<ellisTAA>
so when i use the && operator i need to seperate things with parentheses?
<wallerdev>
without parentheses it could be parsed as articles.include?(x) && idx > 0 OR it could be parsed as articles.include?(x && idx > 0)
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<ellisTAA>
ahhh thank you wallerdev. learn something new everyday :)
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<ellisTAA>
thanks for everyone’s help. ill be sure to give back once i learn ruby
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<atmosx>
ellisTAA: work out this code, it's very simple https://gist.github.com/atmosx/4bc2dd0a3b94e007b008 and it works apparently as expected. Then you can start compressing by using more advanced expressions. It's what I do when I deal with problems for the first time.
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<wallerdev>
+1
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<roshanavand>
hey guys, I have a question, if interpreter reads the code line by line, so how BEGIN and END methods work?
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<Altonymous>
Hey all, I’m using the pg gem to import data into my postgres database. I wrote this method that does most of the work. However, it is extremely slow. I’m wondering if there’s an obvious way to speed it up. https://gist.github.com/304e9926eb7b941f0d2e
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<Cat_1>
Why don't you just use a CLI import function from a SQL data dump?
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<Altonymous>
because I don’t have permissions to do so
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<Altonymous>
Cat_1: Also only part of the file is imported, the first 26 columns.
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<Cat_1>
Hmmm
<Cat_1>
I see.
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<Altonymous>
Hey all, I’m using the pg gem to import data into my postgres database. I wrote this method that does most of the work. However, it is extremely slow. I’m wondering if there’s an obvious way to speed it up. https://gist.github.com/304e9926eb7b941f0d2e
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<wallerdev>
Altonymous: what part of your code is running slowly?
<Altonymous>
the import itself.
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<Altonymous>
ie put_copy_data call
<wallerdev>
you could try removing indexes which should speed up copy significantly with many rows
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<Altonymous>
There are no indexes
<wallerdev>
how much data is it
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<wallerdev>
you could try just generating the full file and then run a single copy on it
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<goleldar>
hello
<wallerdev>
hi
<goleldar>
anyone know how i can use double condition without having ruby evaluate the second argument if the first returns false
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<sevenseacat>
huh?
<goleldar>
fruit && red
<goleldar>
if its not a fruit then don't determine the color
<wallerdev>
yup just && and ||
<sevenseacat>
thats how it works by default?
<wallerdev>
yup by default it short circuits
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<goleldar>
perfecto
<goleldar>
thank you :)
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<ellisTAA>
i’m learning programming / ruby on rails. i was wondering what kind of jobs can someone like me get?? how do i go about learning what kind of jobs are out there
<sevenseacat>
i thought you were going to be the best ruby programmer ever
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<ellisTAA>
yeah that’s what ill strive towards
<ellisTAA>
but i’m also going to learn RoR
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<sevenseacat>
:)
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<ellisTAA>
by the way, matz didnt’ respond to my email
<sevenseacat>
not surprised
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<ellisTAA>
ha. hey when i email noam chomsky he gets back to me.
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<ellisTAA>
but he is an anarchist and by principle treats ppl as equals
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<sevenseacat>
i see
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<c_nick>
how to get the standard stub for a variable in a string in RubyMine
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<shellox>
how would you scrape a website with terrible css, no id or class attributes used in the html and table layout?
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<Xnfu>
You could use regexp
<shellox>
how so?
<shellox>
first i tried to use xpath
<pontiki>
hello...
<shellox>
the problem is the fields are not the same on each product page
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<shellox>
sometimes it's the first row, sometimes the last
<Xnfu>
Just use the body of the page convert it all to text and then use it like data from a file or similar.
<sevenseacat>
with great difficulty
<Xnfu>
There will be some similarities in all the products, and the data you wish to scrap
<Xnfu>
Find that and set up a regexp to extract the data
<shellox>
sevenseacat: i try to import ~5000 products from a chinese ecommerce system into shopify. sadly it was written before coding standards were cool lol
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<pontiki>
1983?
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<shellox>
sevenseacat: you usually have suggestions, how would you do it ;)?
<bradland>
if the page layout is inconsistent, the job is much harder
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<shellox>
bradland: it is :(
<bradland>
you either have to identify the variations and write your script to detect and parse accordingly, or you have to develop some smarter method of identifying the data you want
<bradland>
sometimes, it's simply impossible
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<shellox>
bradland: the content is also in chinese, so not that easy to identify ;)
<bradland>
have you closely examined the structure of many pages?
<bradland>
specifically, are you certain they are all completely different, or are there just a number of different vareities?
<shellox>
~30% are the same and i can get them with css selectors using nokogiri
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<shellox>
the rest differs and there are no id's or classes used in the text
<shellox>
it's all td's and span's
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<bradland>
ok, even without css paths, you could get there by xpath, or by navigating the node tree more or less manually
<bradland>
but are the pages at least consistent?
<bradland>
or are there sets of consistency
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<bradland>
like some pages use this layout, and some use another, but there are groups?
<bradland>
sry, that wasn't a question lol
<bradland>
not easy, but that's about all you can do
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<elfuego>
is it possible to specify a drive on windows to log to. this is what i’m using now log/production2.log I want to specify a secondary mounted drive
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<bradland>
elfuego: have you tried passing the full path?
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<bradland>
also, you haven't really specified what you're passing this path to. rails logger? log4r?
