Avdi Grimm avdi

An Object is a set of instance variables and a pointer to a 'singleton class'.
Properties are looked up in the instance variables, methods are dispatched via the singleton class.
Module is a subtype of Object. A Module is a set of methods and an ordered list of zero-or-more 'parent' modules.
Module A becomes a parent of module B via B.include(A).
Method lookup works by doing a depth-first right-to-left search of a module tree.
Class is a subtype of Module. A Class is a Module that can be instantiated.
A Class has only one 'superclass'. A class includes its superclass as its first parent module for the purposes of method dispatch. A class's singleton class includes the superclass's singleton class as its first parent.
The default superclass of all classes is Object.

	require 'equalizer'

	class EqualizableStruct < Struct
	def initialize *args, &block
	class << self
	include Equalizer.new(*members)
	end

	super
	end

	# If you don't want to force the composed methods to raise exceptions,
	# have them take a block specifying the failure action
	def composed_method
	frobulate_widgets { return false }
	refrobulate_widgets { return false }
	confribulate_frobulations { return false }
	true
	end

	public class Task : ActiveRecord
	{
	public string Name { get; set; }
	public int AssignedTo_UserId { get; set; }
	public DateTime DueOn { get; set; }

	public Task()
	{
	DueOn = DateTime.Now.AddDays(1);
	}

	require 'virtus'

	Point = Struct.new(:x, :y)


	class Rectangle
	include Virtus

	attribute :top_left, Point
	attribute :bottom_right, Point

	class Share
	def call
	list.each do \|address\|
	referral = new_referral(address)

	# All else being equal, I'd probably prefer a caller-specified
	# fallback strategy
	referral.save do
	@unsaved << referral
	end

	require 'spec_helper'

	describe Feeds::Drops::Rss::EntryDrop do
	use_vcr_cassette

	subject {
	Feeds::Drops::Rss::EntryDrop.new(rss_app.feed_entries_to_display[1], context)
	}
	let(:context) { mock('context') }
	let(:rss_app) {