From: Robert Dober <robert.dober@...>
Date: 2007-07-25T17:21:35+09:00
Subject: Re: Help: Get list of modules which are included in the class

On 7/25/07, Chirag Mistry <chirag80bece@gmail.com> wrote:
> Hi
>
> I want to get a list of modules which are included directly in the class
> in ruby. Example: Suppose below are two modules and a class defined in
> ruby script.
> -------------------
> module M1
>   �
> end
> module M2
>   �
> end
> class MyClass
>   include M1
>   include M2
>   �
> end
> -------------------
> How can I get list of modules which are included directly in the class?
> Here in above example, M1 and M2 are only included in class MyClass so I
> only want a list which contains modules M1 and M2 for MyClass. If we
> call "MyClass.ancestors" which returns all the modules which are include
> directly or indirectly in this class and all parent class hierarchy that
> exactly I don't want to get.
>
> Regards
> Chirag
> --
> Posted via http://www.ruby-forum.com/.
>
>
Maybe my friend irb can help ;)
irb(main):001:0> module M1; end
=> nil
irb(main):002:0> class C1; include M1 end
=> C1
irb(main):003:0> module M2; end
=> nil
irb(main):004:0> class C2 < C1; include M2 end
=> C2
irb(main):017:0> class Module
irb(main):018:1>   def included_modules
irb(main):019:2>     ancestors.select{|x|x.class==Module}
irb(main):020:2>   end
irb(main):021:1> end
irb(main):022:0>  C1.included_modules
=> [M1, Kernel]
irb(main):023:0> C2.included_modules
=> [M2, M1, Kernel]

You can get of Kernel of course if you do not want it to show up at the party.
HTH
Robert


-- 
I always knew that one day Smalltalk would replace Java.
I just didn't know it would be called Ruby
-- Kent Beck