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<riceandbeans>
isn't parens the old style for arguments?
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<riceandbeans>
like foo.include?('bar')
<riceandbeans>
isn't that the old way?
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<riceandbeans>
and foo.include? 'bar' the new way?
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<null2>
.
<Ox0dea>
riceandbeans: It's mostly a stylistic preference, but parens are sometimes mandatory.
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<null2>
Question: I'm trying to troubleshoot why my terminal output with funky characters (colors and stuff) is not being encoded into valid JSON by JSON.generate
<null2>
They payload is being sent by Net::HTTP, and I'm thinking of serializing the object using to_yaml, but what's the best way to view the deserialized content? Puts eats some of the funky encoding
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<VeryBewitching>
Ox0dea: halp
<VeryBewitching>
Oh, not present?
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<patrick99e99>
has anyone here used Stomp for publishing messages ?
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<jhass>
null2: inspect / p
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<Ox0dea>
VeryBewitching: You rang?
<VeryBewitching>
Oh, yes, resolved. Was playing with variations of "deprecate"
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<VeryBewitching>
Thanks though :D
<Ox0dea>
Are there variations, then?
<Ox0dea>
> Try and enjoy programming with Ruby 2.3.0-preview1
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<Ox0dea>
"Deprecatively" is a mouthful.
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<VeryBewitching>
I have a class Component that can be deprecated by another Component; both remain relative, but one definition is the more widely accepted definition.
<VeryBewitching>
I wanted to refer to the deprecator and had a stupid moment. Or rather I allowed the spell checker in RubyMine tell me that deprecator wasn't a word, then searched Google for "deprecater"
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<VeryBewitching>
s/relative/relevant
<Ox0dea>
Does RubyMine not permit custom dictionaries, then?
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<VeryBewitching>
You can save the word to the dictionary (which I've now done) but initially, no, it didn't recognize the word.
<shevy>
patrick99e99 never heard of Stomp before
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<Ox0dea>
VeryBewitching: Some cursory research into the matter reveals it's quite easy to add your own wordlist to RubyMine's spellchecker.
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<patrick99e99>
shevy: ok thanks... stackoverflow it is
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<VeryBewitching>
Ox0dea: When they talk about "the proper noun", it's that one.
<VeryBewitching>
What a mouthful.
<Ox0dea>
Welsh is bonkers.
<Ox0dea>
One of those four consecutive Ls is basically pronounced like a K.
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<grill>
this is more of a general software engineering question than a ruby question, but how would I initialize a static class?
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<blubjr>
what do you mean
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<jhass>
grill: I tend to use a singleton if I feel the urge to do that
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<grill>
I need to set some class variables before I call a class' methods
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<jhass>
have a look at the singleton stdlib
<grill>
i'd rather not have to instantiate an object at all though
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<jhass>
any good reason?
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<Ox0dea>
grill: There's #class_variable_set?
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<jhass>
I don't think it's about doing it dynamically
<grill>
i'm writing chef code, and i'd prefer to keep my code's gating statements (idempotency stuff) as concise as possible. If i use class methods, i can do it with one line. if i have to instantiate and object every time, I can't
<jhass>
grill: seriously, actually look at what I proposed
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<grill>
sec
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<grill>
jhass I still have to instantiate an object once, right?
<jhass>
it's implicitly done when you call instance
<jhass>
the first time you call it I should specify
<grill>
sure, but I'd still have to do the assignment, i.e. a = Example.instance
<jhass>
no
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<grill>
on the other hand, with a static class, i could just do Example::dosomething
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<grill>
ok, so this singleton class looks like it could be workable. how would I go about giving it paramaters when calling instance? a = SomeClass.instance(parama, paramb) ?
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<jhass>
grill: I don't think it supports that
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<grill>
sigh
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<grill>
yeah. it doesn't
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<jhass>
it'd be weird if you don't know whether your arguments are used or ignored in a call to it anyway
<jhass>
pass them to the method you're calling / define setters?
<jhass>
but then it probably shouldn't initialize without the data present
<jhass>
so ideally the initializer would pull the data
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<grill>
ok
<grill>
so, can i create an object and run one of its methods on a single line?
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<jhass>
sure, just Foo.instance.method
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<grill>
I mean a non-singleton one
<shevy>
hmmm
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<shevy>
I see in a .gemspec s.required_rubygems_version = Gem::Requirement.new("> 1.3.1") and also s.rubygems_version used
<grill>
so something like Foo.new(param).somemethod()
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<grill>
does that work in ruby?
<shevy>
is it recommended to use .required_rubygems_version=? so far I have only been using .rubygems_version?
<shevy>
aha I guess I was using it incorrectly lol
<jhass>
grill: sure
<grill>
ok
<jhass>
grill: new is just a method call too
<grill>
that'll have to do for now
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<jhass>
shevy: I never used it and wouldn't unless I'm made aware that something I do needs a particular one
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<shevy>
jhass sorry, which one variant do you mean? you are using .rubygems_version= ? or .required_rubygems_version= ?
<jhass>
neither
<shevy>
aaaah
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<Ox0dea>
Spoken like a true Archer.
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<jhass>
"You're not using the latest version of something? [Closed Won't fix]"
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<shevy>
that sounds mean like Ulrich Drepper!
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<tlolczyk>
I need to either use the same ruby temp file or generate about 5000 files. Now I can rewind the file and rewrite, but how can I empty the file?
<jhass>
tlolczyk: iirc there's IO#truncate or something
<tlolczyk>
Hmmm. I will if it turns out to slow. I think even now the file is so short it does not actually save it to disk.
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<jhass>
another option is to open a pipe (IO.pipe, pipe(2)), and let the process inherit the read end and then tell it the FD (parameter, environment)
<jhass>
that's basically how systemd/launchd socket activation works btw
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<jhass>
but if stdin free, that's basically the same for free
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<jhass>
tlolczyk: and if the process you pipe the data too is awkward and demands a "file", a named pipe would ensure there's no disk access no matter where you create it
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<doll>
I'm making a fake online book store with activerecord and mysql; I need to create a promotions table (2 for 1 books, 3 for 2 books, etc). I'm having a hard time finding any documentation for something like this and #mysql is asleep. Any suggestions?
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<Ox0dea>
It seems even Fiddle can't be finagled into unprepending a module.
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<doll>
did you jiggle the keys and give it gas?
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<Ox0dea>
It's a musical instrument.
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<chastised>
hi I just installed ruby on a debian machine with apt-get . but it won't run a ruby file or invoke irb
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<Ox0dea>
> Bugs? You must be kidding; there are no bugs in this software.
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<Ox0dea>
From pacman's manpage. :P
<shevy>
ubuntu is faster than debian?
<Ox0dea>
Debian has flavors.
<tlolczyk>
I feel sort of embarassed to ask this, but I can't quite figure out the docs. I have a hash call it h. The keys are md5 values. The values are arrays of objects having the same md5 as the key. I would like to generate an array of keys sorted by the number of elements in each array.
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<shevy>
well you can .sort or .sort_by in any way you want to
<Ox0dea>
tlolczyk: Are you finding collisions?
<tlolczyk>
shevy, that's the part I can't figure out.
<Ox0dea>
tlolczyk: Well, you said you have arrays whose MD5s are all the same? That means they collide.
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<Ox0dea>
*arrays whose elements' MD5s
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<tlolczyk>
Ox0dea, and what are the two arguments to the block, and what is the block used for?
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<shevy>
chastised cd /usr/bin; ln -s ruby2.1 ruby
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<tlolczyk>
That's the confusing part.
<Ox0dea>
tlolczyk: The key and the value for each element of the hash; I've called the first `_` there to indicate that we've no interest in the key for the purposes of our sort.
<VeryBewitching>
shevy: sudo ;)
<shevy>
you have a hash so you have key,value
<shevy>
VeryBewitching you have to ask for permission? BECOME THE SUPERUSER!!!
<Ox0dea>
And the block just explains how to do the sorting; in this case, you want to sort based on the size of the array in `v`.
<VeryBewitching>
chastised: You have to put sudo before any of these commands
<VeryBewitching>
shevy: I try to make my occupation of root prompts quick-lived events :)
<shevy>
wimp
<shevy>
:>
<shevy>
I am scared when I am superuser and on /
<shevy>
I usually chicken out and go to a safe directory instead
<VeryBewitching>
I've accidentally done things, bad things, and though it was long ago, I remember how badly it hurts when you've chowned something incorrectly
<Ox0dea>
shevy: Was this about ten years ago, then?
<shevy>
yeah
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<pontiki>
hi
<VeryBewitching>
Hi pontiki
<shevy>
I think I used linux perhaps 2 years or so; the biggest surprise was about the tab completion itself btw, not about rm
<tlolczyk>
Ox0dea, yes but how does the block tell the sort how to arrange the elements. The traditional way in other languages is two give two key value pairs and return a value based on which is bigger.
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<Ox0dea>
tlolczyk: Right, that's what the block to #sort needs to do.
<Ox0dea>
But #sort_by is nice and convenient and just lets you specify the "sort key", so to speak.
<VeryBewitching>
I've been on Linux since '99, RedHat Mahnattan
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<shevy>
you can not be very young anymore VeryBewitching!
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<shevy>
the usual tell-tale sign of old age is nostalgi
<shevy>
erm nostalgia
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<shevy>
and when you think that the 1980s and 1990s had great music
<VeryBewitching>
That wasn't nostalgia, I hate RH :D
<tlolczyk>
VeryBewitching, beat you by three years and slackware!
<shevy>
hahaha
<shevy>
yay slackware!
<pontiki>
VeryBewitching: then that's nastaligia :>
<tlolczyk>
On a 75MHZ PackardBell.
<VeryBewitching>
pontiki: haha
<shevy>
yay for no resources!
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<shevy>
real man languages, like grunt and stomp and whack
<shevy>
cave man programming
<VeryBewitching>
BASH NOT WORKING
<shevy>
they scribbled algorithms on the cave wall
<VeryBewitching>
k
<VeryBewitching>
<-- stops
<shevy>
yeah
<shevy>
imagine if they discover a cave man writing code
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<Ox0dea>
I wrote my entire solution to Project Euler #54 on paper in C.
<VeryBewitching>
I think I could program reality.
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<Ox0dea>
(I seriously did, but I'll spare us all the embarrassment of saying where and why.)
<VeryBewitching>
I still write in C sometimes.
