From: Nit Khair <sentinel.2001@...>
Date: 2008-10-03T03:30:29+09:00
Subject: Re: Problem extending (adding methods) to class

Jakub Pavl鱈k jn. wrote:
> module ModuleM
>   class ClassC
>     # add new methods here
>   end
> end
> 
Thanks, this worked fine.

> 
> Similarly if you want to subclass ClassC, you can do it inside ModuleM
> 
> module ModuleM
>   class ClassD < ClassC
>     # blah blah
>   end
> end
> 

Not tried this.

> or outside:
> 
> class ClassD < ModuleM::ClassC
>   # blah blah
> end
> 

THIS did not work. I got NoMethodErrors trying this out. I spent many 
hours checking and trying to see if some other error was happening.

I needed:
class AForm < Ncurses::FORM

class BForm < AForm
and so on.

So finally, i removed the < clause abd created an instance in the 
initializer. And used "method_missing" to call methods of that instance. 
This is working perfectly, i can keep subclassing ... However, i still 
want to understand what i did wrong. or what i am not understanding 
about classes within modules.
---
Why create classes within modules ? Is it only a namespace issue - to 
avoid clashes with other classes. Is it like java's package?

Should we always create modules and packages inside them in a project 
with many classes ? Currently I have only one module with common stuff 
and a heriarchy of classes under no module.
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