From: Michael Edgar <adgar@...>
Date: 2011-07-29T18:34:25+09:00
Subject: Re: class variables in modules, annoying

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On Jul 29, 2011, at 5:27 AM, I=F1aki Baz Castillo wrote:

> But I didn't expect it to occur using a module as
> I'm not inheriting from a class.

Including a module inserts that module into the inheritance hierarchy.

class A
end
class B < A
end
module M
end

p B.ancestors
#=3D> [B, A, Object, Kernel, BasicObject]
class B
  include M
end

p B.ancestors
#=3D> [B, M, A, Object, Kernel, BasicObject]

More details than you'd probably like about this mechanism can be
found in a blog post of mine:

http://carboni.ca/blog/p/Modules-How-Do-They-Work

Michael Edgar
adgar@carboni.ca
http://carboni.ca/


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