<VeryBewitching>
Qt too
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<shevy>
you could write in ruby-qt
<shevy>
my new year's task was to learn C in 2015
<VeryBewitching>
Ya, the bindings on Ubuntu are bound to the system ruby
<shevy>
I didn't do it :(
<VeryBewitching>
Which I've removed
<VeryBewitching>
But I could. Kross support in KDE will soon allow for writing scripts for the KDE desktop in Ruby; though I don't know how far along it is.
<shevy>
what desktop environment are you using right now?
<VeryBewitching>
C isn't so much difficult to learn as it is challenging to do well with, all the time. At least that's how it was for me.
<shevy>
yeah
<shevy>
ruby spoiled me
<shevy>
but there is no way around C
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<VeryBewitching>
I used to throw a gel stress ball up and down and walk around my house for a few hours and then go write code for 10 hours.
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<Ox0dea>
It's excessively optimized, but that's what C is for these days.
<pontiki>
koosh balls here
<quazimodo>
has ruby 2.2+ got a way to 'uninclude' a module?
<quazimodo>
i see that there have been several attempts at a library to do this
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<quazimodo>
but it appears that they are a little older
<pontiki>
your courier penmanship is impeccable
<Ox0dea>
quazimodo: It can be done from a C extension, but banister hasn't touched remix in forever.
<Ox0dea>
pontiki: Ha!
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<Ox0dea>
I couldn't even begin to say where the original resides.
<quazimodo>
Ox0dea: hrm ok.
* pontiki
ponders, writing software in roundhand
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<quazimodo>
I'll use another approach then :)
<Ox0dea>
quazimodo: I've been trying to "unprepend" with Fiddle, but no luck.
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<Ox0dea>
Each non-singleton Ruby object's first 16 bytes in memory are some flags and its class; I thought copying these from the original before prepending then sticking them back in after might do the trick, but it didn't.
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<Ox0dea>
quazimodo: I have good news.
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<quazimodo>
Ox0dea: they invented teleportation that can be used to teleport food out of your stomach so you can eat and eat and eat ?
<Ox0dea>
That `n` will need to be 20 if you're on 64-bit.
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<quazimodo>
ha
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<quazimodo>
Ox0dea: that seems scary
<Ox0dea>
quazimodo: Just do it.
<Ox0dea>
What could possibly go wrong?
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<Ox0dea>
(I'm not being facetious, mind.)
<Ox0dea>
Ruby's method lookup algorithm is remarkably simple; if you remove the module from the ancestor chain, it won't participate.
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<quazimodo>
so you need to hold onto the old pointer location
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<quazimodo>
before you do your include
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<Ox0dea>
Well, yeah; is that a dealbreaker?
<quazimodo>
and if in between your include & uninclude 10 other things get included what happens
<Ox0dea>
Chaos.
<quazimodo>
which in a testing scenario
<quazimodo>
since i'm only doing this in specs
<Ox0dea>
This is your fault for wanting to uninclude, you know.
<Ox0dea>
Why not just `include` into anonymous classes instead?
<quazimodo>
yepss
<quazimodo>
that's an incredible idea
<quazimodo>
i like
<Ox0dea>
Yay, Ruby!
<quazimodo>
here's another one
<quazimodo>
how do you mock a method on a class (this is in rspec) if that method is defined on an anonymous module (the class actually doesn't have that method so rspec doesn't let you mock it)f
<Ox0dea>
I pretty much exclusively use it when I'm writing LOLCODE. ^_^
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<VeryBewitching>
pontiki: Colour reminds you what the mind won't accept if you're willing to colour against the norm.
<pontiki>
haha, that is awesome! great playtime font
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<Ox0dea>
VeryBewitching: Should we morally oppose the rainbow?
<Ox0dea>
Rather, are we morally obligated to do so?
<pontiki>
the grey-bow flag?
<Ox0dea>
That is a thing, I think.
<pontiki>
might be, there's tons of them
<VeryBewitching>
Ox0dea: Don't get me started in that direction, cause this channel will become #metaphysical
<Ox0dea>
Bring it.
<Ox0dea>
Metaphysics is my shit.
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<VeryBewitching>
If you vary the colours in the rainbow, in a painting, whathaveyou, you are creating two many new uses in the process of finding the tone you're looking for.
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<pontiki>
for me, trying the make the colour right causes me to lose the picture itself
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<Ox0dea>
VeryBewitching: But what is really lost in that process? Ought we have any investiture in the fates of the hues unused?
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<pontiki>
shape, line, texture, pattern still seem to do best for me
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<pontiki>
lots of people like my value studies, not so much the colour versions
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<VeryBewitching>
pontiki: Could be that you're more interested in definition and structure than in impact beyond yourself at this time in your process. Keep painting. :)
<pontiki>
*shrug*
<pontiki>
oh yeah, i'm not looking for answers
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<pontiki>
just questions to explore
<quazimodo>
Ox0dea: the gem says it's about reporting?
<Ox0dea>
I don't particularly like to have to say it, but color is very important.
<Ox0dea>
quazimodo: Fiddle is in the standard library?
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<baweaver>
well my break is about through
<baweaver>
does that count?
<Ox0dea>
shevy: I found out that the four bytes after an Object's RBasic struct contain its included ancestors, so I wrote this: https://eval.in/468047
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<Ox0dea>
Why you would realistically need ephemeral inclusion is difficult to say.
<VeryBewitching>
I got a 500 at that URL
<zotherstupidguy>
shevy i dont think the people who write the next breakthrough hanghout here :)
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<VeryBewitching>
shevy: I'm usually always working on something that I find is of use to me, at this time of night :D
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<Ox0dea>
I'm checking under every rug for a workaround around the fact that we can refine #method_missing but not #const_missing.
<pontiki>
lemur: did you write your break? through? :D
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<baweaver>
oh I've made one for rails, I just can't Open Source it yet....
<zotherstupidguy>
shevy alibaba looks like sh*t and got a lot of billions in one day :D i don't think they do breakthroughs :)
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<baweaver>
let's just say you can do some real fun things with ActiveRecord when you hack it a bit.
<Ox0dea>
Alibaba was something of a cultural breakthrough.
<zotherstupidguy>
thats very true!! the funny thing for me i was hangzhou, alibaba's base a couple of month ago, i didnt know the whole story of alibaba then
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<arup_r>
lets lest here..
<arup_r>
>> IO.new
<ruboto>
arup_r # => wrong number of arguments (0 for 1..2) (ArgumentError) ...check link for more (https://eval.in/468080)
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<arup_r>
oh. That is why I need the doc to read :D
<Ox0dea>
arup_r: You have ri, don't you?
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<Ox0dea>
VeryBewitching: Gesserit?
<VeryBewitching>
Tleilaxu == FaceDancer
<Ox0dea>
Oh, I see.
<arup_r>
Here https://github.com/teampoltergeist/poltergeist, in this option `phantomjs_logger` I need to give a IO like object, so that I can suppress the JS console.log .. What is the good IO object for this ?
<VeryBewitching>
Or rather Tleilaxu.is_a? FaceDancer would be more appropriate
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<VeryBewitching>
Now that's a sight that can use consideration.
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<certainty>
moin
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<wa_r_ch_i__ld1>
@Ox0dea so xdotool is working and i know how to send the key value and check for the window etc, but now I have the issue of only calling it if the popup has already been rendered, trying to figure out how I can check for that in the JS
<wa_r_ch_i__ld1>
apparently its impossible ;)
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<VeryBewitching>
That prompt precedes the DOM being loaded.
<VeryBewitching>
Or I would be quite surprised if it didn't.
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<wa_r_ch_i__ld1>
@VeryBewitching ah so document ready should work
<wa_r_ch_i__ld1>
;-D
<wa_r_ch_i__ld1>
thanks
<VeryBewitching>
No.
<VeryBewitching>
When you receive a challenge for that type of authentication, no data has transfered hands yet.
<VeryBewitching>
Other than the request to authenticate.
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<VeryBewitching>
Unless you authenticate, you shouldn't see the result HTML/JS that would be served at that location.
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<wa_r_ch_i__ld1>
i'd hate to rely on sleep()
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<Ox0dea>
wa_r_ch_i__ld1: You're probably gonna have to poll the window title. :<
<wa_r_ch_i__ld1>
from bash?
<wa_r_ch_i__ld1>
ive got something like
<wa_r_ch_i__ld1>
a = `if wmctrl -l|awk '{$3=""; $2=""; $1=""; print $0}' | grep "Authentication Required"; then echo true; fi`
<wa_r_ch_i__ld1>
but trying to keep it running in rails
<wa_r_ch_i__ld1>
not sure
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<Ox0dea>
Yikes.
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<sjums>
Ox0dea, I'm glad you corrected that. My non-native englished combined with a dictionary didn't make sense out of your sentence, and I felt stupid ._.
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* sjums
roars
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<Ox0dea>
English are hard sometime.
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<sjums>
is*
<Ox0dea>
I used up all my fancy before the semicolon.
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<sjums>
damn.. you're trolling :b
<Ox0dea>
I really did mean "incredulity", though.
<sjums>
You win this time, Ox0dea ! :D
<Ox0dea>
There's a comma even most native writers don't use! <3
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<Ox0dea>
So many cannibalized Susans.
<sjums>
In danish (my native tounge) that's a pretty require comma in such a sentence
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<Ox0dea>
Aye, it is required, but most people don't use it.
<Ox0dea>
"Let's eat Susan." vs. "Let's eat, Susan.".
<sjums>
:(
<sjums>
Susan!! :(
<Ox0dea>
Susan, wait! Don't get eated!
<sjums>
eaten* ?
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<sjums>
you're not trolling again, are you?
<Ox0dea>
All in good fun.
<sjums>
From now on I believe your every mistake is intentional! :b
<Ox0dea>
I shall deeply enjoy abusing this immunity.
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<Ox0dea>
Many moons ago, I made the mistake of trying to convince a Dane to support UTF-8 because otherwise he wouldn't even be able to write in his own language.
<Ox0dea>
I ate a particularly scrumptious crow when I realized Danish can be written with ASCII.
<Ox0dea>
</storytime>
<sjums>
didn't even know that æ, ø and å is in ASCII :3
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<Ox0dea>
Whoops. He was Dutch.
<Ox0dea>
My profound lack of linguistic culture is, as I'm sure you're aware, entirely intentional.
<norc>
Ox0dea: I once tried to convince a colleague that 0 - 0.25 equals -0.75. Suffice it to say the stare in my face when I tried to prove my point with a calculator....
<norc>
was priceless...
<Ox0dea>
norc: That is cringe-worthy. :P
<Ox0dea>
Oh, hey, you got merged!
