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  • How to generate a unified diff in Ruby?

    - by jstayton
    After reading through this question about Ruby diff packages, I'm still not sure how to generate a unified diff from two text files. I'm not having trouble reading each file into a string (IO.read()), but I'm not finding any package that can generate a unified diff. Does one exist? Is doing a system call to diff even an option I should consider? (I'm thinking no.) Any help is appreciated! Thanks.

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  • Ruby: Continue a loop after catching an exception

    - by Santa
    Basically, I want to do something like this (in Python, or similar imperative languages): for i in xrange(1, 5): try: do_something_that_might_raise_exceptions(i) except: continue # continue the loop at i = i + 1 How do I do this in Ruby? I know there are the redo and retry keywords, but they seem to re-execute the "try" block, instead of continuing the loop: for i in 1..5 begin do_something_that_might_raise_exceptions(i) rescue retry # do_something_* again, with same i end end

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  • Ruby/IRB self help

    - by mozillalives
    I'm new to Ruby - what tricks can I use to help me find documentation on a object I'm working with? Normally I just do a_var.class or a_var.methods and try to guess what I need or search the web for documentation. Are there other methods or modules that might help?

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  • Enums in Ruby

    - by auramo
    What's the best way to implement the enum idiom in Ruby? I'm looking for something which I can use (almost) like the Java/C# enums.

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  • which ruby twitter library/gem to use?

    - by Radek
    there is a list of ruby gems for twitter could anybody recommend me one that is good to start to learn/use? that have some history of development etc etc? I want to the stuff below on my linux box search for keywords and follow autofollow rewteet

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  • Ruby library for Flickr API?

    - by rubayeet
    Is there a solid, production ready library in Ruby that interacts with the Flickr API? I found a few by googing, but their states don't impress me much. I'm looking for something along the lines of flickrapi for Python, with nice documentation.

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  • Ruby Large HTML getting error, limit to header size

    - by Joe Stein
    def mailTo(subject,msg,folks) begin Net::SMTP.start('localhost', 25) do |smtp| smtp.send_message "MIME-Version: 1.0\nContent-type: text/html\nSubject: #{subject}\n#{msg}\n#{DateTime.now}\n", '[email protected]', folks end rescue => e puts "Emailing Sending Error - #{e}" end end when the HTML is VERY large I get this exception Emailing Sending Error - 552 5.6.0 Headers too large (32768 max) how can i get a larger html above max to work with Net::SMTP in Ruby

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  • ruby socket programming using credentials

    - by satya
    HI folks, I'm trying to establish connection to a remote server using ruby socket connection TcpSocket. I started with TcpSocket.new(port,host) Now, How do I pass the credentials to it. The remote server needs credentials to allow me to connect. Any help is very much appreciated. Thanks

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  • RVM Ruby 1.9.1 troubles

    - by Casper
    Trying to get Ruby 1.9.1 up and running with RVM on a fresh install(fedora). So after doing rvm install 1.9.1, the rubygems error logs show that zlib can't be located no such file to load -- zlib (LoadError) However both the zlib runtime and development libraries are installed and up-to-date, So I'm kinda stumped on this one at the moment. Any suggestions?

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  • Ruby on Rails: Accessing production database data for testing

    - by williamjones
    With Ruby on Rails, is there a way for me to dump my production database into a form that the test part of Rails can access? I'm thinking either a way to turn the production database into fixtures, or else a way to migrate data from the production database into the test database that will not get routinely cleared out by Rails. I'd like to use this data for a variety of tests, but foremost in my mind is using real data with the performance tests, so that I can get a realistic understanding of load times.

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  • Ruby on rails active-record generated SQL on Postgres

    - by jpartogi
    Dear all, Why does Ruby on rails generated more queries in the background on Postgres than MySQL? I haven't tried deploying Rails on production with Postgres yet, but I am just afraid this generated queries would affect the performance. Do you find Rails with Postgres is slower than MySQL, knowing that it produce more query on the background? Or it is relatively the same?

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  • Understanding ruby array sort

    - by user257797
    I am having a problem understanding how array.sort{|x,y| block} works exactly,hence how to use it? ruby-doc example: a = [ "d", "a", "e", "c", "b" ] a.sort #=> ["a", "b", "c", "d", "e"] a.sort {|x,y| y <=> x } #=> ["e", "d", "c", "b", "a"] thanks

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  • Why ruby has to_s and inspect?

    - by prosseek
    The p calls inspect, and puts/print calls to_s for representing its object. If I run class Graph def initialize @nodeArray = Array.new @wireArray = Array.new end def to_s # called with print / puts "Graph : #{@nodeArray.size}" end def inspect # called with p "G" end end if __FILE__ == $0 gr = Graph.new p gr print gr puts gr end I get G Graph : 0Graph : 0 Then, why does ruby has two functions do the same thing? What makes the difference between to_s and inspect? If I comment out the to_s or inspect function, I get as follows. ##

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  • Understanding Ruby class vs instance methods

    - by randombits
    I have the following code: #!/usr/bin/ruby class Person def self.speak p = self.new puts "Hello" p.chatter end private def chatter puts "Chattering" end end p = Person.new Person.speak I'd like to make chatter private, accessible only within p.. but I want p to be able to access it within the class method. Is there a better way to design this so chatter isn't available to the public, but a "factory" method like self.speak can call chatter?

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  • Parse XHTML using Ruby

    - by Anant
    Is there any way I can parse a remote html page, in Ruby, preferably using jQuery like selectors? For example, I could select all the div having a specific class, and get the content of all those elements in an array. I was trying to use Regex for this, but I think using XML parser would be better.

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  • Ruby on Rails solution for scrubbing data of WYSIWYG editor user input

    - by Jimmy
    Hey everyone, I am working on a simple blogging type ruby on rails application and I have everything working through tinyMCE for a nice WYSIWYG editor so the user can add some simple things like images/youtube videos and lists. What I am looking for is a nice solution for blacklisting certain elements to be filtered out of the data when it is displayed. So is there a solution for this available as a gem or available to download anywhere? Thanks!

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  • Blocks and Yields in Ruby

    - by Matt
    I am trying to understand blocks and yields and how they work in Ruby. How is a yield used and most of the rails applications use yields in a weird way. Can someone explain to me or show me where to go to understand them.

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