From: daz <dooby@...10.karoo.co.uk>
Date: 2005-10-28T14:02:04+09:00
Subject: Re: Stuck with modules/classes/inheritance


Kev Jackson wrote:
> given:
>
> test.rb :
>
> require 'b'
>
> b = B.new
>
>
> lib/base.rb:
>
> module A
>   class Base
>   end
> end
>
> lib/b.rb:
>
> module A
>   class B < Base
>   end
> end
>
>
> Why do I get
>
> /lib/b.rb:2: uninitialized constant A::Base (NameError)
>         from test.rb:1:in `require'
>         from test.rb:1
>
> ?
>
> This is a stripped down version of what I want to do (ie organize my
> code into a module, but still keep classes in separate files, have a
> base class and inherit).
>
> It's probably something trivial, but at the moment I'm stuck - any help
> would be (as always) greatly appreciated
>
> Kev
>

Hi Kev,

require 'b' loads /and runs/ b.rb immediately.
You have at the top:

  module A
    class B < Base
    end
  end

Base is defined later, so you need to organise the require order (?).
Then b = A::B.new (as Eric said)

HTH,

daz