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<fodiw>
Hello, I have the following JSON hash and I would like to call a method (insert into db) for each entry (get the key, get the value and do the action). What is the best way to do it?
<shevy>
redcodefinal ruby just makes you going \o/
<shevy>
after I do a gem upload, I shuffle
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<arup_r>
shevy: someone like you came here shevycat: I thought you changed your name.. :)
<arup_r>
How to parse large XML files with Nokogiri in Rails?I would like to parse large (more than 2 GB) XML data files with Nokogiri.If I do normal DOM parsing, surely the system will crash as Nokogiri::XML(file_open).Is there any best strategy for large XML files parsing with Nokogiri?
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<shevy>
ack XML
<shevy>
in cases like that you probably need to iterate over each line
<shevy>
and keep some reference to tags open
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<shevy>
sounds like a nightmare
<arup_r>
:(
<Beoran__>
there are plenty existing XML parsers
<Beoran__>
use those unless you have a very good reason
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<pontiki>
you might get more useful answers at the Nokogiri google group if no one here knows (i sure don't)
<pontiki>
tho that page doesn't exactly inspire confidence
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<shevy>
haha
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<arup_r>
pontiki: :)
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<Rayford>
I created a gem, uploaded it to ruby gems, then did a bundle install, but i cannot require it
<Rayford>
any ideas?
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<Rayford>
(it did download during the bundle)
<sevenseacat>
you made it wrong?
<pontiki>
how did you test it?
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<Rayford>
test it?
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<pontiki>
the gem
<Rayford>
i just made a few small modifications to a gem that was already working
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<Rayford>
did a gem build
<Rayford>
thena gem push
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<shevy>
Rayford when you use gem install, it will be installed
<Rayford>
gem list shows it
<Rayford>
but still could not load it
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<pontiki>
Rayford: !code and errors
<helpa>
Rayford: We cannot help you with your problem if you don't show us your code. Please put it on http://gist.github.com and give us the URL so we can see it.
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<pontiki>
and there ye have it
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<ak>
I'm new to ruby and have built a ruby server on centos7, when I try to do a bundle install I'm seeing errors can someone help? http://ur1.ca/jhjht
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<avril14th>
ak: you have two gems that need different versions of another gem
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<avril14th>
ak: you need to update one of them to reconcile and get a version that both can use
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<ak>
ok thanks, that helps
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<The_Phoenix>
I'm looking for a free Ruby+Rails IDE. Something like Eclipse for Java+JEE. I tried Eclipse with Aptana plugin. The plugin won't install. I tried Aptana Studio. It crashes on launch. I tried RedCar but I can't get it to work with Bitnami. Komodo and RubyMine are not free. I don't expect much from an IDE other than a seamless launch/deployment. I'm looking for Linux x64.
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<certainty>
shevy: say something nice to me
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<waxjar>
The_Phoenix: most people use just a text-editor, ide support is difficult due to ruby's dynamic nature.
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<The_Phoenix>
waxjar: Is there's any kinda tool for one-click/one-command deployment?
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<The_Phoenix>
waxjar: I come from a Java/Eclipse background and I'm pretty used to all these tools. Although code completetion would be nice, I mostly want seamless deployment/debugging.
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<The_Phoenix>
waxjar: Is there's another tool which can acheive the requirement? I'm new to Ruby/Rails. So, I'm not exactly sure about tools or where to find 'em.
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<waxjar>
pry is popular for debugging, it drops you in a repl at a point you specify. deployment idk much about, mina seems nice
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<The_Phoenix>
waxjar: Thanks. Hmm.
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<rrtbram>
The_Phoenix: I have a similiar background and am new to ruby as well (about 2-3 months in)
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<rrtbram>
and have used netbeans allot in the past
<rrtbram>
my sugestion to you is to start learning ruby and use a simple editor
<shevy>
certainty still thinking about ur mom
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<certainty>
shevy: yeah she has that effect
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<atmosx>
The_Phoenix: RubyMine?
<rrtbram>
he/she wants a free IDE
<atmosx>
rrtbram: NetBeans IIRC supports ruby.
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<atmosx>
KDevelop supports ruby too, but you need to compile it manually and add support, it's not trivial and support might be not full-featured.
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<atmosx>
that said, everyone here uses tmux + vim + guard/rerun + pry/irb etc.
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<rrtbram>
atmosx: NetBeans had droped support for ruby
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<rrtbram>
it has it in a form of plugin
<rrtbram>
of sorts
<rrtbram>
tough I moved on to vim
<rrtbram>
for better or worse :)
<rrtbram>
interesting learing curve
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<rrtbram>
am yet to try out tmux as well
<atmosx>
rrtbram: do you use macros in vim?
<atmosx>
I see.
<rrtbram>
no not really
<rrtbram>
I started using it aroudn a 2 weeks ago
<atmosx>
rrtbram: can you copy and paste easily? :-)
<atmosx>
I see
<rrtbram>
yeah :)
<rrtbram>
I enable that
<atmosx>
cool :-)
<rrtbram>
I enables that
<rrtbram>
the bigest problem to over come is not to start typing
<rrtbram>
bofre i press i,o, a etc
<atmosx>
a
<rrtbram>
and of course hjkl stuff
<atmosx>
I see, change between insert/edit mode
<rrtbram>
yeah and the swap for : and ; helped
<rrtbram>
allot
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<atmosx>
hahaha
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<rrtbram>
I try to take from other peoples .vimrc but not everything since most of it I don't know what it is for
<rrtbram>
but I managed to create my own colorsheme base upon molokai and some other
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<atmosx>
rrtbram: yeah vim is a world by itself
<rrtbram>
yeah
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<rrtbram>
it is one of those times where procrastinaton from the project at hand was a good ide
<rrtbram>
one thing kinda leads to another, i later switched to zsh as well
<atmosx>
you're growing a bear too? :-)
<rrtbram>
ahaha
<rrtbram>
well sort of had it before :P
<atmosx>
I take it you're into linux :-)
<rrtbram>
the main problem now is that there is so much of everything everywhere that I can't but feel overwhelmed
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<atmosx>
rrtbram: yeah tell me about it...
