From: Robert Klemme <shortcutter@...>
Date: 2007-01-26T02:01:55+09:00
Subject: Re: Class.new ?

2007/1/25, Avdi Grimm <avdi@avdi.org>:
> The first example off the top of my head:
>
> A class which might return an existing object out of an object pool,
> instead of returning a new object.
>
> But there are plenty of other possibilities.

Singletons for example.

irb(main):001:0> require 'singleton'
=> true
irb(main):002:0> class Foo
irb(main):003:1> include Singleton
irb(main):004:1> end
=> Foo
irb(main):005:0> Foo.new
NoMethodError: private method `new' called for Foo:Class
        from (irb):5
        from :0
irb(main):006:0> Foo.instance
=> #<Foo:0x7ef71114>
irb(main):007:0> Foo.instance
=> #<Foo:0x7ef71114>
irb(main):008:0> Foo.instance
=> #<Foo:0x7ef71114>
irb(main):009:0>

Kind regards

robert

PS: The gateway seems to have trouble again - I see only some of the
postings in this thread on the news side...