[Ruby] A intializer

initializer.rb

# Found here: http://c2.com/cgi/wiki?PythonRubyInitializer
	class Class
	  def initializer(*args, &b)
	    define_method(:__init_proc) {b}
	    params = args.join(", ")
	    vars = args.collect{|a| "@#{a}"}.join(", ")

	    class_eval <<-EOS
	      def initialize(#{params})
		    #{vars} = #{params}
		    instance_eval &__init_proc
	      end
	    EOS
	  end
	end
#This lets me write code like:
	class Person
	  initializer(:name, :age, :gender) do
	    puts "Do more initialization for #{@name}"
	  end
	end
#instead of:
	class Person
	  def initialize(name, age, gender)
	    @name, @age, @gender = name, age, gender
	    puts "Do more initialization for #{@name}"
	  end
	end