<rrtbram>
switched to ubuntu about 2-3 months ago
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<rrtbram>
since it had rvm etc
<atmosx>
rrtbram: cool, rvm rocks yeah
<rrtbram>
and noticed that pretty muich every dev for ruby is into linux and max
<rrtbram>
*mac
<atmosx>
yeap
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<rrtbram>
I plunged almost head first into rails
<atmosx>
Windows is a rather hostile platform
<atmosx>
without prior ruby knowledge?
<rrtbram>
mostly
<rrtbram>
and I kinda did fine
<rrtbram>
I mean i have some previos codeigniter knowledge
<rrtbram>
and ruby is kind logical most of the time
<rrtbram>
and rails is so specialzed that you pretty much at the n00b level don't even need that much ruby knowledge
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<atmosx>
Everytime I try to read about rails I get so bored, I've got a book and gone through half-way. However a managed to create a couple of projects using rails, it's easy becuase I've done sone sinatra apps using MVC and now I'm used to most of it.
<rrtbram>
how ever, I could not shake the feeling that I am missing out ALLOT
<atmosx>
rrtbram: yes it comes with too many convetions that's true.
<rrtbram>
so I "dialed back" to ruby
<rrtbram>
and decided to learn ruby the properly
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<atmosx>
cool
<atmosx>
I'm strill trying to figure out when should I use blocks in my code.
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<atmosx>
I don't seem to be able to wrap my hear around them
<rrtbram>
yeah that one takes time
<atmosx>
not understand them, that's easy okay... but actually find use cases.
<rrtbram>
you mush look at allot of code from the repositories
<rrtbram>
it ends up being really convnient if anything
<rrtbram>
I mean I am yet to really accept them and think in terms of them but I am getting there
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<atmosx>
cool
<rrtbram>
the probem right now for me is the models vs inheritance and when use
<rrtbram>
them
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<rrtbram>
since I used java mostly I mostly think in terms of inheritance
<rrtbram>
and lack the flexiblity
<Xnfu>
:/
<rrtbram>
:\
<atmosx>
you mean modules?
<rrtbram>
yeah modules
<atmosx>
not modules
<atmosx>
err models
<atmosx>
oh okay
<rrtbram>
srry
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<rrtbram>
also since in ruby (as far as I know) there are no abstraction classes I kinda feel lost
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<Xnfu>
Remind me to never again run a list on this server
<atmosx>
rrtbram: that's confusing becuase everone uses modules in a omnipresent way. I mean things that should be done with a class most people (even advanced devs) do it with moduels... becuase in ruby modules act like classes. In theory they should be used to avoid name colisions, monkey_patching, etc.
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<atmosx>
but now even I use them more than classes...
<rrtbram>
hmm makes sence
<rrtbram>
not to mention that you can pretty much stick them everywhere
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<atmosx>
exactly
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<rrtbram>
also both testing and documentation is not something I have used much before
<atmosx>
testing is another pain.
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<rrtbram>
and since rspec looks like entier new language I decided to skick with minitest for now
<rrtbram>
and yard for doc
<atmosx>
I need to read theory on testing... Most of the times I don't know what to test. I don't mean a specific output, I'm talking in a more abstract way.
<rrtbram>
which is actually easier than it seemed at first
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<rrtbram>
hmm
<rrtbram>
yeah I have problems with TDD as well
<atmosx>
TDD sucks, kills my productivity totally.
<atmosx>
I write test afterwards (ssh don't tell anybody)
<rrtbram>
since I think it terms of code or pictures
<rrtbram>
I mostly write tome class skeleton
<rrtbram>
and methods
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<rrtbram>
the moment I have some idea about stuuf I go to unit tests
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<rrtbram>
I am yet to learn proper integration testing
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<rrtbram>
but honestly both tests and documentation really helps when designing methods
<atmosx>
I need a lot more practice on testing
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<rrtbram>
although since I am new at this all it is PAINFULY SLOW
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<rrtbram>
add learing git and vim
<rrtbram>
learing good practice with commits, etc
<atmosx>
heeh well, don't worry
<atmosx>
it will all come around I guess
<rrtbram>
I hope :)
<rrtbram>
I really like the whole ruby thing
<rrtbram>
the community etc
<atmosx>
yes it's a nice community
<rrtbram>
and would actually want to be a ruby/rails dev
<rrtbram>
it is not thatr I don't like java or c#
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<rrtbram>
but even if this feels much harder overal
<rrtbram>
I like this better
<gregf_>
atmosx: TDD is good if you start with the test ;)
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<rrtbram>
I noticed that if I am doing something I know starting with test is easy
<rrtbram>
but if I am creating some new app
<rrtbram>
then it is a problem
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<rrtbram>
for new rails app is easy since development always follows almost the same rouad
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<gregf_>
rrtbram: well imho, TDD helps one write robust code. in addition if anything changes in the application which affects some part of the code then the tests failure helps find the fix :)
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<hanmac1>
the only rails i use are in simutrans ;P
<rrtbram>
gregf_: I agree wholy
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<rrtbram>
and as soon as I can write tests in a new app I do
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<rrtbram>
generaly the better you are in ruby (I guess) the easier you find to write test first, same goes for experience
<rrtbram>
but when you are just starting it is hard
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<The_Phoenix>
rrtbram: Thanks. Will keep that in mind.
