From: Brian Candler <b.candler@...>
Date: 2010-01-24T05:46:11+09:00
Subject: Rules for constant lookup

Can somebody point me to an *accurate* list of the rules for constant
lookup?

I've just been caught out by the following.

==> works.rb <==
module Foo
  class Bar; end
  class Baz
    def initialize
      @bar = Bar.new
    end
  end
end

Foo::Baz.new

==> broken.rb <==
module Foo
  class Bar; end
end

class Foo::Baz
  def initialize
    @bar = Bar.new
  end
end

Foo::Baz.new

In both cases there is a module Foo, a class Foo::Bar and a class
Foo::Baz. The only difference between the two is that one uses "module
Foo; class Baz" and the second uses "class Foo::Baz"

I thought the two were identical if module Foo already exists, but
clearly I was mistaken.

Regards,

Brian.
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