From: Gyoung-Yoon Noh <nohmad@...>
Date: 2005-10-31T12:06:04+09:00
Subject: Re: determining whether an object is an immediate?

On 10/31/05, Gyoung-Yoon Noh <nohmad@gmail.com> wrote:
> On 10/31/05, Eric Mahurin <eric_mahurin@yahoo.com> wrote:
> > It is slow, but this is probably one of the better definitions
> > of what an immediate is - whether it exists in ObjectSpace or
> > not.
> >
> > Here's another solution:
> >
> > class Object;    def immediate?;false;end;end
> > class Fixnum;    def immediate?;true; end;end
> > class Symbol;    def immediate?;true; end;end
> > class NilClass;  def immediate?;true; end;end
> > class FalseClass;def immediate?;true; end;end
> > class TrueClass; def immediate?;true; end;end
> >
>
> Here is one-line version:
>
> [Object, Fixnum, Symbol, NilClass, FalseClass, TrueClass].each { |c|
> c.instance_eval { define_method(:immediate?) { true } } }
>
> --
> http://nohmad.sub-port.net
>
>

Ouch, except Object:

>> [Object, Fixnum, Symbol, NilClass, FalseClass, TrueClass].each {
|c| c.instance_eval { define_method(:immediate?) { (Object == self) ?
false : true } } }
#=> [Object, Fixnum, Symbol, NilClass, FalseClass, TrueClass]
>> Fixnum.immediate?
#=> true
>> Object.immediate?
#=> false

--
http://nohmad.sub-port.net