From: Jeremy Bopp <jeremy@...>
Date: 2010-10-31T00:40:04+09:00
Subject: Re: Dynamically reference instance vars

On 10/30/2010 07:28 AM, Andrew Wagner wrote:
> C'mon, this is ruby! Revel in it!
> 
> class Shape
>   attr_reader :details
>   def self.keys
>     [:size, :fill_color, :line_color, :line_color]
>   end
> 
>   def initialize
>     @details = {}
>     self.class.keys.each {|key| @details[key] = "" }
>   end
> 
>   keys.each do |key|
>     define_method key do
>       @details[key]
>     end
> 
>     define_method "#{key}=" do |input|
>       @details[key] = input
>     end
>   end
> end
> 
> my_shape = Shape.new
> 
> shape_details = {
>  :size => 'small',
>  :fill_color => 'red',
>  :line_color => 'black',
>  :line_width => '2'
> }
> 
> my_shape.details.merge!(shape_details)

Excellent point!  Thanks!

-Jeremy