<norc>
Didn't feel a thing.
<Ox0dea>
Ha.
<bhaak>
well, the ij is certainly not in ASCII :)
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<sjums>
ij ?
<Ox0dea>
Think "Dijkstra".
<bhaak>
but of course there's an obvious ASCII representation
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<Ox0dea>
norc: The dead code is now double-dead.
<Ox0dea>
> And it's all thanks to you. Thank you, Mar^Wnorc.
<[spoiler]>
> "I once tried to convince a colleague that 0 - 0.25 equals -0.75."; for a good three seconds I was like "it doesn't?"
<Ox0dea>
[spoiler]: Would you like me to show you how 0.999... == 1?
<apeiros>
thanks. early morning and faith in humanity already lost.
<sjums>
Rule #2 Always double tap
<[spoiler]>
Ox0dea: I know that one :P
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<sjums>
sorry apeiros, it's my fault, isn't it?
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<[spoiler]>
Ox0dea: aren't mathematicians splut between for and against that, though?
<[spoiler]>
splut!
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<apeiros>
splut, splotted, splotten
<[spoiler]>
Sounds like an onomatopoeia
<Ox0dea>
[spoiler]: No, I think not.
<matti>
Hey apeiros
<apeiros>
hi matti
<[spoiler]>
sounds, reads, whatevs
<Ox0dea>
[spoiler]: There's really no room for opinion on the matter; it just takes a slightly unintuitive leap to see the correctness of it.
<apeiros>
I love how all my migrations have `def down; raise "NO!"; end`
<Ox0dea>
There are no numbers between 0.999... and 1, so they must be equal.
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<apeiros>
Ox0dea: uh, that argument is weak
<Ox0dea>
Is it?
<apeiros>
in IN, there's no number between 1 and 2. they are not equal.
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<Ox0dea>
What differentiates two numbers except the ability to place another between them?
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<apeiros>
they're just adjacent
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<Ox0dea>
Sure, but we're obviously talking about R.
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<[spoiler]>
apeiros: it's "a thing" in general, but I find it strange even if I know about it. basically any X.000... == X-1.999... (same applies for X.Y000... == X.(Y-1)999...)
<norc>
apeiros: adjacency in real numbers... ?
<bhaak>
in R, they can't be adjacent as there are no adjacent numbers in R. you don't have a successor function there
<Ox0dea>
And the "move the decimal" "proof" is rather convincing, even for most laypeople.
<apeiros>
hrm, IN is not easy to find in the special chars table :(
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<apeiros>
probably should have said s/weak/bad/. it's correct. but as I understood it the idea was that it should be an intuitive argument. and IMO it's not intuitive.
<[spoiler]>
^
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<apeiros>
the concept of no adjacency in IR is not intuitive (IMO)
<Kuukunen>
apeiros: I think "there's no numbers between them" is a proper argument if we're talking about real numbers... or hell, even rational numbers
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<bhaak>
Kuukunen: but natural numbers are much more intuitive to most of us and there the "no number between them means equal" doesn't hold
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<Kuukunen>
bhaak: but we're talking about decimals here :P
<Ox0dea>
0.999... is an integer. :P
<Kuukunen>
it is!
<[spoiler]>
lOL
<[spoiler]>
LOL*
<Kuukunen>
but you have to prove it is
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<Kuukunen>
so you can't start from "it's obviously a natural number, therefore it's a natural number"
<Ox0dea>
Well, I didn't do that?
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<bhaak>
it helps if you first state that there are multiple ways to represent the same number. that's often forgotten and leads to easy confusion.
<Ox0dea>
I'm gonna try to represent 0.999... in Ruby.
<Kuukunen>
Ox0dea: sure, but I was responding to bhaak
<Ox0dea>
Kuukunen: Right, sorry.
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<Ox0dea>
bhaak: s/multiple/infinite/, mind.
<Ox0dea>
Well, most numbers, anyway.
<bhaak>
Kuukunen: the difference between a real number and a decimal with an infinite representation is ... not obvious
<bhaak>
Ox0dea: I'm a programmer. there is only 0, 1, and infinity :)
<bhaak>
Kuukunen: thinkinh about it, an infinite decimal representation without a repeating pattern is _still_ a decimal. so yeah, they are probably the same, although intuitively, I would want to put those into another category
<Ox0dea>
bhaak: But not in the technical sense of the word, right?
<[spoiler]>
lol unclide
<Kuukunen>
bhaak: why?
<[spoiler]>
Unbonnie and unclide
<Kuukunen>
bhaak: or... which ones in different categories?
<Ox0dea>
[spoiler]: It does use #include?, which just compares against the start and end.
<[spoiler]>
sjums: no u
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<[spoiler]>
Ox0dea: I know, but using === is mathematically wrong, even though it is a clever trick
<[spoiler]>
in the example
<Ox0dea>
[spoiler]: Well, yes, you've foiled my ruse.
<[spoiler]>
I'm such evil
<certainty>
Ox0dea: isn't that #cover? that just compares against the start end end?
<certainty>
and, even
<bhaak>
Kuukunen: the infinite decimals without a pattern. it feels like cheating. for example for pi, "yeah, you can write this number as a decimal, you just need the precomputed value to write it and an infinite amount of paper to write it down on".
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<Kuukunen>
bhaak: well, welcome to the wonderful world of infinities :P
<Ox0dea>
certainty: You're right.
<bhaak>
Kuukunen: OTOH, 0.9999... is easily expressed (or compressable). but that might be my programmer mind.
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<Ox0dea>
The difference tends to only crop up in weird cases like String#succ.
<Kuukunen>
bhaak: "precomputed value" in there doesn't really make much sense from math point of view though
<certainty>
Ox0dea: phew, thought for a minute i broke code :)
<Kuukunen>
bhaak: thinking from programmer point of view, math often allows for "infinite computational power"
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<bhaak>
Kuukunen: yes. but as we are talking about "representation", you need a way to know what you want to write (even though of course, the value exists already in a platinoc sense in the world of math)
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<certainty>
does it exist until it's somehow represented?
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<certainty>
representation can also be a thought I guess
<bhaak>
that's not a problem as such
<Kuukunen>
bhaak: well, in math you don't have to know HOW to write a representation to prove it exists :P
<Kuukunen>
or well, I guess that also deals with the constructivism debate :P
<bhaak>
certainty: for example in information theory, you have the idea that information is already existing. you only extract it and put it into a different form. so it already existed, even though you didn't see it.
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<Ox0dea>
Well, don't we have to conclude that information in and of itself is without a spatial component?
<Ox0dea>
Lest Pi would fill the universe.
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<bhaak>
yes
<Kuukunen>
Ox0dea: but the information in pi isn't infinite
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<Ox0dea>
But that's what it means to be irrational.
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<norc>
Our common decimal representation is just infinite.
<bhaak>
the information in pi is probably quite low as you can easily represent it in a few simple formulas
<norc>
Not the information in pi.
<Kuukunen>
yea
<Kuukunen>
Ox0dea: that would be like saying the information in "1.0000..." is infinite
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<Kuukunen>
"pi" exists outside of its decimal representation :P
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<Ox0dea>
That was a bit of a straw man, but I take your point.
<Ox0dea>
It's not as if circles have any trouble existing.
<Kuukunen>
I don't think it's really a strawman
<Kuukunen>
like, you could say "but 1.000... is not infinite! it's just one, followed by 0 after 0 after 0"... so you're describing a way of generating infinite stream of 0s... but you can also describe a way of generating infinite stream of pi decimals
<Ox0dea>
We can quite easily compress the "notion" of pi, as it were, but not pi itself.
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<Kuukunen>
but that's not how it goes, you don't have to "compress" pi, it's just one number... it's like compressing the number 2
<Kuukunen>
it's just that decimal representation for pi is not a good one
<bhaak>
what is pi itself? that looks to me as if asking if the universe has a preferred number notation
<certainty>
:D
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<Ox0dea>
Kuukunen: Start gzip on /dev/urandom and we'll resume when it finishes. :P
<apeiros>
in baseπ, π is 1
<apeiros>
but I prefer base
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<Ox0dea>
∀ n ∈ ℝ: 10ₙ = n₁₀
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<Ox0dea>
Discuss.
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<Kuukunen>
apeiros: hm, I don't think you can use pi for a base :P
<apeiros>
can't read the symbols. they render too small here :D
<certainty>
too brainy for me
<Ox0dea>
Kuukunen: Of course you can.
<apeiros>
Kuukunen: sure can.
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<Ox0dea>
Any n not {0, 1} can be used as the base of a positional number system.
<Kuukunen>
apeiros: I mean "base" deals with the representation of a number... the way you write it down
<Ox0dea>
Kuukunen: But you just voiced your opposition to that line of defense.
<apeiros>
yupp. and baseπ makes writing multiples of π trivial :)
<Kuukunen>
apeiros: you would have to redefine "base" for it to work
<apeiros>
no, I wouldn't
<apeiros>
base conversion works the same
<Kuukunen>
apeiros: but how would you write 2 in baseπ?
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<Kuukunen>
apeiros: and before you start using 0, 1, ... 9, remember, those are base 10
<Ox0dea>
Kuukunen: The notion of "digits" breaks down a bit, but the concept of a base holds.
<Ox0dea>
e is a perfectly acceptable base, and so is every other real except 0 and 1.
<Kuukunen>
well, I can be wrong too :V
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<[spoiler]>
Kuukunen: you weren't wrong, you were just left right
<[spoiler]>
less right
<Kuukunen>
oh right, we're talking about different base here
<[spoiler]>
I need coffee
<certainty>
but there is only one base that's the real deal. Which is the 3. base
<Kuukunen>
it's the exponential base vs. the numeral system base
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<certainty>
or was it the 4th?
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<Musashi007>
does anyone have an idea how to get the ip address of the wireless bridge point they are connected to ?
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<[spoiler]>
I literally just typed my password backwards twice in a row
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<apeiros>
[spoiler]: your password is a palindrome?
<[spoiler]>
apeiros: unfortunately, not
<apeiros>
then that's quite a fascinating feat. do you often think in backwards? :D
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<Musashi007_>
why?
<sjums>
or did you do it backwards upon last forced renew on the AD server?
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<Ox0dea>
[spoiler]: Your UNIX password?
<[spoiler]>
yeah unix password
<Ox0dea>
[spoiler]: You can use your arrow keys. :P
<Ox0dea>
(But don't.)
<Ox0dea>
Musashi007_: Nothing of interest in the output of `ip addr`?
