cheald

class Foo
  def value
    "Value"
  end

  def eval_stuff
    instance_eval &(Proc.new { puts value })
    instance_eval &(Proc.new {|foo| puts foo.value })
    instance_eval &(lambda   {|x| puts x.value })
    instance_eval &(lambda   {|x| puts value })

cheald

describe "let behavior" do
  foo = "original recipe"
  let(:foo) { "extra crispy" }

  specify { foo.should == "extra crispy" }
end

cheald

require 'active_support/core_ext/array'

class FactoryGirl
  attr_accessor :options

  def self.create(model, options = {})
    new(model, options)
  end

  def initialize(model, options)

cheald

        def let(name, &block)
          define_method(name) do
            __memoized.fetch(name) {|k| __memoized[k] = instance_eval(&block) }
          end
        end

cheald

require 'active_support/core_ext/array'

class FactoryGirl
  attr_accessor :options

  def self.create(model, options = {})
    new(model, options)
  end

  def initialize(model, options)

cheald

module ActiveSupport
  module FastSafeBuffer
    [
      :capitalize, :chomp, :chop, :delete, :downcase, :gsub, :lstrip,
      :next, :reverse, :rstrip, :slice, :squeeze, :strip, :sub,
      :succ, :swapcase, :tr, :tr_s, :upcase, :prepend
    ].each do |unsafe_method|
      if String.new.respond_to? unsafe_method
        module_eval <<-EVAL
          def #{unsafe_method}!(*)

cheald

## Decorating 
chris@luna /var/www/rails3-follow git:(master*) ruby-1.9.3 % rails r bench.rb
{:count=>39, :heap_used=>2169, :heap_length=>2444, :heap_increment=>0, :heap_live_num=>498236, :heap_free_num=>378418, :heap_final_num=>9986}
       user     system      total        real
Extend  0.820000   0.040000   0.860000 (  0.868023)
{:count=>39, :heap_used=>6147, :heap_length=>7027, :heap_increment=>880, :heap_live_num=>498236, :heap_free_num=>2004679, :heap_final_num=>0}

## Extending
chris@luna /var/www/rails3-follow git:(master*) ruby-1.9.3 % rails r bench.rb
{:count=>39, :heap_used=>2169, :heap_length=>2444, :heap_increment=>0, :heap_live_num=>498514, :heap_free_num=>378128, :heap_final_num=>9986}

cheald

class Question < ActiveRecord::Base

  belongs_to :survey

  def samples
    populate_samples
  end

  private
  def populate_samples

cheald

$__load_path_size = nil
$__cached_load_paths = {}
$__cache_scanned = {}

PATH_START_SLASH = "/"
PATH_START_PERIOD = "."
PATH_START_TILDE = "~"

::Kernel.class_eval do
  alias __gem_original_require gem_original_require

cheald

Submission.from_upload(user, upload).tap do |s|
  add_submission s
  publish 'submission.uploaded', s.to_hash
end