<The_Phoenix>
atmosx: RubyMine is paid. I seem interested in NetBeans but they seem to have dropped support.
<The_Phoenix>
atmosx: I haven't read any books on rails yet. Following Rails Guide but instead of doing their exercises. I fixed my mind on a webapp am personally interested in. Problem oriented learning is the best approach to learn programming imo.
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<The_Phoenix>
I honestly don't understand why Aptana won't launch properly. It's a packaged application.
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<dANOKELOFF>
Hi, I have two array , the first is a = [nil , 8 , 17 , nil ] and the second is b = [nil, nil, 4, nil ] and I want the result is c = [nil , 8 , nil , nil ]. I think I need to use XOR but I dont know how use it, if anyone can help me
<canton7>
ok, so "if a nil exists in one, take the other. if both are set, take nil"?
<dANOKELOFF>
yes
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<canton7>
a.zip(b).map{ |x,y| x.nil? == y.nil? ? nil : x || y }
<dANOKELOFF>
thank's man
<canton7>
make sure you understand how it works :P
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<dANOKELOFF>
yes , but at the beginning I search an operator like a && b
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<kl___>
if you use a certain kind of logger in your application
<kl___>
do you tend to dependency inject it through your entire application?
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<canton7>
a logger is one thing I never DI
<kl___>
canton7: interesting, why should that be the exception?
<canton7>
a logger is really an implementation detail. if you're relying on some IoC framework to inject the correct logger into every class, you've stopped yourself from ever instantiating those classes yourself
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<canton7>
the class doesn't "need" the logger in order to function. you could remove all logging and it would be fine. logging isn't part of the architecture - it's an add-on to provide debug output. the logging should not feature in your architecture at all
<kl___>
canton7: that makes sense.
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<kl___>
canton7: what was that about stopping yourself from ever instantiating things yourself?
<kl___>
a consequence of DI itself, you mean?
<canton7>
that pain comes from C# w/ IoC frameworks - whether you see the same pain in ruby depends on whether you're using an IoC framework - and most ruby guys don't
<kl___>
canton7: I use Dim (by Jim Weirich)
<canton7>
but one approach to logging is to get the IoC container to inject a logger instance into all classes that are instantiated by that container. so the container will call some funky stuff to get the correct logger instance to pass in
<canton7>
how, if you want to create an instance of that class yourself, without the IoC container, you *should* be able to: just pass in all of its dependencies yourself. if one of those dependencies is a specially taylored and instantiated logger, you're probably not going to be able to create that yourself
<canton7>
and you're not going to be able to have it injected into you - you'll have *your* logger injected into you, but not someone else's
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<kl___>
canton7: ..perhaps an include MyLogger would just be sufficient
<canton7>
how do you mean?
<kl___>
well
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<kl___>
class MyClass; include MyLogger; end;
<canton7>
sure
<canton7>
the C# way is to get a logger instance from a static factory
<canton7>
...that logger is taylored to the class requesting it, e.g. provides the class name in its output
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<maasha>
hi
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<maasha>
In unit testing is there a good way to omit all tests if say a specific executable version called with `` is not available?
<maasha>
I can do omit_if() in each test, but that is not DRY
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<shay->
Hi, I have a small ruby program which is called several time to validate some user input. It requires some libraries, which take ages to load. Is there a possiblity to load it only once and then hold it in memory or soemthing?
<wm3|away>
maasha: very dependent on your test framework
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<avril14th>
shay-: why not keeping the ruby program running?
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<shay->
avril14th: it is executed with the start parameters which tell it what to validate, sure it can be adjusted but I look for a fast way to improve that
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<workmad3>
shay-: there isn't a fast way... you need to adjust the interaction with the program somehow
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<waxjar>
or look for lighter libraries
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<workmad3>
shay-: such as not shelling out to the script and instead exposing it as a library itself that you can load into a larger ruby program, and simply call methods when necessary... or by creating a long-running daemon for the validation part and the command-line client communicates with that (and starts it if it's not running)
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<workmad3>
shay-: or as waxjar says, use libraries that don't take so long to load
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<hanmac1>
shay-: or check if you really need all of the stuff you do require ... Other Question, do you use Rails for that?
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<shay->
hammac1: nope no rails. I will adjust it to run as daemon i thnk
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<hanmac1>
shay- if you might do a gist of your stuff we might check what else you might do to make it better
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<maasha>
I am getting a failing test on a new laptop: <"{:SEQ=>\"atcgatcgatcgatcgatcgatcgatcgtacgacgtagct\"}{:SEQ=>\"gtgtgtagctacgatcagctagcgatcgagctatatgttt\"}{:TYPE=>\"H\", :CLUSTER=>0, :SEQ_LEN=>40, :IDENT=>100.0, :STRAND=>\"+\", :CIGAR=>\"40M\", :Q_ID=>\"1\", :S_ID=>\"test1\", :RECORD_TYPE=>\"usearch\"}{:TYPE=>\"N\", :CLUSTER=>0, :SEQ_LEN=>0, :STRAND=>\".\", :CIGAR=>\"*\", :Q_ID=>\"2\", :RECORD_TYPE=>\"usearch\"}{:one=>1, :two=>2, :three=>3
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<maasha>
the encoding is strange? UTF-8 vs US-ASCII. I never touched encoding.