<Musashi007_>
@Ox0dea running on osx. ifconfig doesn’t show much.
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<Musashi007_>
Nor does traceroute.
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<[spoiler]>
apeiros: i can talk and write backwards relatively fast, especially when I warm up after a few minutes
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<Ox0dea>
Okay, da Vinci.
<Musashi007_>
funny thing is that I know I’m connected via the rogue access point
<Ox0dea>
Musashi007_: One approach is apparently to ping scan yourself?
<tobiasvl>
[spoiler]: ask David Lynch if he needs your expertise in the third season of Twin Peaks
<[spoiler]>
but I don't do it normally, not sure why it happened now. is tarted typing it backwards the third time when I realised it
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<Ox0dea>
How does that even happen?
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<[spoiler]>
Ox0dea: I know a few other people that can do it from HS
<Musashi007_>
oh? how is that different from a regular ping?
<[spoiler]>
well, few being 2 girls from book club
<Ox0dea>
Musashi007_: Well, you just try every address in a given range, and only the ones that're up will respond.
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<Ox0dea>
[spoiler]: Do you mean you started typing "staplebattery", or "elpatsyrettab"?
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<[spoiler]>
what, no I didn't mean backwards like letter for letter backwards, more as in... split.reverse.join(' ') or inverting syllables. or talking in little endian with syllables
<Musashi007_>
@Ox0dea scanning now.. Hesitantto do so because I don’t ahve a program to do this and I’m always nervous to install new programs
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<Ox0dea>
Musashi007_: You really ought to use `nmap`; it's pretty well vetted.
<[spoiler]>
my password is like a little sentence thingy and I typed the "groups" backwards. instead of typing aa 22 cc, i typed cc 22 aa
<Ox0dea>
[spoiler]: Yes, that's what I meant.
<Musashi007_>
@Ox0dea thank you.. looking into it now
<Ox0dea>
Musashi007_: Sure thing.
<Ox0dea>
[spoiler]: I was using "correcthorsebatterystaple" as your password.
<Ox0dea>
!xkcd 936
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<arne_>
Hello Folks, is there a way to do select and reject at the same time?
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<arne_>
like splitting an array with a condition
<Mon_Ouie>
See Enumerable#partition
<arne_>
great, thank you
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<arne_>
Mon_Ouie, and when doing it with a hash, is there some way i clean keep my hash?
<arne_>
[["fullSearchQuery", "asdas"], ["page", "0"]] <= right now im getting this as result
<Mon_Ouie>
So you'd want 2 hashes as a result?
<arne_>
yes.
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<Ox0dea>
arne_: map(&:to_h)
<arne_>
yeah that's great, but not as easy than everything else in ruby, right?
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<Ox0dea>
That is remarkably little code for such an operation.
<arne_>
if i do it this way, it creates a new hash from an array, right?
<apeiros>
it creates two hashes from two arrays, yes
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<Ox0dea>
arne_: The vast majority of the methods Hash gets from Enumerable return nested arrays of key-value pairs.
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<arne_>
so i could just walk over the original hash with .each and have the same effect
<arne_>
which i have to do either way
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<Ox0dea>
Then you didn't really need to partition?
<arne_>
well, i would love to use it, because of the one-liner
<Mon_Ouie>
You can do everything that's done by the Enumerable module by using #each
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<arne_>
yeah, i know, but i have to "split" this hash by a condition, and if i have to transform the result into a hash first, there is no benefit form using partition
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<Ox0dea>
You don't actually have to transform it back into a Hash.
<arne_>
that's true but it's not a hash then :/
<Ox0dea>
What's the difference between a Hash and an array of key-value pairs for your current objective?
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<arne_>
well code is prettier if i filter stuff by their keys
<arne_>
with key value pairs it wouldn't be as pretty.
<arne_>
too bad partition does not output hashes :/
<arne_>
why does select do that, though?
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<Ox0dea>
It's true enough that a lot of Hash's Enumerable methods should probably return Hashes, but they just don't. :<
<[spoiler]>
cotcot: i agree, but I prefer vanilla.
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<Mon_Ouie>
Someone else's typing their password backwards it looks like
<[spoiler]>
Mon_Ouie: LOL
<arne_>
cool, i didn't know about assoc, atleast learned somethig
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<Ox0dea>
arne_: The essential justification is that it would be unnecessary duplication to give Hash custom methods when defining Hash#each to yield key-value pairs and including Enumerable gives us so much functionality for free.
<Ox0dea>
I agree with you that it's a minor pain point, but invoking #to_h to get back actual Hashes isn't going to end the world.
<arne_>
i understand, but it confuses me, do it 100% or 0% but not 73%
<arne_>
imho, select and reject shouldn't do it then either
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<Ox0dea>
WET = Write Everything Twice.
<Ox0dea>
arne_: Do you want WET code?
<arne_>
no, i said you can also do 0 %
<Ox0dea>
So you're boycotting Hash#select?
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<arne_>
if i had to, yes
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<Ox0dea>
Do it.
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<arne_>
but know im getting confused what does return a hash and what not, and at some point i will think, while it's not true, "select doesn't return a hash, i won't use it"
<cotcot>
aucun n'a que ce dis sens tu
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<[spoiler]>
I am not sure if it's really a pain point. I actually expect methods from Enumerable to return arrays when used on Gashes
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<[spoiler]>
Hashes
<arne_>
so you're not using select?
<Ox0dea>
arne_: It's only #select, #reject, and their mutative counterparts that return Hashes.
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<Ox0dea>
#select! is nice for paring a Hash down in-place, so I won't be joining your boycott.
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<arne_>
what about the principle of the least surprise, did i hit the tiny amount of surprise there is in ruby?
<cotcot>
sens n'a aucun tu ce dis que
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<Mon_Ouie>
!kick cotcot not a nice bot
cotcot was kicked from #ruby by ruboto [not a nice bot]
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<Mon_Ouie>
Other inconsistencies between Hash and Enumerable: #member? and #include? operate on keys only and not on key/value pairs
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<[spoiler]>
arne_: what do you mean? Hash#select *does* return a Hash
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<arne_>
yeah, and partition does not, which left me really surprised
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* arne_
<= :OOO
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<Ox0dea>
arne_: Think you'll be able to bounce back?
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<arne_>
bounce back, where?
<Ox0dea>
To loving Ruby.
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<certainty>
:D
<Ox0dea>
Or is this the straw that puts you on the camel's back?
<Ox0dea>
(Not that Perl's hashes are any saner.)
<arne_>
i'll stick to brainfuck, it's ugly, but it doesn't surprise me
<Ox0dea>
You think brainfuck is ugly?!
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<arne_>
the beauty is in the operations
<Ox0dea>
For what it's worth, you'd be in for quite the surprise if you didn't write your program to be interpreted with varying cell sizes.
<Ox0dea>
I realize you were being facetious, but every language has a gotcha or ten.
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<Ox0dea>
I'm just gonna leave this here.
<Ox0dea>
> Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it.
<[spoiler]>
arne_: that's why Array#to_h works so nicely, so you can convert to hash nicely
<Ox0dea>
[spoiler]: But that's so unclever!
<Ox0dea>
arne_ doesn't want to be able to debug his code.
<arne_>
i already said something about it
<Ox0dea>
arne_: Your apparent fixation with "pretty" and lines and minimizing invocations gives ample reason to suspect that the above quotation is applicable; please read it several times.
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<arne_>
i don't optimize by lines, that's the point i do not safe lines nor performance when using to_h
<arne_>
so it's not good, that's my point
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* certainty
waits for that damn test suite to finish
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<Ox0dea>
certainty: ^C is cruise control for "the tests don't not unfail".
<arne_>
and besides that, it's not even easy to read
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<arne_>
so it's ugly, slow and +1 line code
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<certainty>
uglow
<arne_>
instead i can just hash.each do |k,v| hash1[k]=v, if condition else hash2[k]=v, which is nicer to read, probably faster(no clue), and not even more code
<arne_>
which renders partition in hashes useless to me, all i am saying
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<Ox0dea>
arne_: But you would use #partition if it returned Hashes?
<arne_>
ofc, it would be as cool as select and reject
<Ox0dea>
"Cool"? Wouldn't it be "harder to read" by your definition?
<arne_>
no
<Ox0dea>
So it's the `map(&:to_h)` part of the solution that kills the legibility?
<arne_>
yes.
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<arne_>
Which is ugly, slow and hard to read.
<arne_>
if it was fast, or easy to read, but it's nothing, not even fast, because the array is useless in the first place
<Ox0dea>
Wrong language, bud.
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<arne_>
i can't understand how you can not see what i mean
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<arne_>
i only want one benefit from this .map to_h stuff, but i have none
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<[spoiler]>
technically, this could be optimised by the VM, but alas MRI VM does almost no optimising (if any)
<[spoiler]>
no actually, it couldn't really be optimised because so much mutants
* certainty
understands arne
<certainty>
time for my walk
<[spoiler]>
arne_: open a pull request which implements partition the way you want it to work
<arne_>
[spoiler], that also goes for every method, that is not written i C already
<[spoiler]>
arne_: not all C methods can be optimised either, because they just rely on API calls mostly
<arne_>
i actually i have no opinion on how it has to work, i would even be fine if every enum-method would return key value pairs
<arne_>
im bothered about "something yes, sometimes no"
<[spoiler]>
even on arrays?
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<[spoiler]>
oh pairs
<arne_>
[spoiler], "c-methods" dafuq?
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<[spoiler]>
arne_: methods implemented in C?
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<arne_>
[spoiler], oh i get it, well, methods written in c doesn't get optimized at all, are they?
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<arne_>
it's the bytecode which gets optimized in rubinius/jvm, am i wrong?
<[spoiler]>
arne_: by humans only
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<[spoiler]>
nah not really
<arne_>
yeah but you were talking about vms
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<[spoiler]>
maybe a little by LLVM(Rubinius)/JVM, but there's not much that can be done about it
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<[spoiler]>
You'd have to drop some language features that rely on mutation and meta programming
<Ox0dea>
arne_: MRI/YARV is a virtual machine that interprets compiled bytecode.
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<Ox0dea>
So a little under a third of them are "optimized".
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<arne_>
:o interesting, why would they have VM instructions visible in ruby?
<Ox0dea>
Why not?
<[spoiler]>
^
<Ox0dea>
This language wants you to be happy.
<Ox0dea>
Are you happy when you can't find something?
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<norc>
arne_: Because its damn useful to be able to peak into everything. Whether you want to look at the AST, compiled ByteCode or peak into the internals of objects...
