From: "Wayne E. Seguin" <wayneeseguin@...>
Date: 2007-08-02T00:38:42+09:00
Subject: Re: Help:  Get list of modules which are included in the class

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On Aug 01, 2007, at 08:56 , dohzya wrote:
> Le mercredi 01 ao=FBt 2007 =E0 05:44 +0900, Wayne E. Seguin a =E9crit =
:
>> <snip>
> There is a problem (him ! again ! Arrrrrrg (Monthy Python dixit (yeah
> for Monthy Ruby !!! (sorry, I'll try to stop lisp-mod ;)))))
> You should try this :
> ---
> module Module1; end
> class Class1; include Module1 end
> module Module2; end
> class Class2 < Class1; include Module1 ; include Module2 end
>
> Class1.included_modules
> Class2.included_modules
>
> Class1.directly_included_modules
> Class2.directly_included_modules # see this result
>
> Class1.inherited_modules
> Class2.inherited_modules
> ---
>
> --
> Etienne Vallette d'Osia

Etienne,

Thank you very much for this feedback. After thinking about it, here =20
is my take on this:

We include Module1 in Class1 and so from inheritence this implies =20
that Class2 does not actually include Module1 directly, since it has =20
already been included.  Hence including Module1 in Class2 is =20
effectively a no-op.

This makes semantic sense, also: "directly_included_modules" should =20
be the modules that self includes which the superclass does not. In =20
this light Module1 is not directly included so my code does what is =20
expected.

(Also, for the record, Module already has an included_modules method, =20=

but I am overwriting because I don't want Kernel listed for my purposes)

(Thanks to Mark Josef for helping me with this idea)

--
Wayne E. Seguin
Sr. Systems Architect & Systems Admin
wayneseguin@gmail.com




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