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<maasha>
(and a bit of my paste has gone missing, the last part read: ... :three=>3}">(US-ASCII) )
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<sevenseacat>
IRC does have character limits for messages. we don't like walls of text.
<maasha>
sevenseacat: sure
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<Timgauthier>
maasha you can gist gist.github.com
<sevenseacat>
if you want help with a test failure, you should start with gisting the test and the error.
<Timgauthier>
or pastie.org
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<maasha>
Timgauthier: I know. it was a limited paste though.
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<Timgauthier>
*shrug* i put em all in gists because it is way easier for people to read then a string of text
<canton7>
personally I'd ratehr see that nicely formatted in a pastie
<Timgauthier>
do you have all the same gems (and versions) on your new machine, are you running the same version of ruby
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<maasha>
I suspect LANG env
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<maasha>
LC_CTYPE=UTF-8
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<sevenseacat>
looks like nothing to do with the encoding
<sevenseacat>
the data is different
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<sevenseacat>
i mean, a H doesnt turn into an N because of encoding
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<maasha>
Hm, I hate locale settings
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<axilla>
hi all, i'm working on a recursive function to take a response from an API and convert it to a dynatree formated json data. I'm a bit stumped with adding the children to the array once the parent has already been added.. the api returns the object id and its parents id so i can relate them that way.. can someone point me in the right direction.
<axilla>
i have a working example that goes 1 level deep, to show desired format, but i need to go more than 1 level deep.
<axilla>
i want to continue until there are no more folders.
<canton7>
got an example of the data?
<canton7>
boil it down to some sample input that we can use to play with
<axilla>
yea one second
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<axilla>
added some sample data to the gist, refresh
<canton7>
and desired output?
<canton7>
that sample input just has 1 folder - did you mean to add more? or is that not how it works?
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<certainty>
sevenseacat: though an H is very close to an N the bar in the middle has just been rotated closwise around he an imaginary center
<certainty>
clockwise, even
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<axilla>
that's the data available about any given folder.. its going to be exactly the same not sure what more you'd need.
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<canton7>
something I can paste into irb and work directly with would be nice
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<canton7>
it can be cut down - it only needs to contain the relevant stuff. but it saves anyone who wants to help from having to type up a load of dummy data themselves
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<jcutrell>
ails
<jcutrell>
Ah.
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<jcutrell>
Sorry folks. Accidental window.
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<hs366>
what is << in ruby ?
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<tobiasvl>
a method
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<hs366>
i have it in my code: result = a.each_pair {|k,v| a << "#{k} = #{v}"}
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<tobiasvl>
hs366: what kind of object is a?
<tobiasvl>
what << does depends entirely on the object
<hs366>
its a hash
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<tobiasvl>
is it really?
<leonshalimov>
itll append it
<canton7>
are you *sure*?
<leonshalimov>
"usually"
<tobiasvl>
and you're trying to put a string into that hash?
<tobiasvl>
Hash doesn't have << iirc
<canton7>
and are you sure 'a' appears both inside and outside that block?
<tobiasvl>
so that seems weird
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<canton7>
no, it doesn't
<canton7>
and it wouldn't make sense to add that string anyway :P
<hs366>
like a = {"ab" => "11", "bc" =>"22",....}
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<canton7>
that'll still result in a NoMethodError
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<canton7>
...unless someone's added the << method themselves
<tobiasvl>
of course, it could be monkey-patched in
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<tobiasvl>
hs366: that line works? it doesn't throw a NoMethodError?
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<hs366>
in irb it works but in my code not working
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<canton7>
well in my irb it throws a NoMethodError
<canton7>
so something wrong with your irb, or something
<canton7>
what ruby version?
<hs366>
let me paistbin
<tobiasvl>
yes please
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<hs366>
tobiasvl, pastebin.com/TzxZqtPd
<hs366>
thx
<hs366>
the irb works with this example
<shevy>
and what does not work
<hs366>
i just want to know what is <<
<canton7>
hs366, in that example, s is a string
<shevy>
on a string? append. on an array? append
<canton7>
not a hash
<canton7>
so look at the ruby-doc page for String, and see what #<< does
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<hs366>
so it's append and concatenate the string
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<canton7>
it mutates the string, yes
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<hs366>
so smart !
<shevy>
it appends
<shevy>
object_id remains the same
<shevy>
hs366 in C++ they also use the <<
<shevy>
cout << "hello world" << endl;
<hs366>
canton7, shevy tobiasvl thx for help!!! :)
<hs366>
ooh yess..!!
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<cout>
shevy: I've often wondered whether matz borrowed that from C++ or from some other language
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<axilla>
thx canton
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<shevy>
not sure
<shevy>
I was not there in ruby 1.0
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<shevy>
do you guys often use the hash foo: :bar syntax ?
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<mozzarella>
yes
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<terrellt>
I don't, but I'm rare around here in that I hate 1.9 hash syntax.
<shevy>
yea I disliked it too
<shevy>
but
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<shevy>
there is one advantage it has
<shevy>
it saves characters!