<norc>
Without the need to have a debugger.
<[spoiler]>
s/peak/peek/g
<arne_>
:o you can access the bytecode?
<arne_>
that's cool
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<[spoiler]>
you can even generate/run it
<Ox0dea>
[spoiler]: No?
<Ox0dea>
RubyVM::InstructionSequence#load is currently commented out. :<
<Ox0dea>
Because there's no "verifier".
<[spoiler]>
oh
<norc>
Ox0dea: You know what sucks?
<[spoiler]>
maybe rubinius can, then? I don't remember if it was rubinius or mri or both
<Ox0dea>
norc: Hm?
<[spoiler]>
norc: vacuum cleaners?
<norc>
Ox0dea: I really want the damn CPDBEUG on trunk x_x
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<norc>
[spoiler]: I was thinking black holes. But close.
<Ox0dea>
norc: I thought it was there?
<norc>
Ox0dea: Try it.
<norc>
I mean its reported, but I wanted to play around with it yesterday Q.Q
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<Ox0dea>
norc: It's dp() for AST nodes, yeah?
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<arne_>
sure you can do it in rubinius, since everything but the vm is ruby, but i was surprised MRI has it, too
<norc>
Ox0dea: Its a deeper debug flag that steps through the entire compiler in each stage, showing you the AST as it processes it.
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<arne_>
does that mean you can have compiled ruby code in ruby and have some sort of obscurification ( with mri? )
<Ox0dea>
No, not yet.
<arne_>
too bad, that would be useful
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<arne_>
im writing some code which will be on customer-servers, would be nice to be able to protect it from "theft"
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<norc>
Ox0dea: That is one of the best documented pieces of code in the ruby trunk.
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<norc>
While this is sarcastic, it is also rather true.
<norc>
Whatever a verifier is. :-/
<Ox0dea>
norc: Heh, yeah, there's a lot of crazy in MRI.
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<Ox0dea>
And so little documentation! :<
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* arne_
wants a cazy example
<Ox0dea>
But hey, ko1 and nobu seem to have a firm enough understanding of how it all hangs together.
<norc>
Ox0dea: The best way to get documentation is to git blame, pray that you find a feature request on the japanese bug tracker, and then hope that google translate doesn't produce complete nonsense.
<Ox0dea>
That sounds about right.
* arne_
really wants a example for crazy in the MRI
<[spoiler]>
Also, I am still conflicted about `.?` in 2.3.0
<arne_>
im adding conditions to a sequel model, table = table.where x is so ugly
<norc>
[spoiler]: The amazing unmaintainable code you can do with op overloading in C++ is downright amazing.
<Ox0dea>
[spoiler]: It's `&.` now.
<norc>
Can secure your job for a lifetime.
<[spoiler]>
norc: lol i don't know why people abuse C++ that much
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<Ox0dea>
Because it's there.
<[spoiler]>
Ox0dea: isn't `&.` different from `?.`?
<Ox0dea>
[spoiler]: There is no longer any such thing as `.?` in Ruby.
<arne_>
already forgot what &. did
<norc>
?. however
<[spoiler]>
I write C/C++ as my job, and I've very rarely had to abuse operators
<[spoiler]>
overload* lol
<[spoiler]>
Well I write more C and C++ wrappers for the C
<arne_>
according to norc, you maybe should.
<norc>
[spoiler]: If you want to get a feeling for unmaintainable, just look at all the boost headers. Its downright disgusting how many compiler bugs they actively abuse.
<arne_>
Ox0dea, never liked perl
<Ox0dea>
arne_: It seems right up your alley?
<[spoiler]>
I actually try to avoid using boost whenever pissible. I am not sure why people like it so much. Sure, it's convenient, but so i a bullet to the head when you're tired
<[spoiler]>
possible
<arne_>
Ox0dea, how is that?
<Ox0dea>
arne_: It lets you squeeze a lot of functionality into a small space if that's what you want to do.
<Ox0dea>
So does Ruby, mind, but apparently not enough for you. :P
<arne_>
stop mocking me :( i only had trouble with that one piece of .. opinion
<[spoiler]>
Ox0dea: Wasn't `?.` rejected because it conflicts with `a.foo?.bar` because `#foo?`, so it was a `a.?foo.bar` and I remember there being talk about `&.`, but i thought it would be `.?`s raising sister or something
<arne_>
doesn't mean im unable to do it
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<Ox0dea>
[spoiler]: It was `.?`, and it was rejected for numerous reasons.
<[spoiler]>
thank fuck
<Ox0dea>
I concur.
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<Ox0dea>
It felt weird at first, but I've taken a liking to `foo &. bar`.
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<Ox0dea>
It parses, it's easier to scan, and it better clarifies intent.
<Ox0dea>
I hope it catches on.
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<[spoiler]>
Yeah, I don't mind `&.`, but all the ?s and .s and more ?s were too confusing (and we established I don't like too many symbols in one place :P)
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<Ox0dea>
AimlessRAven: Are you sure you want to generate a link and not just initiate a download?
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<AimlessRAven>
ok download also is good for me
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<Ox0dea>
AimlessRAven: That'd be the #send_data method.
<[spoiler]>
brb
<arne_>
Ox0dea, not using MRI right now :)
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<Ox0dea>
AimlessRAven: Well, I reckon you'll still need a tempfile on disk, so #send_file is a little more intention-revealing.
<arne_>
the sequel guy let's me use sql functions in block, i read the code but didn't get it, how does he do that? does he overwrite method missing for the block?
<Ox0dea>
arne_: #instance_eval is much more likely.
<Ox0dea>
It lets you execute a block "as" some other object.
<arne_>
ruuuuubyyyyyyyyyyyyyyyyyyyyyyyyy
<arne_>
yeah, but i can use any function i want, even functions that doesn't exist like blaaaah(:name,something)
<arne_>
is that method missing, atleast?
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<Ox0dea>
Yes, that's method_missing. :P
<sapslaj>
method_missing in the context of the block.
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<certainty>
context_missing is the method of the block
<arne_>
context_missing is how i feel right now
<certainty>
:)
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<arne_>
certainty, someone wrote a lisp dialect for the rubinius vm
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<certainty>
that guy has some interesting projects
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<arne_>
monitor says "monitor is going into power saving mode, press any button to abort" /me presses power button, /me feels retarded
<certainty>
:D
<shevy>
no
<shevy>
you must press the any button man
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<grepwood>
why does it take extremely long to sha1 a file in ruby? the file is only 385MB large
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<adaedra>
It's faster than shasum binary on my computer ._.
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<jhass>
adaedra: but more than their patience apparently
<adaedra>
:p
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<n00py>
.
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<apeiros>
adaedra: I bet they calculated the sum via ruby
<adaedra>
apeiros: you mean, do the algorithm themselves?
<apeiros>
(as opposed to just using Digest::SHA1.file)
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<apeiros>
no, I mean, create a SHA1 instance, read the file in ruby, and increment the SHA1 instance
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<adaedra>
ah.
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<Zurg_>
join
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<arne_>
JOIN WHAT?
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<Zurg_>
guys, i'm new in ruby and i have a question, i'm trying to program a little game, is really a small one based on basic functions, more like an exercise than a real game :D.
<Zurg_>
here's my problem
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<Zurg_>
i don't really know how to put more than one "if"
<avril14th>
0o
<arne_>
put "if"*2
<huyderman>
lol
<avril14th>
well, you can type as many if as your keyboard allows
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<ruby-lang402>
Hello, I have a very specific question. Is there any place in Warden that passes user requests as method names?
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<jhass>
ruby-lang402: maybe elaborate a bit on where you're coming from
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<ruby-lang402>
jhass: Sorry if I'm asking a bad question...let's see how to clarify. I'm trying to get up to speed on the Warden codebase and I want to know if user input is passed to Warden in a way that would take the user request and initialize a new method for authentication.
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<ruby-lang402>
i.e. can a user directly impact a method name
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<ruby-lang402>
to add a bit more color, obviously not an admin user who is setting up the server, but an end user who would potentially send requests to be auth validated by warden
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<norc>
So... What is the best way to request a backport for a bugfix already committed on trunk nearly a year ago?
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<norc>
Ox0dea you surely know
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<jhass>
ruby-lang402: the potential offenders are quite easily found with grep: http://p.jhass.eu/x.txt It's not that many, what you want to do is find the sources of the first argument primarily. For manager.rb that's easy stroked off, it's a static value
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<jhass>
ruby-lang402: I would expect everything in hook to come from the library user, but that remains to be verified of course
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<syg>
i am having trouble getting my compass gem to run from cli, also i seem to have to install it with sudo even with rvm installed, ubuntu 15.10
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<dmj>
hi, I'm trying to edit some exsting ruby code, how would I rebuild it to produce an executable?
<dmj>
I see there is rake, gem, and bundle
<dmj>
is there like a 'build' command
<eam>
dmj: ruby is interpreted, so there's no building. "bundle install" will install dependencies, but you can just run it and it will be interpreted at runtime
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<eam>
you may need to "bundle exec ..." to run your thing with the bundled dependencies in its environment
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<shevy>
good morning #vietnam!
<shevy>
I mean, #ruby
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<eam>
shevy: good morning
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<dmj>
eam: so I call 'bundle install *.gemspec' and then 'bundle exec' ?
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<eam>
just bundle install - it will read the Gemfile in the current directory
<dmj>
oooo
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<dmj>
so it produces a gem file from a gemspec
<jhass>
if you have the sources of a gem and want to build and install it, it's gem build *.gemspec && gem install *.gem
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<eam>
a gemspec is an instruction on how to build a gem package
<eam>
it's similar to a spec file for rpm, if you're familiar with that
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<dmj>
ah
<dmj>
jhass: so that will put it in my /usr/bin/<proj>
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<dmj>
eam: so does it copy the source code somewhere else?
<dmj>
to interpret it
<jhass>
if the gemspec defines any .executables it will install them to what `gem env` prints as executable directory or what you specify with the -n flag to gem install
<dmj>
like a gem library or something or rather, and put the execute scripts in /usr/local/bin
<jhass>
gem build will package the library up in a gem file, which is a zip + metadata
<jhass>
gem install can install gem files into the system
<jhass>
by extracting the files into the right locations
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<dmj>
jhass: nice, very cool
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<dmj>
jhass: have you played with sinatra?
