From: Dean Wampler <deanwampler@...>
Date: 2007-11-03T05:41:25+09:00
Subject: Re: How do I tell the difference between a class C and the singleton class of an instance of C

------=_Part_16153_31832292.1194036086386
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

I just figured out a way, if I also have the instance "c".

c.instance_of?(C)  # => true
c.instance_of?(sing) # => false

Also works for kind_of? and is_a?

Thanks, Dean! ;)

On 11/2/07, Dean Wampler <deanwampler@gmail.com> wrote:
>
> Suppose that:
>
> class C; end
> c = C.new
> sing = (class << c; self; end)
>
> If a method is called with C and sing, but I don't know which is first and
> which is second in the parameter list, how do I tell them apart?
>
> Thanks,
> dean
>
> --
> Dean Wampler
> http://www.objectmentor.com
> http://www.aspectprogramming.com
> http://aquarium.rubyforge.org
> http://www.contract4j.org




-- 
Dean Wampler
http://www.objectmentor.com
http://www.aspectprogramming.com
http://aquarium.rubyforge.org
http://www.contract4j.org

------=_Part_16153_31832292.1194036086386--