From: Yoann Guillot <john-rubytalk@...>
Date: 2006-04-20T02:13:10+09:00
Subject: Re: Nested scopes

Pit Capitain wrote:
>
> >module Foo
> >  def self.bar
> >    puts "bar!"
> >  end
> >
> >  bar # works
> >
> >  class Baz
> >    # bar      # doesn't work
> >    # self.bar # doesn't work
> >    Foo.bar    # need to know the module name
> 
>       Module.nesting[ 1 ].bar
> 
> >  end
> >end
> 

Thanks, Module.nesting[-2] is quite close of what i need.
However i does not work in

class Foo::Baz
end

In this case i can use Robert Klemme's Module.outer, but this one
doesn't work with anonymous modules :)

In my case i'll just use this workaround, but i still think that's odd.

I found something close that behaves like i though it would, it's
constants:

class Parent
  PM = 'parent'
  P = 'parent'
end

module Mod
  PM = 'module'
  M = 'module'

  class Foo < Parent
    puts M   # => 'module'
    puts P   # => 'parent'
    puts PM  # => 'module'
  end
end

where there is still the problem of

class Mod::Foo
  puts M  # NameError: uninitialized constant
end


Why is there a difference in the lookup path for constants Vs methods ?


Yoann