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<otertore>
i wish it wasn't limited to symbols
<shevy>
I have been using it for generating html elements with optional entries such as
<otertore>
{'string': 1}
<shevy>
div('blue', id: 'main')
<shevy>
div('blue', :id => 'main')
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<shevy>
the second one is more consistent in my opinion but the first one simply is shorter
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<terrellt>
1.9 syntax saves like two characters and has reduced functionality.
<terrellt>
So meh.
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<shevy>
if you repeat that a lot then that counts!
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<jcutrell>
Hey folks! I’d love to run a ruby script and put the output in my menu bar on mac os x. quite simple in practice - anyone know a simple way to achieve this?
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<xxneolithicxx>
they let you customize mac os x?
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<wasamasa>
only after jumping through a menagerie of burning hoops
<shevy>
hmm how to identify a http link? I guess there are only two possibilities or? http:// and https://
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<wasamasa>
shevy: there's also the stuff following the protocol specifier
<wasamasa>
shevy: don't you dare forgetting that, how else will you want whether it's valid and where the link ends
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<shevy>
oh I will generously assume that it is always valid
<wasamasa>
and that links are space-separated?
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<havenwood>
jcutrell: macruby ships with os x, you can try it out in macirb.
<shevy>
but this is text that will be dumped onto the console; I am wondering which ones to re-write into a clickable link (if that works... I think in gnome-terminal it would)
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<shevy>
I want to do something like "cat links.txt" and then "rf 2" to open the second link that was dumped like that
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<jcutrell>
havenwood: is that just `macirb` ?
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<havenwood>
jcutrell: yup, that'll start the REPL, like `irb`
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<jcutrell>
Hrm.
<jcutrell>
Getting command not found.
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<havenwood>
Are they not installing it by default anymore? http://macruby.org/
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<havenwood>
jcutrell: The MacRuby lead at Apple went on to RubyMotion, which carries it forward: http://www.rubymotion.com/
<havenwood>
jcutrell: Instead of MacRuby/RubyMotion, Apple went with Swift. Though a lot of folk still prefer RubyMotion.
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<jcutrell>
:/ Okay. I bought RubyMotion, and apparently my purchase has “expired”, so now I have to buy it again. Trying to avoid the complainer sound,
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<havenwood>
jcutrell: Do the 30 day trial I suppose. I don't have it.
<havenwood>
jcutrell: As far as I know, MacRuby should work well. And it's free.
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<jcutrell>
Alrighty.
<jcutrell>
I’ll look into that.
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<chattsm>
Are there any alternatives to looping through an Array other than `.drop(1).each`?
<havenwood>
chattsm: There are multiple ways to iterate over an Array. Why are you dropping the first element of the Array? What do you want another way for?
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<chattsm>
havenwood: I just need to loop through an array of elements after the first element, just wondered if there were any alternatives to using `drop(1)` as a curiosity more than anything.
<havenwood>
chattsm: Aha, gotcha. I was just confused with the first question.
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<havenwood>
chattsm: That's a fine way. You can also: array[1..-1].each
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<ellisTAA>
i want to create a method called seconds that returns a time of 00:00:00 << they only thing i can think of is Time.new … anyone know another way to get the result of 00:00:00 that doesn’t base it off of the year?
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<shevy>
wat
<shevy>
it always returns 00:00:00 ?
<shevy>
def seconds; '00:00:00'; end
<shevy>
there you go!
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<shevy>
I guess you want to convert it into a time object
<frek818>
I’m new to ruby but not new to programming. Can someone explain what’s going on here. Specifically, I’m curious about what’s going on with the ‘&:present?’ part. What is the significane of adding an amperstand to a ‘token’.
<waxjar>
it's some syntax sugar for { |o| o.present? }, google for "ruby symbol to proc"
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<waxjar>
basically it calls #to_proc on :present, which returns a proc equivalent to proc { |receiver| receiver.send(self) }, where self is the symbol, and passes that as a block
<Mon_Ouie>
Again, that doesn't work with complex numbers — it doesn't square, it multiplies by the complex conjugate to compute the square of the absolute value
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<wallerdev>
the implementation of abs2 is just x * x
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<Mon_Ouie>
That's the special case for real numbers
<wallerdev>
no its the actual implementation
<wallerdev>
lol
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<Mon_Ouie>
No, it's implementation for classes that are used to represent real numbers…
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<wallerdev>
okay maybe im missing something :)
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<wallerdev>
what's an example where it's different?
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<rpag>
that'll work for a query string, i guess thats what you meant.
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<ellisTAA>
does ruby have a method for modular arithmetic?
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<centrx>
ellisTAA, yes, probably % and/or mod
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<ellisTAA>
can’t find it using a google search
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<william3>
Hi guys
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<william3>
Anyone know of an efficient way to sort large files with ruby?
<william3>
Gems, etc
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<gr1zzlybe4r>
why would I be getting an argument error when trying to construct an object who's initialize method has no intake arguments?
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<ellisTAA>
how do i define the modulus?
<gr1zzlybe4r>
i'm trying to use irb
<william3>
@gr1zzlybe4r are you instantiating the object with the wrong name?
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<william3>
or is there a difference between the filename and the class?
<elfuego>
rpag: I’m new to ruby, but essentially what I need is to pass e.g. {:name => ‘hey’, :age => ’23’} to a method to convert it to a query string
<havenwood>
william3: How do you want to sort the files?
