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ert

(ert-deftest foo ()
  (assert nil))

Now: M-x ert RET foo RET

apropos

Emacs makes discovery easier.

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require 'json'
require 'date'

# Embedders

def scalar
  lambda { |x| x }
end

def date

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source 'https://rubygems.org'

gem 'rails', '3.2.3'
# ...

platforms :jruby do
  gem 'trinidad', '~> 1.3', :require => false
  gem 'jruby-rack', '1.1.1', :require => false # trinidad dep
  gem 'trinidad_logging_extension', :require => false
end

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group :assets do
  #gem 'sass-rails',   '~> 3.1.4'
  #gem 'coffee-rails', '~> 3.1.1'
  #gem 'uglifier', '>= 1.0.3'
  
  gem 'less', :git => 'git://github.com/kares/less.rb.git', :submodules => true
  gem 'less-rails', '>= 2.2.1'
  gem 'less-rails-bootstrap' # optional
  
  gem 'therubyracer', :platforms => :ruby

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# Please add the following lines after Bundler.require
# and before "class Application < Rails::Application"
# in your config/application.rb
#
# Notice this is just an experiment, don't leave those
# lines there after the experiment. Then please benchmark
# your app boot time in development before and after adding
# those lines. A simple benchmark is:
#
#   time script/rails runner "MODEL"

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:~$ rvm use jruby

Using /home/saito/.rvm/gems/jruby-1.6.2

:~$ gem i mvn:org.slf4j:slf4j-simple

Successfully installed mvn:org.slf4j:slf4j-api-1.6.2-java

Successfully installed mvn:org.slf4j:slf4j-simple-1.6.2-java

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# minimal rails3 app

require 'action_controller'

Router = ActionDispatch::Routing::RouteSet.new
Router.draw do
  root :to => 'site#index'
end

class SiteController < ActionController::Metal

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;; Add this to ~/.emacs

;; Missing from ruby-mode.el, see https://groups.google.com/group/emacs-on-rails/msg/565fba8263233c28
(defun ruby-insert-end () 
  "Insert \"end\" at point and reindent current line." 
  (interactive) 
  (insert "end") 
  (ruby-indent-line t) 
  (end-of-line)) 

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# autoload concerns
module YourApp
  class Application < Rails::Application
    config.autoload_paths += %W(
      #{config.root}/app/controllers/concerns
      #{config.root}/app/models/concerns
    )
  end
end

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# autoload concerns
module YourApp
  class Application < Rails::Application
    config.autoload_paths += %W(
      #{config.root}/app/controllers/concerns
      #{config.root}/app/models/concerns
    )
  end
end