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• In which versions of ruby are external iterator speeds improved?

  - by Andrew Grimm

  According to this rubyquiz, external iterators used to be slow, but are now faster. Is this an improvement only available in YARV (the C-based implementation of ruby 1.9), or is this also available in the C-based implementation of ruby 1.8.7? Also, does enum_for rely on external iterators?

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• Is there a way to translate C code to Ruby?

  - by Forkrul Assail

  I'm sitting with massive amounts of legacy C code that needs to be converted to Ruby for a project. I've seen Ruby to C translators online, but not the other way around. Would there be a simple way to approach this particular problem?

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• Is Screen-scraping a windows application in ruby possible?

  - by Gerhard

  I want to scrape text data from a windows application to do additional processing using existing ruby code. Would it be possible to scrape the data as it is updated in the windows application using Ruby and where do I start?

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• how can I capture response from twitter.com? ( ruby + twitter gem)

  - by Radek

  how can I capture response from twitter.com? To make sure that everything went ok? I am using ruby and ruby twitter gem and the my code is basically like that oauth = Twitter::OAuth.new('consumer token', 'consumer secret') oauth.authorize_from_access('access token', 'access secret') client = Twitter::Base.new(oauth) client.update('Heeeyyyyoooo from Twitter Gem!')

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• What's the recommended way to write logs from a ruby script on Windows XP?

  - by Horace Ho

  Too bad I don't have a server but a XP to serve some scheduled ruby scripts. So, what's the recommended way (gem/plug-in?) to write logs on Windows XP from ruby scripts?

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• How to access original command-line argument string in Ruby?

  - by Bub Bradlee

  I'm trying to access the original command line argument string in Ruby (ie - not using the pre-split/separated ARGV array). Does anyone know how to do this? For example: $> ruby test.rb command "line" arguments I want to be able to tell if 'line' had quotes around it: "command \"line\" arguments" Any tips? Thanks in advance

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• Can someone explain/annotate this Ruby snippet with comments?

  - by Ronnie

  Could someone please add comments to this code? Or, alternatively, what would be the pseudocode equivalent of this Ruby code? It seems simple enough but I just don't know enough Ruby to convert this to PHP. data = Hash.new({}) mysql_results.each { |r| data[r['year']][r['week']] = r['count'] } (year_low..year_high).each do |year| (1..52).each do |week| puts "#{year} #{week} #{data[year][week]}" end end Any help whatsoever would be really appreciated. Thanks!

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• how to write to file in ruby on rail?

  - by ohana

  I need to read the data out of database and then save them in to a txt file, how can i do that in Ruby on rails? is there any file management system in ruby on rails? Thanks

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• How long will it take a coder to learn ruby?

  - by apoclast

  How long will it take for a developer to learn ruby. And develop a production website like stackoverflow ? Normally. If the developer have .NET experience but no ruby and MYSQL or PostgreSQL experience.

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• How to change verbose code in Ruby to simpler code using Metaprogramming?

  - by Jian Lin

  It is said that Ruby is a metaprogramming language. I wonder if the first 3 lines can be made less verbose using metaprogramming? RUBY_VERSION ||= "unknown version" RUBY_PATCHLEVEL ||= "unknown patchlevel" RUBY_PLATFORM ||= "unknown platform" print "Ruby ", RUBY_VERSION, " patch ", RUBY_PATCHLEVEL, " on ", RUBY_PLATFORM

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• How to change verbose code in Ruby to simpler using Metaprogramming?

  - by Jian Lin

  It is said that Ruby is a metaprogramming language. I wonder if the first 3 lines can be made less verbose using metaprogramming? RUBY_VERSION ||= "unknown version" RUBY_PATCHLEVEL ||= "unknown patchlevel" RUBY_PLATFORM ||= "unknown platform" print "Ruby ", RUBY_VERSION, " patch ", RUBY_PATCHLEVEL, " on ", RUBY_PLATFORM

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• What is a good Ruby on Rails hosting service?

  - by Owen

  I'm looking to deploy a new Ruby on Rails project I'm working on but need hosting. A managed server is overkill for me. I just need shared space. I'd like to go with a service that specializes in Ruby on Rails. I've looked at SpeedyRails and RailsPlayground and they both seem to have pros and cons. Does anyone have experience with either? Does anyone have a different recommendation?

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• How do you remove functionality from a program in ruby?