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<gr1zzlybe4r>
I don't think so. My class is named LinkedList and I'm calling LinkedList.new
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<havenwood>
gr1zzlybe4r: Show the code?
<gr1zzlybe4r>
there is a difference between the file name nad the class
<william3>
@havenwood I've been using the linux sort cli atm and it's having some unexpected behaviour
<william3>
what I want
<gr1zzlybe4r>
should i change that and then try again?
<ellisTAA>
i’ve got to create a class called Timer that has a method called time_string that returns a value that is modular arithmetic. can anyone offer advice on what i can do: https://gist.github.com/ellisTAA/fe312d84b9d2b4467b27
<gr1zzlybe4r>
has anyone looked at that paste pin? still confused as to what's going on
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<william3>
gr1zzlybe4r I am just looking at it now
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<amdbcg>
hello
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<gr1zzlybe4r>
kk i'm gonna see if there's a little mistake in there too
<atmosx>
gr1zzlybe4r: it's "initialize" not "initilize"
<atmosx>
gr1zzlybe4r: in node.r
<atmosx>
b
<CountTwo_>
I'm writing ruby c extensions, and would like to store a ruby object in a (c) static variable. Obviously the conservative GC won't pick it up though if I just store it directly. So how do I accomplish this?
<gr1zzlybe4r>
o wow
<gr1zzlybe4r>
>.<
<havenwood>
i wonder how many thousands of hours naming it 'init' would have saved? :P
<atmosx>
gr1zzlybe4r: well... don't worry. Vim found out, I rarelly write initialize myself, it's defi-<tab> ctrl+j...
<amdbcg>
Can't connect to local MySQL server through socket '/tmp/mysql.sock'
<amdbcg>
mysql2 ^
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<atmosx>
amdbcg: what OS?
<amdbcg>
does this have to be a local database? mac os
<gr1zzlybe4r>
i actually still have an argument error
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<scpike>
Has anyone hacked delayed_job to fork before each job execution (resque does this)?
<atmosx>
amdbcg: how did you install the mysql?
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<amdbcg>
mamp
<amdbcg>
atmosx: ^
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<gr1zzlybe4r>
got it. something left over from not changing my code after adding an attr_accessor
<gr1zzlybe4r>
thanks for the help.
<atmosx>
amdbcg: try -> sudo lsof |grep -i sock|grep mysql
<atmosx>
gr1zzlybe4r: in the 2nd file you have also attr_accessor
<amdbcg>
what if my db was on an outside server? would I still need the socket?
<atmosx>
I'm not sure you need that one there, might as well use attr_reader but I'm not 100% sure what you're be doing there
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<atmosx>
amdbcg: there are 2 wyas to connect on a UNIX system through a network connection or through a socket
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<_2_Libster>
okay do not know what your saying
<atmosx>
amdbcg: your mysql might be listening to 127.0.0.1
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<amdbcg>
atmosx: the socket works.
<amdbcg>
yay
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<_2_Libster>
how are you mate?
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<atmosx>
amdbcg: oh you pasted the socket, I saw that now... okay cool :-)
<_2_Libster>
:D
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<amdbcg>
atmosx: so I guess if I'm connecting to a db outside my localhost I just ... uh... cross that bridge when I get there :) ?
<_2_Libster>
Ajfhfhfjfhfh
<_2_Libster>
okay cool
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<_2_Libster>
:D
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<atmosx>
amdbcg: why would you wanna connect to an outside database? :-)
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<claw_>
hey there i want xml rpc to do ssl cert validation
<claw_>
cant find anything in the doc
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<claw_>
anybody has experience with that ?
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<claw_>
oh sorry i am talking about the server
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<claw_>
nevermind finally found it somewhere
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<rapha>
hi!
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<jhass>
hi
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<momomomomo>
hi
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<rapha>
How can I evaluate a string like mystring='#{somevar}' to that variable's content but leave it alone if it's mystring='normaltextonly' instead?
<rapha>
(Ideally not throwing an error should somevar be nil)
<helpa>
rapha: We cannot help you with your problem if you don't show us your code. Please put it on http://gist.github.com and give us the URL so we can see it.
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<rapha>
huh?
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<rapha>
helpa: but I did show you code...
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<gr33n7007h>
rapha, helpa is a bot :)
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<wallerdev>
seemed like he gave all the details to me
<momomomomo>
that’s an ugly way to do it
<momomomomo>
wallerdev there’s no attempt shown on how to resolve it
<momomomomo>
you could map instead
<wallerdev>
sometimes you dont know where to start haha
<momomomomo>
which would be cleaner
<momomomomo>
wallerdev: that’s when you try things
<jhass>
wallerdev: thrilled for your answer, I have no clue what it is about
<momomomomo>
jhass: my resolution above, or a map would do fine
<wallerdev>
it sounds like he has a literal string with #{} in it and wants to interpolate if that exists in the string
<momomomomo>
nope waller
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<momomomomo>
if it’s some text, leave it alone
<momomomomo>
else set it to some variable value
<wallerdev>
alright
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* gr33n7007h
ducks just in case
<jhass>
rapha: you see, at least two people have different interpretations about what your question actually is, try to rephrase it, or yet better describe your goal, not the solution you think you need ;)
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<upsideofdown>
Curious if there is a way to set a site-wide sources location? Kind of like how you mange individual users' .gemrc sources location?
