From: matz@... (Yukihiro Matsumoto)
Date: 2003-02-20T08:48:55+09:00
Subject: Re: How to test for existence of instance variable?

Hi,

In message "Re: How to test for existence of instance variable?"
    on 03/02/20, Brian Candler <B.Candler@pobox.com> writes:

|>   Foo = Class.new(super) {
|>      def foo
|>        ...
|>      end
|>      ...
|>   }
|
|But then its name is fixed in the code as 'Foo'? What if the name I want to
|give to the class is in the string object 'klassname'? (Actually probably
|not important, as I'd be better to create an anonymous class and hold onto a
|reference to it rather than use it by name, but I'd still like to know :-)

Object.const_set(klassname, Class.new(super){...})

|Is the above example for Ruby 1.8+? I can't get it to work under 1.6.8, and
|the Pickaxe doesn't say anything about Class.new taking a block argument:

Yes.

							matz.