From: nobu.nokada@...
Date: 2004-03-12T22:16:54+09:00
Subject: Re: [Q] How to check if a constant already exists?

Hi,

For toplevel:
  defined?(Const)
  Object.const_defined?(:Const)

For nested:
  defined?(Outer::Const)
  Outer.const_defined?(:Const)

-- 
Nobu Nakada