From: Robert Dober <robert.dober@...>
Date: 2007-03-14T20:43:34+09:00
Subject: Re: how to add a "static method" dynamic ?

On 3/14/07, Yan Rong <yananay@126.com> wrote:
> now , i know that i can use
> "define_method" add a method dynamic,
> but i want to know how to add a "static method" dynamic ?
>
> thanks!
>
> --
> Posted via http://www.ruby-forum.com/.
>
>

There are no static methods, there are only instance methods.
But as about everything in Ruby is an Object, so is the class of your
object and so is the singleton class of your object, maybe the
following tricks are what you are looking for:
707/475 > cat class.rb && ruby class.rb
# vim: sts=2 sw=2 tw=0 expandtab nu:
class A
  define_method :one do |p| "one(#{p})" end
  class << self
    define_method :two do |p| "two(#{p})" end
  end
  eval 'def self.three p ; "three(#{p})" end'
end


puts A.new.one(42)
puts A.two(42)
puts A.three(42)
one(42)
two(42)
three(42)

Sorry for the double post Erik but I was not about to discard all that
hard work ;)
Please note the ugliness of the eval for :three but it gets the job done.
Personally I almost always use the singleton class method definition
even when declaring statically, but I believe that it is not *exactly*
the same thing.

Cheers
Robert

-- 
You see things; and you say Why?
But I dream things that never were; and I say Why not?
-- George Bernard Shaw