<jhass>
a bit, sure
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<eam>
dmj: no, interpreted languages on unix work by reading the file being run
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<dmj>
jhass: do you know if the order in which you declare your handlers in the do blocks has an impact on routing, http://lpaste.net/145194
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<Ox0dea>
dmj: It does; the first match is the one that gets used.
<Ox0dea>
dmj: Try using `#!/usr/bin/cat` as the shebang to get a feel for what's happening when interpreted languages are run as "executables".
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<shevy>
stop putting cats in your shebangs!
<Ox0dea>
But this isn't a UUoC!
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<Ox0dea>
That said, you can't spell "demonstrative" without summoning a few demons.
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<EvilDMP>
Hello, I hope you can help me. I want to get Jekyll working again on OS X 10.11. gem install jekyll tells me "You don't have write permissions for the /usr/bin directory.", so I think that's Apple's Ruby, not Homebrew's, but brew install ruby tells me "Warning: ruby-2.2.3 already installed"
<EvilDMP>
how would you advise me to proceed?
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<FailBit>
does homebrew still insist on making /usr worldwritable
<FailBit>
because whether it does is going to be directly proportional to my ability to assist you
<FailBit>
s/ability/willingness
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<EvilDMP>
FailBit: I don't know; what I know is Python, I want everything else to work as simply as a pencil or a fork
<adaedra>
homebrew wants /usr/local as root:admin and 0775
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<EvilDMP>
but I can munge permissions if required
<FailBit>
EvilDMP: prepend /usr/local/bin to your path
<FailBit>
that should get it
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<adaedra>
EvilDMP: OS X 10.11 locks /usr (except /usr/local), so you can't install gems system wide. You can install gems at user level if you want.
<EvilDMP>
adaedra: user level's good enough for me I think
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<adaedra>
why?
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<adaedra>
gem install --user-install jekyll
<EvilDMP>
adaedra: why is it good enough for me? because I only plan to run things as myself
<adaedra>
You'll have to add the missing directory to your PATH and you're ok to roll.
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<adaedra>
Also, it seems it uses the OS X provided ruby (2.0)
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<EvilDMP>
adaedra, FailBit: I once more have a working jekyll, much appreciated
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<fschuindt>
there's any way to distribute an Ruby software as a closed-source binary for Windows? (Ocra don't protects the code)
<doddok>
use c++ instead
<fschuindt>
I don't know any C++, or C :(
<doddok>
it very bad
<fschuindt>
I think its going to be quite hard to replicate what's already done in ruby
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<fschuindt>
By the way the software is done and I just realized it may become a good source of income if I go commercial
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<doddok>
ruby is toy lang , try to finf more powerful lang
<adaedra>
no
<fschuindt>
oh, that offends me hahaha
<fschuindt>
I take it very seriously, I am ruby professional
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<doddok>
you?
<fschuindt>
All my income come from it, you know
<adaedra>
Don't take trolls too seriously.
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<doddok>
first y need learn googling
<fschuindt>
adaedra: Yea, I just forgot about the trolls
<fschuindt>
doddok: bye
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<doddok>
strange dude
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<shevy>
lol
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<shevy>
<doddok> first y need learn googling
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<jhass>
fschuindt: are you sure you need to keep the source hidden from your customers? There are quite a few examples that don't in the dynamic language world
<shevy>
the trollpowers are rising along with the moon cycle
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<adaedra>
no feeding.
<shevy>
he just wants to get rich quickly via ruby!
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<_blizzy_>
yeah, don't feed, or else the other team will win.
<_blizzy_>
(dota2 ref)
<doddok>
interesting what kind of software he wants create?
<shevy>
twitter 3.0 in brazil probably
<shevy>
in java
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<jhass>
mh, what's twitter 2.0?
<shevy>
though, he could use e. g. C++ and mruby as scripting language
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<shevy>
dunno... the post-rewrite from twitter away from ruby :(
<rehat_>
how do most script auto install gems needed for a script to run correctly
<_blizzy_>
scala's a good language though
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<adaedra>
rehat_: what scripts
<shevy>
rehat_ do you mean via a gem or e. g. bundler? proper .gemspec files will have dependencies list, Gemfile should as well, then it just is resolvement
<jhass>
rehat_: most are packaged up as gems for easier distribution on top, the rest generally uses bundler these days
<rehat_>
ahh
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<rehat_>
so would a user need to manually install a gem that is needed for my script to work?
<fschuindt>
it's a MMO bot haha
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<adaedra>
rehat_: package your script as a gem, so dependencies are pulled with when the gem is installed
<jhass>
fschuindt: so "modification allowed" is actually a huge selling point IMO
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<doddok>
y a serious person, you a plaing games?
<shevy>
rehat_ you need to have the user install add-ons
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<shevy>
if your script has require 'foobar' and foobar is some gem, then the user will have to do "gem install foobar" first, or run bundle(r)
<rehat_>
ok thanks, for now I will add it in the readme or something. Its just one gem but if I start needing more I'll make my script a gem
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<_blizzy_>
which is why you pull all your gems in a Gemfile
<_blizzy_>
so they can just run 'gem install bundler && bundle install'
<jhass>
fschuindt: a proper license can restrict legal redistribution at least down to only diffs, depending on your and the customers jurisdiction
<shevy>
rehat_ these things will become a lot clearer when you built your own first gem btw
<fschuindt>
jhass: yes, but people who uses mmo bots dont care about this
<adaedra>
rehat_: if you don't bundle as a gem (which you should), write a Gemfile so people can `bundle install` or `gem install -g` to install automatically from project's folder.
<rehat_>
adaedra: thanks will do
<_blizzy_>
yeah, it's what I did with my Pokemon bot.
<_blizzy_>
I just added a Gemfile.
<jhass>
fschuindt: true, but they'd share an opaque binary likewise
<jhass>
fschuindt: you only truly get around that with a thin client that has as much logic as possible on a server that requires a login. And even then you can expect logins shared
<fschuindt>
jhass: my plan was a login based system... A site with a http API
<doddok>
shhtp API!!!
<fschuindt>
jhass: restricted by a hardware-id system
<doddok>
shttp API!!!
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<fschuindt>
can someone just mute this guy, please?
<doddok>
dont use http
<adaedra>
doddok: stop it
<_blizzy_>
hmm, I'm tempted to make a youtube clone in either Ruby, Java, or PHP. Though I already know what you all will recommend. :p
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<jhass>
_blizzy_: crystal, obviously
<_blizzy_>
jhass, ofc. :)
<doddok>
go
<_blizzy_>
I should look into crystal.
<Papierkorb>
uargh Go
<doddok>
go ideally for youtube
<fschuindt>
_blizzy_: you protected your software using gems?
<Papierkorb>
"Let's create a new language which inherits unreadable syntax from Erlang with a mix of ActionScript"
<adaedra>
If you're going to start ague about languages, do it in -offtopic, please.
<_blizzy_>
doddok, lol, it';s funny because im working on a facebook clone in .NET
<shevy>
how is the gem variant in crystal called? shard?
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<fschuindt>
_blizzy_: ty, I was not sure if I had understood
<jhass>
shevy: yeah
<_blizzy_>
adaedra, lol, I wasn't going to argue.
<shevy>
\o/ I remembered without googling
* shevy
does a happy dance
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<_blizzy_>
I wish I could install ruby 2.2.x
<havenwood>
_blizzy_: You can't?
<_blizzy_>
but gems seem to work with 2.1.x
<_blizzy_>
the gems I need work with 2.1.x but not 2.2.x
<shevy>
you can do it _blizzy_ come on
<havenwood>
_blizzy_: Which gems?
<doddok>
adaedra, lets ban genious scoolboys
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<_blizzy_>
nokogiri
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<shevy>
damn ok I understand now
<Papierkorb>
_blizzy_: huh? works great in 2.2.3
<dsimon>
nokogiri doesn't support 2.2? :-O
<jhass>
it sure does
<_blizzy_>
oh, nokogiri works with 2.2.3? let me download it then!
<Papierkorb>
Rails needs nokogiri, and that alone is pretty much reason enough to expect it to work with the latest ruby
<shevy>
ruby is all about rails
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<havenwood>
shevy: Ruby par Avion!
<_blizzy_>
rails is great. my favorite mvc framework
<zwdr>
I love Ruby but abbhor Rails
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<zwdr>
different folks different strokes etc
<shevy>
and different cats
<zwdr>
but it really feels wrong to say "Ruby is all about Rails"
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<adaedra>
well, Rails is a well know Ruby thing, some people do come to ruby by rails (including me)
<Papierkorb>
wat hitting ^D in pry in a rspec3 test crashes MRI. I'm positive that I'll never be able to reproduce this in a small example though.
* havenwood
pokes Rails with a stick
<bougyman>
adaedra: that's one of my least favorite things about ruby
<bougyman>
being in ruby pre-rails gives some a bad taste about rails.
<shevy>
adaedra :(
<shevy>
bougyman yeah!
<havenwood>
Rails is nifty. I do like Roda!
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<bougyman>
roda <3.
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<Papierkorb>
Ok, so I have a minimalistic HTML parser written in Ruby (Can't use nokogiri there). I have the HtmlParser::Error class, which inherits from RuntimeError. Should this error inherit from StandardError instead? To me, it happens at run-time, and thus, is a RuntimeError?
<havenwood>
Papierkorb: Use Oga?
<havenwood>
shevy: I think crystalline entities form shards.
<havenwood>
shevy: Like a Rubyist custs gems.
<havenwood>
cuts*
<havenwood>
shevy: Or maybe a Crystalist cuts shards?
<Papierkorb>
havenwood: no native extensions. also, no big gems at all there.
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<havenwood>
Papierkorb: ah
<Papierkorb>
havenwood: Opal code, that is, Ruby -> JS transpiling to run that stuff on the client
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<shevy>
havenwood yeah, nice mnemonic
<Ox0dea>
Tim Toady : Perl :: Chris Tull : Crystal
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<Ox0dea>
jhass: You should totally change your name to Chris Tull.
<jhass>
I'm afraid I don't get the reference
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<Papierkorb>
jhass: say it out loud
<adaedra>
ahahah.
<_blizzy_>
lol.
<eam>
Mina Swan
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<_blizzy_>
I remember why I downgraded.
<havenwood>
:D
<_blizzy_>
nokogiri doesn't play nice with windows on 2.2.3
<Papierkorb>
Windows? Condolences man!
<imperator>
_blizzy_, how's that?
<_blizzy_>
I actually like windows.
<_blizzy_>
"cannot load such file -- nokogiri/nokogiri" even though it's installed.