<rapha>
jhass: okay, i'm sorry, i didn't mean to cause confusion
<upsideofdown>
I feel like I have a pretty elementary question. Would be helpful if I could figure out how to set a default system-wide gem sources location. I'm trying to get puppet to install some gems but the puppet user (which doesn't own a /home directory) is using rubygems.org. I can't seem to find where to change this outside of setting a /home dir for the puppet user, which I don't think it would use anywa
<upsideofdown>
y...
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<momomomomo>
>> a = (0x18 << 3); a |= 1.to_s(2)
<eval-in_>
momomomomo => String can't be coerced into Fixnum (TypeError) ... (https://eval.in/246257)
<momomomomo>
>> >> a = (0x18 << 3); (a |= 1).to_s(2)
<rapha>
jhass: well, wallerdev sort of got what i want. the problem with it being dangerous is sort of okay-ish. the bigger problem is that if "bar" does not exist as a variable, then his code will spit out an error.
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<jhass>
rapha: what's making my solution unacceptable?
<rapha>
jhass: i think i need to play around more with your named formatting codes. that might work somehow.
<momomomomo>
upsideofdown: is this a question regarding puppet?
<rapha>
jhass: sorry, too slow of a typer...
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<upsideofdown>
no, it's a ruby question. I guess in other words, can I set a system-wide default for the gem sources location. For instance, if I add a new user to the system, can I dictate their gem sources locaiton in the absence of a /home/USER/.gemrc configuration?
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<upsideofdown>
can I set this in /etc/gemrc or something like that
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<upsideofdown>
by default all users without a .gemrc file in their homedir are directed to rubygems.org with they try to install a gem.
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<upsideofdown>
alright, guess it is that hard...
<upsideofdown>
seems kind of silly to make an install repo so difficult to manage.
<upsideofdown>
thanks anyway guys 'n gals
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<CocoStorm>
Hey guys
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<rapha>
jhass: got it the way i want now. thank you!!
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<gr33n7007h>
rapha, how did you do it?
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<CocoStorm>
I need to clone a Ruby project.. I've made a heroku account and installed git.. i'm doing git clone https://git.heroku.com/myproject.git and it asks me for my username/password. I'm using the same email address/password for heroku account but authentication fails?
<CocoStorm>
does anyone know why this is?
<rapha>
gr33n7007h: i used a generic named format specified ("%{custom_variable}"). if it's not in the string, nothing bad happens, and if it's in the string, i can just put anything i like into it.
<ddv>
it's not accepting your key for some reason, or you didn't add your key to heroku
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<jhass>
CocoStorm: iirc there's a #heroku channel
<gr33n7007h>
rapha, good man :)
<CocoStorm>
ddv: what's a key?
<CocoStorm>
wait what why do I need a key
<ddv>
ssh pub key, CocoStorm
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<rapha>
gr33n7007h :)
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<CocoStorm>
ddv: what do you mean?
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<ddv>
oh sorry I now see the https
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<jwilson>
What are suggested actions for making ruby start faster on windows? I'm running v2.0.0p451 packaged with Chef, and it's super slow.
<upsideofdown>
Hey everyone, I figured out how to set the site-wide default for gem sources. Set a file /etc/gemrc with the content you require there. Thanks for nothing you guys. Perl rulz :-p
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<CocoStorm>
so it says enter password for myemail@address.com@git.heroku.com <- does that look right?
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<ddv>
CocoStorm, ask in #heroku
<Fire-Dragon-DoL>
are there any way to write in 2 separated files the stuff that a class contains for instance and in another the stuff that a class contains for class itself? (class methods)
<CocoStorm>
nobody is answering
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<Fire-Dragon-DoL>
jwilson: use it in a VM, or use it on linux
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<Fire-Dragon-DoL>
jwilson: believe me, I worked for a while with windows, there is no way to make it faster
<Fire-Dragon-DoL>
jwilson: you can try with JRuby, but from my understanding, it's an issue with filesystem (ntfs) and `stat` command being slow
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<Fire-Dragon-DoL>
mhhh basically a class in ruby
<Fire-Dragon-DoL>
is a singleton factory
<Fire-Dragon-DoL>
:O
<jwilson>
Fire-Dragon-DoL: I was afraid that would be the case.
<Fire-Dragon-DoL>
jwilson: I really worked a lot with ruby under windows (I'm talking about months)
<Fire-Dragon-DoL>
couldn't find ANY way to make it faster
<Fire-Dragon-DoL>
it's fun how in a VM
<Fire-Dragon-DoL>
it was actually faster
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<jwilson>
yes that is interesting. Guess I'll have to look into setting up a chef dev VM for myself.
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<Fire-Dragon-DoL>
I have no idea what chef is, except for someone that cooks
<Fire-Dragon-DoL>
I used vmware player
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<Fire-Dragon-DoL>
o.s. run fine, it has some minor performance penalities tough
<vandemar>
chef is a config management system, like puppet, in the same problem space as cfengine, salt, etc
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<Fire-Dragon-DoL>
at that point, I started using linux-on-usb: Bought an SSD, put it on usb3
<Fire-Dragon-DoL>
and I run native from there
<jwilson>
I'm pretty familiar with VMs - was just hoping there was another way.
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<Fire-Dragon-DoL>
vandemar: lol,oh ok
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<Fire-Dragon-DoL>
jwilson: yeah I was just telling my experience in a chance you have a better VM for me to try :P
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<jwilson>
Fire-Dragon-DoL: haha I will let you know if I find anything.
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