ruby-2.0

From the Module Module#append_features(mod) → mod => When this module is included in another, Ruby calls append_features in this module, passing it the receiving module in mod. Ruby’s default implementation is to add the constants, methods, and module variables of this module to mod if this module has not already been added to mod or one of its ancestors. Module#prepend_features(mod) → mod => When this module is prepended in another, Ruby calls prepend_features in this module, passing it the receiving module in mod. Ruby’s default implementation is to overlay the constants, methods, and module

What is the best way to get JRuby to run in 2.0 mode? For a specific script, you can use the --2.0 option: jruby --2.0 -S rails s For setting 2.0 as the default value, set JRUBY_OPTS : export JRUBY_OPTS=--2.0 You can also set the value in ~/.jrubyrc : compat.version=2.0 来源： https://stackoverflow.com/questions/15281036/how-to-run-ruby-2-0-with-jruby-1-7

I came across this ruby object_id allocation question sometime back and then read this awesome article which talks about VALUE and explains why object_id of true, nil and false the way they are. I have been toying with ruby2.0 object_id when I found the apparent change that has been made regarding object_id of true and nil. forbidden:~$ ruby -v ruby 2.0.0p0 (2013-02-24 revision 39474) [x86_64-linux] forbidden:~$ forbidden:~$ irb irb(main):001:0> true.object_id => 20 irb(main):002:0> false.object_id => 0 irb(main):003:0> nil.object_id => 8 irb(main):004:0> exit forbidden:~$ forbidden:~$ rvm use

I'm building a Ruby on Rails api using Ruby 2.0 and Rails 4.0. My app is almost solely a JSON API, so if an error occurs (500, 404), I want to capture that error and return a nicely formatted JSON error message. I've tried this and also: rescue_from ActionController::RoutingError, :with => :error_render_method def error_render_method puts "HANDLING ERROR" render :json => { :errors => "Method not found." }, :status => :not_found true end In my ApplicationController. Neither of these do the trick (the exceptions are not captured at all). My Googling shows that this changed a lot between 3.1, 3.2

I don't know Ruby but want to run an script where: D:/Heather/Ruby/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require': cannot load such file -- iconv (LoadError) it works somehow if I comment iconv code but it will be much better if I can recode this part: return Iconv.iconv('UTF-8//IGNORE', 'UTF-8', (s + ' ') ).first[0..-2] without iconv . Maybe I can use String#encode here somehow? Iconv was deprecated (removed) in 1.9.3. You can still install it. Reference Material if you unsure: https://rvm.io/packages/iconv/ However the suggestion is that you don't and rather use: string

I tried to install Ruby 2 using RVM today and it failed. I updated RVM, all my brew formulas and whatnot. This is what I get: admin:/$ rvm install ruby-2.0.0-p0 Searching for binary rubies, this might take some time. No binary rubies available for: osx/10.8/x86_64/ruby-2.0.0-p0. Continuing with compilation. Please read 'rvm mount' to get more information on binary rubies. Installing requirements for osx, might require sudo password. Already up-to-date. Certificates in '/usr/local/etc/openssl/cert.pem' already are up to date. Installing Ruby from source to: /Users/admin/.rvm/rubies/ruby-2.0.0