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<imperator>
oh, i wonder if they didn't ship a binary for 2.2 yet
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<imperator>
i thought so, though - let me check
<Papierkorb>
_blizzy_: have you rebuilt your gems after updating?
<doddok>
you a looser
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<adaedra>
!mute doddok
<Papierkorb>
+1
<imperator>
looser?
<havenwood>
what's loose?
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<_blizzy_>
gefootloose
<imperator>
foot looser?
<havenwood>
hanging loose?
<_blizzy_>
*footloose
<imperator>
get your sunday shoes
<_blizzy_>
Papierkorb, yes.
<eam>
set loose the dogs of snark
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<Ox0dea>
eam: s/loose/slip/
<_blizzy_>
heh, rails 4.2.0
<havenwood>
I need a good pair of Ruby slippers.
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<_blizzy_>
well, I got ruby 2.2.3 working with Nokogiri \o/
<_blizzy_>
thanks to this line "gem 'nokogiri', '>= 1.6.7.rc3'
<_blizzy_>
"
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<eam>
Ox0dea: such a prescriptivist
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<Ox0dea>
eam: The original line just sounds really good.
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<Ox0dea>
That Billy Shakes fellow sure had a way with words.
<shevy>
Billy Shakes it loose
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<Ox0dea>
They say he might've been a eunuch.
<eam>
eunuchs! I know this!
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<Ox0dea>
It's a eunuch's system!
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<dtordable>
-
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<Ox0dea>
drbrain: You beat me to it.
<drbrain>
Ox0dea: hehehe
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<drbrain>
I was following the other examples in the output that used 1/10
<drbrain>
and forgot you could do that
<Ox0dea>
Fair enough.
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<grilled-cheese>
If I have a ruby script with a require for win32/registry, but I want it to be cross platform how do I exclude that windows specific section of coding?
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<Papierkorb>
grilled-cheese: require "win32/registry" if RUBY_PLATFORM =~ /win/
<adaedra>
You may use RUBY_PLATFORM to see under what you run
<adaedra>
ninja'd
<Papierkorb>
grilled-cheese: I don't know what the exact value for it is, but it's stored in RUBY_PLATFORM
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<grilled-cheese>
cool
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<grilled-cheese>
thank you
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<Papierkorb>
cheers
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<adaedra>
!unmute doddok
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<FailBit>
that's so unnecessary
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<FailBit>
chanserv has its own mute/unmute commands
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<havenwood>
FailBit: The important thing is that a robot is in charge!
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<Ox0dea>
> I know not with what weapons World War IV will be fought, but World War III will be fought with bits and clones.
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<slash_nick>
the more bots are involved, the better
<Ox0dea>
Let's make it all bots.
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<doddok>
chuvachki
<doddok>
hehe
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<doddok>
did u see os on rust?
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<VeryBewitching>
G'day folks.
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<lacrymology>
I'm looking for temporal expressions, this seems to be the "standard" (read: first google result), but the project seems frozen for the last 2 years and I'm always wary of still projects, should I use it, or find something more active? https://github.com/mlipper/runt
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<doddok>
try to find
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<shevy>
Ox0dea pretty cool but it should happen through several different people rather :P
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<Ox0dea>
shevy: Where would we be if Linus had felt that way?
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<_lazarevsky>
hey guys
<_lazarevsky>
this is not really a ruby question per se
<Ox0dea>
Then GTFO.
<_lazarevsky>
more of an programming question
<_lazarevsky>
hahaaa
<_lazarevsky>
ok
<_lazarevsky>
well let me shoot away
<_lazarevsky>
and then i'll gtfo
<_lazarevsky>
so I'm prepping for an interview
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<_lazarevsky>
and I came across this question which tripped me
<_lazarevsky>
I decided I'm gonna do the interview in ruby
<_lazarevsky>
-> Describe a program that could detect whether a chunk of text in a document is a list or not. There are no obvious indicators like "1." or "-" or "*" however each list entry is on a new line. An example list would be:
<_lazarevsky>
line 1
<_lazarevsky>
line 2
<_lazarevsky>
dsfsdfsdfsdf sdfsdf sdfsdf
<_lazarevsky>
etc
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<_lazarevsky>
so I'm iterate over the lines of a document
<_lazarevsky>
iterating*
<Zarthus>
The real test is how to properly ask and formulate questions. You failed.
<Ox0dea>
Sounds like you need a heuristic!
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<Ox0dea>
There are only so many sane ways to prefix list elements.
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<Ox0dea>
Oh, wait, never mind; you're apparently trying to do NLP
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<adaedra>
_lazarevsky: how many channels did you ask this question to at the same time?
<_lazarevsky>
this is the second one
<_lazarevsky>
I asked it in rails
<_lazarevsky>
hang on though
<Ox0dea>
_lazarevsky: You're being very bad.
<dn5>
How do I append new value inside key with out replacing the old one, regarding arrays
<_lazarevsky>
can't I detect \n from the doc?
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<_lazarevsky>
if there's a line break
<jhass>
dn5: show current state, input and desired output please
<_lazarevsky>
in succession
<doddok>
read_lines. group(start with "line") >1
<dn5>
jhass: pseudo: @hash = {key => value}
<Ox0dea>
_lazarevsky: How does that have anything to do with detecting lists?
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<jhass>
dn5: without pseudo please
<jhass>
dn5: that's called hash and not array btw
<_lazarevsky>
Ox0dea: im just thinking out loud here
<dn5>
jhass: one second please, let me paste it
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<_lazarevsky>
Ox0dea: like.. if there are multiple lines which end with \n in succession
<_lazarevsky>
then that's one indicator of a list..
<Ox0dea>
_lazarevsky: How are you to differentiate between paragraphs and lists?
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<_lazarevsky>
Ox0dea: that's the second problem
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<Ox0dea>
All lines end with '\n', silly.
<_lazarevsky>
:)
<_lazarevsky>
fair enough..
<_lazarevsky>
it's not a straight forward answer at least
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<_lazarevsky>
I was thinking for a sec whether I'm missing something obvious
<_lazarevsky>
alright.. thanks guys
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<_lazarevsky>
wondering*
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<dn5>
jhass: Sorry, no, thats not what I'm trying to do. I don't know how to explain it very well :<. I want key "description" to have (assing) two seperate gets.chomp
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<Ox0dea>
>> h = Hash.new(''); h[:foo] << 'bar'; h[:foo] << 'baz'; h[:foo] # dn5: Something like this?
<_lazarevsky>
Ox0dea: so I guess I need a way to identify when enter was pressed..
<Ox0dea>
_lazarevsky: Why on earth are you talking about keyboards?
<_lazarevsky>
well because
<_lazarevsky>
this is a list
<Ox0dea>
Your task is to process some text.
<_lazarevsky>
is it not
<_lazarevsky>
fair enough
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<_lazarevsky>
I see you point
<_lazarevsky>
ahaaaa I got it!
<_lazarevsky>
if the first word of each sentence
<_lazarevsky>
line rather
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<Ox0dea>
It simply can't be done in the general case given the current state of the art in NLP.
<dn5>
Ox0dea: that still owerwrites the value from before, let me try again
<shevy>
Ox0dea well linus only worked on the kernel
<_lazarevsky>
could fit in the line above
<jhass>
Ox0dea: uh, bad example. that's the same string for all keys
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<_lazarevsky>
then that means that it's a new list item
<_lazarevsky>
I got it!
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<_lazarevsky>
Ox0dea: did I make sense?
<Ox0dea>
_lazarevsky: Not really.
<_lazarevsky>
Ox0dea: I had an epiphany here :)
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<_lazarevsky>
Ox0dea: so get the character count of the first word of a line
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<Ox0dea>
> I'm doing a (free) operating system (just a hobby, won't be big and professional like gnu) for 386(486) AT clones.
<Ox0dea>
shevy: ^
<_lazarevsky>
and check how many spaces there are between the last word of the line above and the end of line
<Ox0dea>
_lazarevsky: That's a very complicated way to say you're going to detect lists based on indentation.
<_lazarevsky>
if the first word of the new line could fit on the line above
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<crankharder>
not sure the verb i'm looking for. it's not combination/permuation, is there a way to combine all elements of two arrays e.g. [1,2].something([3,4]) => [[1,3],[1,4],[2,3],2,4]] ??
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<Ox0dea>
crankharder: #product.
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<crankharder>
boom. that.
<crankharder>
ty
<Ox0dea>
Sure thing.
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<doddok>
a.map {|x| b.map {|y| f(x,y) } }.flatten
<Ox0dea>
Needs more #flat_map.
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<Ox0dea>
Also, #product is variadic, so your implementation sucks.
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<Ox0dea>
> ruby is toy lang , try to finf more powerful lang
<Ox0dea>
I hope you like the taste of crow.
<adaedra>
why do you dig so deep, Ox0dea, especially to unbury low-level trolls.
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<shevy>
you guys like doddok
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<shevy>
what kind of variables do we have in ruby ... we have local variables, @instance_variables and @@class_variables. did I forget any other?
<Ox0dea>
adaedra: Scarcely any digging was involved; that was the second thing he said today, and / isn't a particularly hard key to hit. He momentarily came out of his troll costume to demonstrate his smurts, and I felt it appropriate to put him down.
<ilhami_>
lol why are you accusing me? You don't know me guys.
<ilhami_>
:/
<shevy>
you already revealed too much information
<doddok>
because they generate a lot of messages
<jhass>
ilhami_: I'm not saying you did that on purpose
<ilhami_>
jhass: I had some problems with them in the past. But I am really not acting like that anymore. :D
<Ox0dea>
ilhami_: Acting like what?
<ilhami_>
annoying the ops
<Papierkorb>
I see, friday nights are really popcorn time in #ruby channels. Great.
<shevy>
Papierkorb hehe
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<Ox0dea>
ilhami_: "Annoying" or being hateful toward?
<shevy>
Papierkorb weekends on the other hand are so dead quiet :(
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<ilhami_>
I am not hateful??
<Ox0dea>
ilhami_: Do you promise?
<Papierkorb>
shevy: fucking casuals
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<Ox0dea>
ilhami_: You never made "jokes" about jihad or anything of that nature?
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<ilhami_>
why would I joke about jihad?
<ilhami_>
I am a muslim... so that would not make sense.
<shevy>
ok this is getting weird
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<ilhami_>
you don't joke about your own religion dude
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<shevy>
Ox0dea is training him
<Papierkorb>
shevy: I just started steam, and it advertises two of those youtube physic sandbox games. I just got reminded of the current discussion in here. Weeeird.
