From: Martin Boese <boesemar@...>
Date: 2009-09-06T23:36:27+09:00
Subject: Re: something.new( :attribute => value) thing

On Sun, 2009-09-06 at 03:06 +0900, Marc-antoine Kruzik wrote:
> >    A.send(:attr_accessor, key)
> >    send("#{key}=", val)
> 
> This solution is what I was looking for.
> With a bit of work, I will be able to write code like this :

Hi Marc,

I'd try to keep it simple:

class A
 def initialize(param_a, param_b, options = {})
    @x = options[:x] || 50     # defaults to 50 if not specified
    @y = options[:y] || 100
    @z = options[:z] || 'red'
    puts "Initialized with #{@x}/#{@y}/#{@z}"
 end
end

a = A.new("hello", "world", :x => 10, :y => 20, :z => "red")
Initialized with 10/20/red

a = A.new("hello", "world", :z => "red", :y => 20, :x => 10)
Initialized with 10/20/red

a = A.new("hello", "world", :z => "red")
Initialized with 50/100/red

a = A.new("hello", "world", :x => 10)
Initialized with 10/100/red



- Martin