Makes any NSObject conform to the NSCoding protocol

serializable.rb

# Makes any NSObject conform to the NSCoding protocol
# Authors:
# @rod_wilhelmy
# @cicloid

module Serializable

  def attr_accessor_setters
    methods.grep(/\w=:$/)
  end

  def initWithCoder(coder)
    self.init
    attr_accessor_setters.each do |method|
      key = method.to_s.sub('=:', '')
      self.send(method, coder.decodeObjectForKey(key))
    end
    self
  end

  def encodeWithCoder(coder)
    attr_accessor_setters.each do |method|
      key = method.to_s.sub('=:', '')
      coder.encodeObject(self.send(key), forKey:key)
    end
  end

end

Usage:

class User
  include Serializable
  attr_accessor :id, :name, :avatar_url, :nickname, :email
end

Cool!
A module system for the C family: http://llvm.org/devmtg/2012-11/Gregor-Modules.pdf?=submit

That is brilliant, although took me a while to understand exactly how it works! Didn't realise setters were returned as example_setter:= by the methods method