<shevy>
lol
<ilhami_>
So guys you want to play CS?
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<shevy>
go learn ruby ilhami_
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<Ox0dea>
Let's play Computer Science together!
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* VeryBewitching
gets his playmat
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<ilhami_>
Hehehe Ox0dea :D
<dn5>
Is there a way to add string after second line in file?
<shevy>
a playmat?
<Ox0dea>
dn5: No, you have to do a complete write. :/
<ilhami_>
Is Ruby more powerful than PHP?
<VeryBewitching>
shevy: toddlers play on playmats
<ilhami_>
be honest to yourself.
<shevy>
dn5 sure! File.readlines, then you got an array, insert at the right position
<Papierkorb>
dn5: after the second line of the file, or after EVERY second line of the file?
<shevy>
VeryBewitching oh right. thought it was for adults there :D
<VeryBewitching>
ilhami_: I think Ruby is monstrously more expressive than PHP
<shevy>
something like "I'm gonna roll out my mahagony chess set"
<jhass>
ilhami_: powerful is vague. It's more expressive and consistent
<ilhami_>
Ok so I should use Ruby over PHP?
<dn5>
Ox0dea: I hope thats a joke ahh.. shevy: Let me check it. Papierkorb: The first one.
<ilhami_>
Is Ruby based on Lua?
<VeryBewitching>
ilhami_: You should try both
<ilhami_>
I have tried PHP
<jhass>
ilhami_: most of the time you should. No, it's not
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<VeryBewitching>
<-- former PHP developer
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<Ox0dea>
dn5: shevy and Papierkorb explained how to actually insert the line, but you'll have to write the entire file to disk to persist the insert.
<eam>
ruby is based on perl
<jhass>
conceptually
<Papierkorb>
wat
<ilhami_>
Perl is not known for being a good language though?
<VeryBewitching>
Perl is awesome.
<eam>
but admitting this is extremely contentious
<VeryBewitching>
If you like Perl.
<tomdp>
Ruby's only really a spiritual successor to perl that inherits a few things
<eam>
ilhami_: perl is known for being a HUGE success, basically the lingua franca of the internet for the 90s
<dn5>
Ox0dea: So, file.each do |line|; if line == 2 -> add_string
<VeryBewitching>
Inline regex ftw
<shevy>
perl was cool when there was less competition
<dn5>
shevy: Hey, thanks, let me try it.
<eam>
was there less competition?
<shevy>
yeah!
<VeryBewitching>
It was C or Perl
<shevy>
the pre-php days :)
<VeryBewitching>
For a long time
<eam>
VeryBewitching: or awk, rexx
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<eam>
agol
<VeryBewitching>
eam: Well, OK, I concede to that
<eam>
lisp
<Ox0dea>
eam: There are, like, five people who know about REXX.
<VeryBewitching>
LISP makes me blind
<eam>
Ox0dea: not in the early 90s!
<shevy>
(lisp(is(not(so(bad
<eam>
not my fault they're all dead now
<Ox0dea>
)))))
<Ox0dea>
Fair enough.
<Ox0dea>
VeryBewitching: It's not an acronym or an initialism.
<shevy>
Ox0dea the closing ) are just line noise
<Ox0dea>
shevy: Okay, Python guy.
<eam>
also let's not forget basic (and not the MS basic)
<Ox0dea>
QBasic > *
<VeryBewitching>
Ox0dea: Emphasis
<eam>
basic from which all of these dynamic languages borrow
<shevy>
hey... optional indent wouldn't be so bad... it's just mandatory indent that's annoying! I get that whenever i compare copy/paste between irb and the interactive python
<Papierkorb>
Hey my first programming language was QBasic! That was .. 2002 .. well .. it worked alright okay?
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<Ox0dea>
Papierkorb: Do you remember anything you made?
<shevy>
I started with BASIC too. 10 ... 20 ... goto 10 ... it actually was fun!
<VeryBewitching>
My first language was BASIC, C64
<Ox0dea>
Back in a sec; gotta figure out who's cutting onions.
<eam>
jcl
<Papierkorb>
Ox0dea: Um .. Well, barely. After QBasic, yes, most of the stuff.
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<shevy>
hmmm
<shevy>
the github follow link should be renamed to ... "stalk" :D
<VeryBewitching>
I follow no one on Github.
<ilhami_>
VeryBewitching: after this current project. :)
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<dn5>
Regarding that 2nd line append system: does each_line have line index/number function?
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<Ox0dea>
dn5: Use #each_with_index.
<dn5>
Ox0dea: That might help. That returns an index right?
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<Ox0dea>
dn5: It yields each element and its index to the block you provide.
<Ox0dea>
So you'd say `each_with_index { |line, number| ... }`.
<Ox0dea>
You might be going about it wrong, though.
<doddok>
did you hear about paris?
<ilhami_>
yes
<doddok>
100 hostages held at Le Bataclan concert hall
<dn5>
Ox0dea: Ah, I get it now. And it's possible that I'm doing it wrong. Totally new in ruby.
<ilhami_>
60 killed so far.
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<doddok>
fucked muslim became angry
<ilhami_>
how do you know it's a muslim?
<ilhami_>
prejudices again
<Ox0dea>
?ot
<ruboto>
this seems to be off-topic. Please move your discussion to #ruby-offtopic, to keep this channel free for Ruby related topics. Thanks!
<Ox0dea>
dn5: Do you want to append some text to the second line, or do you want to insert a brand-new line after it?
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<adaedra>
!kick doddok Racism
doddok was kicked from #ruby by ruboto [Racism]
<dn5>
Ox0dea: I want to append some text after 2nd line
<Ox0dea>
dn5: And write it back to the same file, or?
<dn5>
Ox0dea: Excatly!
<Ox0dea>
dn5: Okay, but as I've mentioned, you're gonna have to write back the entire file, not just the updated second line.
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<Ox0dea>
No filesystem in common use supports arbitrary appends.
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<dn5>
Ox0dea: My try > @file = File.open("file.txt"); @file.each_with_index{|item, index| if #{index} == 2 < this is where I don't have idea how to proceed with update
<shevy>
nah
<shevy>
save back after you have modified your dataset
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<dn5>
shevy: Mind if you explain a bit detailed?
<shevy>
you need to modify some line in that file
<shevy>
if it is a small file, you can use File.readlines(); then you have an array. modify that array, then save it back
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<shevy>
if you know at which line, you can manipulate directly; if you have to grep, you can use .scan or .grep, I always forget which one
<doddok>
muslims is not racism, its religion position
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<ilhami_>
doddok: you have evidence that it was a muslim? otherwise please shut up
<dn5>
shevy: The file have small amount of data. I know the line number (2) and line string so I don't worry. But Bellow the second line is more data, lets call it X. I need to put my string between second line and data-X
<havenwood>
?ot
<ruboto>
this seems to be off-topic. Please move your discussion to #ruby-offtopic, to keep this channel free for Ruby related topics. Thanks!
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<Ox0dea>
dn5: data-X will be in the Array you get from `File.readlines`.
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<shevy>
dn5 ok so it becomes simple: x = File.readlines(location); x[2,0] = 'your new string here' # or something like that, you probably have to deduct 1 because arrays start at index 0 count
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<Ox0dea>
He doesn't want to overwrite the whole line.
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<dn5>
Ox0dea: I'm trying readlines atm. Will post results. shevy: let me try that, but as Ox0dea said, I don't want to owerwrite at the 2nd line, but place string bellow (and above data-X).
<Ox0dea>
dn5: Below?
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<Ox0dea>
Please take a second to determine whether you want to append to the second line or insert another line beneath it.
<shevy>
if you insert at the right position you have that
<Ox0dea>
They are different operations.
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<shevy>
he wants to do both :)
<Ox0dea>
dn5: Be also advised that the lines you get from File.readlines will have a literal "\n" at the end.
<dn5>
Ox0dea: Excuse me for my bad english. Will it be simpler if I write a gist with example of a data?
<eam>
dn5: you want something like this? perl -ple'$_ .= "appended" if $. == 2' inputfile
<Ox0dea>
dn5: I suppose it might. Please do so, if it's not too much trouble.
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<eam>
Ox0dea: do you know if ruby kept $NR aka $.?
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<dn5>
Ox0dea: I know that.
<Ox0dea>
You should not be operating on lines.
<Ox0dea>
You should parse it and modify the resultant data structure.
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<dn5>
Ox0dea: I know. I initially wanted to do it like that. But the problem is I won't have access to the file so I can't read it. Though I have writeable access to it.
<Ox0dea>
Wat.
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<Ox0dea>
File.readlines isn't going to work if you don't have read access.
<shevy>
ok so
<Ox0dea>
You're not going to be able to append anywhere but the end of the file if you can't read it.
<shevy>
if you can not read the file
<dn5>
Ox0dea: Oh god, fuck me and my english. I don't mean access rights like that.
<shevy>
how can you grab data from it?
<dn5>
Stop guys.
<dn5>
Let me explain please
<Ox0dea>
dn5: You will not be able to justify operating on JSON as lines.
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<dn5>
Ox0dea: :/ Why is that?
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<Ox0dea>
dn5: It's a very silly thing to do.
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<nofxx>
Ox0dea: ty
<Ox0dea>
dn5: You have structured data and you want to ignore the structure; where's the sense in that, you know?
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<dn5>
Ox0dea: I agree honestly.
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<dn5>
Ox0dea: I don't know. It seems easier for me.
<dn5>
Wrong, but easier.
<Ox0dea>
dn5: You know there's a JSON standard library?
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<dn5>
Ox0dea: Yes.
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<dn5>
Ox0dea: But look why it seems easier for me like this: I won't have to use JSON lib, I don't have to parse my string to JSON (already stuffed/concat like that)
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<zenspider>
rawr
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<zenspider>
wait. what???
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<zenspider>
dn5: keyword: "SEEMS easier"... but it isn't
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<Ox0dea>
dn5: As a perfect case in point, you forgot the commas in your desired output example.
<Ox0dea>
It's just really dumb to operate on lines when you have something more than lines.
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<passcod>
Tbh, if the input is massive, it might be more efficient not to parse and stringify for a "simple" insert
<passcod>
but for every other usecase, just use json
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<dn5>
why does puts hash prints without backslash yet when I use File.write it adds backslashes to the values?
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<zenspider>
it probably doesn't. how are you testing the result of File.write vs puts?
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<shevy>
dn5 make sure that you store a string when you use File.write; a trivial way may be to use yaml + YAML.dump() (if you have a yaml format that is)
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