From: Robert Klemme <shortcutter@...>
Date: 2011-01-05T17:21:43+09:00
Subject: Re: Is singleton class of an object already created?

On Wed, Jan 5, 2011 at 2:36 AM, Samnang Chhun <samnang.chhun@gmail.com> wrote:
> I'm not sure every time we invoke 'singleton_methods', then it will
> create the singleton class if it doesn't exist yet.

Apparently it doesn't according to Brian's test:

irb(main):001:0> x="foo"
=> "foo"
irb(main):002:0> Marshal.dump(x)
=> "\x04\bI\"\bfoo\x06:\rencoding\"\nCP850"
irb(main):003:0> x.singleton_methods
=> []
irb(main):004:0> Marshal.dump(x)
=> "\x04\bI\"\bfoo\x06:\rencoding\"\nCP850"
irb(main):005:0> def x.a;end
=> nil
irb(main):006:0> Marshal.dump(x)
TypeError: singleton can't be dumped
        from (irb):6:in `dump'
        from (irb):6
        from /opt/bin/irb19:12:in `<main>'
irb(main):007:0>

Kind regards

robert

-- 
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