From: Pit Capitain <pit@...>
Date: 2005-04-20T16:07:25+09:00
Subject: Re: [ANN] Article: Seeing Metaclasses Clearly

David A. Black schrieb:
> 
> Although... here's something interesting:
> 
> irb(main):001:0> a = ""
> => ""
> irb(main):002:0> c = (class << a; self; end)
> => #<Class:#<String:0x401f8b6c>>
> irb(main):003:0> a.instance_of?(c)
> => false
> irb(main):004:0> a.instance_of?(String)
> => true
> irb(main):005:0> s = class << String; self; end
> => #<Class:String>
> irb(main):006:0> String.instance_of?(s)
> => false
> irb(main):007:0> String.instance_of?(Class)
> => true

But note that

   irb(main):001:0> a = ""
   => ""
   irb(main):002:0> c = (class << a; self; end)
   => #<Class:#<String:0x2dae6d0>>
   irb(main):003:0> c === a
   => true

Regards,
Pit