From: nobu.nokada@...
Date: 2002-02-19T16:03:33+09:00
Subject: Re: Anonymous class support

Hi,

At Tue, 19 Feb 2002 10:33:31 +0900,
David Corbin <dcorbin@imperitek.com> wrote:
> I find Java anonymous classes to be very helpful when writing UnitTests, 
> because I can overide a method for "one time use" just to verify it gets 
> called correctly.
> 
> I realize that I can write a new class that responds to whatever methods 
> I need.  But I'm talking about the syntactic convenience of  defining 
> the method as part of the the new call.
> 
> Does Ruby have support for anything like this?

As written already, you can use blocks, singleton methods, and
anonymous class with Class.new like:

  Class.new(superclass).class_eval do
    def foo
    end
  end

In 1.7, .class_eval isn't necessary.

-- 
Nobu Nakada