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def logging_features_deprecated
  # Currently not deprecated; change to true when it is deprecated
  proc { false }
end

deprecate "file logging", :when => logging_features_deprecated do
  # whatever
end

jm

def create_from_string(klass, string = "")
  # like calling String.new  or something because 
  # klass is a variable representing the class you passed in
  klass.new(string)
end

x = create_from_string(String, "dude")
y = create_from_string(Regexp, "wat")

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plugin 'restful-authentication', :git => 'git://github.com/technoweenie/restful-authentication.git'
plugin 'open_id_authentication', :git => 'git://github.com/rails/open_id_authentication.git'
plugin 'exception_notifier', :git => 'git://github.com/rails/exception_notification.git'

gem 'mislav-will-paginate'
gem 'ruby-openid'
gem 'rubyist-aasm'

rakefile "bootstrap.rake", <<CODE
  namespace :app do

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class ShapeController < AC::Base
  SHAPES = { 'square' => Shape::Square, 'circle' => Shape::Circle }

  def create
    s = SHAPES[params[:shape]].create(params)
  end
end

jm

[codestuff (master)]$ sudo gem install session
Bulk updating Gem source index for: http://gems.github.com
ERROR:  While executing gem ... (Gem::RemoteSourceException)
    HTTP Response 403 fetching http://gems.rubyforge.org/yaml

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class A
  @@foo = "from A"
end

class B < A
  @@foo = "from B"
end

# What's the value of @@foo in A now...?

jm

First, rewinding head to replay your work on top of it...
Applying: Improve rewindable input test coverage so tests fail when you remove the middleware
error: actionpack/test/controller/request/multipart_params_parsing_test.rb: does not exist in index
error: actionpack/test/controller/request/url_encoded_params_parsing_test.rb: does not exist in index
Using index info to reconstruct a base tree...
Falling back to patching base and 3-way merge...
Renaming actionpack/test/controller/request/multipart_params_parsing_test.rb => actionpack/test/dispatch/request/multipart_params_parsing_test.rb
Auto-merging actionpack/test/dispatch/request/multipart_params_parsing_test.rb
CONFLICT (rename/modify): Merge conflict in actionpack/test/dispatch/request/multipart_params_parsing_test.rb
Renaming actionpack/test/controller/request/url_encoded_params_parsing_test.rb => actionpack/test/dispatch/request/url_encoded_params_parsing_test.rb

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root@mycomp:/home# gem --version
1.2.0

root@mycomp:/home# gem update --system
Updating RubyGems...
Nothing to update

root@mycomp:/home# gem install rubygems-update --version=1.3.0
root@mycomp:/home# update_rubygems
# Tons of text...

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class PostsController < ApplicationController
  respond_to :html, :xml
  
  def index
    @posts = Post.all

    respond_with @posts
  end

  def show

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class Bar
  attr_reader :hash
  def method_missing(m, *args)
    if m.to_s =~ /((set|get)_(.+))/
      case $2
      when 'set'
        self.class.send(:define_method,$1, lambda {|value| @hash ||= {}; @hash[$3] = value})
        send($1, args[0])
      when 'get'
        self.class.send(:define_method,$1, lambda {@hash ||= {};  @hash[$3]})