Best Practices- Fun with Class.new

Ruby is awesome. Anonymous Class Hacks:

Update: I came across an inlink to this page that was layering in advertisements in a frame. Luckily, there are technical solutions to at least some social problems, and you may now browse again in peace :) If you’ve worked with Ruby for at least a little while, you might already know that classes in Ruby are objects themselves, in particular, instances of Class . Before I get into the fun stuff, let’s quickly recap what that means. Here’s the ordinary way we define classes, as you all have seen. class Point def initialize(x,y) @x, @y = x,y end attr_reader :x, :y def distance(point) Math.hypot(point.x - x, point.y - y) end end The interesting thing is that the previous definition is essentially functionally equivalent to the following: Point = Class.new do def initialize(x,y) @x, @y = x,y end attr_reader :x, :y def distance(point) Math.hypot(point.x - x, point.y - y) end e...

Full article: http://blog.rubybestpractices.com/posts/gregory/anonymous...