot of pixels
<apeiros> zenspider: yeah. also I use TB ports as DisplayPorts - bam, no chaining
<zenspider> don't the displays have TB on the back?
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<apeiros> the displays aren't TB displays
<zenspider> aaah. gotcha
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<zenspider> and the adapter doesn't have 2 ports. ugh
<apeiros> problem with that approach - while it works for my current additional screens, it won't work with the two 4K screens I planned :-S
<apeiros> #firstworldproblems
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<apeiros> well, bed time anyway. gotta split my head about this tomorrow
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<kumarat9pm> Good day all. I am learning about ruby variables and I am able to understand local and global varialbes which are common in many prog languages. But I am unable to understand instance and class variables. Can you please share any link which explain these things with examples? Thanks in advance.
<jhass> well, do you understand classes and objects (instances) yet?
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<ka-el-man> kumarat9pm: it's about scope
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<ka-el-man> that's the difference between them :)
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<kumarat9pm> jhass: Yes, I understand classes and objects.
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<jhass> an instance variable is associated with an object. You can access it from any method belonging to that object
<kumarat9pm> ka-el-man: may be my question is bit weird, they are not there in other prog lang.. why they are implemented in Ruby?
<jhass> both class variables and instance variables are in any object oriented language
<jhass> I've seen at least
<ka-el-man> kumarat9pm: it think maybe it has to do with Ruby being a dynamic language
<kumarat9pm> jhass: hmm ok
<ka-el-man> therefore there are differences in scope
<jhass> some call instance variables fields
<kumarat9pm> ka-el-man: Ohh I see
<jhass> or attributes
<ka-el-man> but i'm not certain about this, can be totaly wrong, that's my take on it
<jhass> ka-el-man: I disagree
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<jhass> I don't see any connection between a dynamically typed language and the scopes it provides
<zenspider> kumarat9pm: instance variables are TOTALLY there in other (OO) languages
<zenspider> class variables are too, depending on the language
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<zenspider> jhass: yeah. that doesn't follow
<kumarat9pm> zenspider: But there is no specific mentioning of them in other languages and as well special notations like @ and @@.. That's where one of my confusion.
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<jhass> kumarat9pm: what are the "other languages" here?
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<kumarat9pm> jhass: python, Perl
<ka-el-man> variable has scope, @variable has a wider scope, @@variable can be used anywhere in the program