From: ts <decoux@...>
Date: 2002-11-20T00:47:09+09:00
Subject: Re: Need help dynamically creating classes.

>>>>> "d" == dblack  <dblack@candle.superlink.net> writes:

d> Is there any difference (significant or otherwise) between this and:

d>   def render
d>     @generate.call
d>   end

 Yes, self :-)


pigeon% cat b.rb
#!./ruby

class SceneObject
   def initialize(&generate)
      @generate = generate
   end
   alias init initialize

   def render
      instance_eval(&@generate)
   end

   def rendernot
      @generate.call
   end
end

def defineClass(name, &block)
   Object.const_set(name, Class.new(SceneObject)).instance_eval do
      define_method(:initialize) { init(&block) }
   end
end

defineClass("MyObject") do
   puts "render some object #{self}"
end

a = MyObject.new
a.render
a.rendernot
pigeon% 

pigeon% b.rb
render some object #<MyObject:0x401abb78>
render some object main
pigeon% 



Guy Decoux