From: ara.t.howard@...
Date: 2005-12-09T12:50:40+09:00
Subject: Re: extend an object using string as module name?

On Fri, 9 Dec 2005, ako... wrote:

> hello,
>
> is this a proper way to do it:
>
> name = 'MyModule'
> o = Object.new
> o.extend(Module.const_get(name))
>
>
> are there better ways?

this will fail for "ModuleA::ModuleB".  for that you need something like:

     #
     # creates a class by class name
     #
       def klass_stamp(hierachy, *a, &b)
#--{{{
         ancestors = hierachy.split(%r/::/)
         parent = Object
         while((child = ancestors.shift))
           klass = parent.const_get child
           parent = klass
         end
         klass::new(*a, &b)
#--}}}
       end

this will work for

   m = klass_stamp "A::B::C::Module"
   o = Object::new
   o.extend m

it's in alib.rb btw.

hth.

-a
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