From: Daniel Schierbeck <daniel.schierbeck@...>
Date: 2006-05-10T21:32:43+09:00
Subject: Re: Intantiating a class by name

Daniel Schierbeck wrote:
> Isn't it more appropriate to call #to_str on `name'? I.e.
>   name.to_str.split(...

Come to think of it, Symbol doesn't define #to_str, so maybe this is better:

   name.to_sym.to_str.split(...

Furthermore, defining it in Module as a replacement for #const_get makes 
sense, since they do the same thing, our version is just smarter:

   class Module
     alias_method :old_const_get, :const_get
     def const_get(str)
       names = str.to_sym.to_s.split('::')
       names.inject(self){|parent, child| parent.old_const_get(child) }
     end
   end

   class A; class B; class C; end; end; end

   A.const_get :B              => A::B
   A::B.const_get :C           => A::B::C
   A.const_get "B::C"          => A::B::C
   Kernel.const_get "A::B::C"  => A::B::C


Cheers,
Daniel