  - by Andrew Grimm

  You have some code you want to remove associated with an obsolete piece of functionality from a ruby project. How do ensure that you get rid of all of the code? Some guidelines that usually help in refactoring ruby apply, but there are added challenges because having code that isn't being called by anything won't break any unit tests.

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• x=["key" => "value"]. How does it work in Ruby?

  - by Earlz

  Ok, so I was comparing some stuff in my own DSL to Ruby. One construct they both support is this x=["key" => "value"] Knowing the difference between arrays and hashes, I would think this to be illegal, but the result in Ruby is [{"key" => "value"}] Why is this? And with this kinda syntax why can't you do x=("key" => "value") Why is an array a special case for implicitly created hashes?

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• Ruby, MySQL: Connection pool that is outside of the rails framework?

  - by Zombies

  Is there a ruby gem or such for MySQL connection pooling that isn't part of rails? I simply have a ruby script (again, I don't do anything with rails).

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• Is there a captcha solver / decoder / autofiller for Ruby?

  - by fyskij

  I want to write a "client" for megaupload.com in Ruby and I wanted to know if there was a captcha solver / decoder / autofiller for Ruby. Thanks

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• How to make OSX application that just runs opens some file type and runs arbitrary Ruby code?

  - by taw

  It's trivial to make a program executable from shell - just put #!/usr/bin/ruby on top, chmod +x it and done. Unfortunately OSX won't let me associate file type with such scripts - it requires its .apps instead. This sort of distinction doesn't seem to exist on other operating systems. What's the simplest way of making such .app, which would merely execute some arbitrary Ruby code?

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• Ruby equivalent to "grep -C 5" to get context of lines around the match?

  - by wonderfulthunk

  I've searched for this a bit but I must be using the wrong terms - does ruby have a way to grep for a string/regex and also return the surrounding 5 lines (above and below)? I know I could just call "grep -C 5 ..."or even write my own method, but it seems like something ruby would have and I'm just not using the right search terms.

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• In MVC framworks (such as Ruby on Rails), do usually Model spell as singular and controller and view

  - by Jian Lin

  I usually see Ruby on Rails books using script/generate model Story name:string link:string which is a singular Story, while when it is controller script/generate controller Stories index then the Story now is Stories, which is plural. Is this a standard on Ruby on Rails? Is it true in other MVC frameworks too, like CakePHP, Symfony, Django, or TurboGears? I see that in the book Rails Space, the controller is also called User, which is the same as the model name, and it is the only exception I see.

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• How do I execute ruby template files (ERB) without a web server from command line?

  - by ivan_ivanovich_ivanoff

  Hello! I need ERB (Ruby's templating system) for templating of non-HTML files. (Instead, I want to use it for source files such as .java, .cs, ...) How do I "execute" Ruby templates from command line?

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• Which is the best counterpart to ANTLR to create parsers in ruby?

  - by thesp0nge

  Hi there, I've used antlr and javacc/freecc for a while. Now I need to write a bunch of parsers using antlr grammars but such parsers need to be written in ruby lang. I googled but nothing found. Is there any ruby parser generator that takes antlr grammars and create a parser? If there are many, which is the best one in your opinion? TIA Paolo

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• How to configure Ruby ob Rails for XAMP server?

  - by Harish Kurup

  I have installed Ruby On Rails Application on my harddrive, and i am using XAMPP server. But i was not able to configure it to use on XAMPP server, do Ruby on Rails run on XAMPP server or need some other server like webrick or lighttpd...??

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• Ruby Dir.glob works on laptop not on desktop?

  - by Nick Faraday

  I have a ruby shell script that works perfectly on my laptop, but Dir.glob doesn't seem to work when I try and run it on my desktop. Here is the code: sFileTemplate = File.join("**", sResolutions, "**", "*."+sType) sFiles = Dir.glob(sFileTemplate) Both machines run OSX 10.5 and are running ruby -v 1.9.1. Am I calling glob wrong? Thanks

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• Do I need RubyCocoaBridge or MacRuby or both to develop in Ruby for the iPad?

  - by glanden

  I've heard both MacRuby and Ruby CocoaBridge discussed in relation to iPhone/iPad development in Ruby. Do I need one or both of these?

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• Reflection in Ruby. Instantiate an object by given class name

  - by vooD

  I came to ruby from PHP. How could i do the next thing in ruby? $className = 'ArrayObject'; $arrayObject = new $className(); Thank you for any help!

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