From: Robert Klemme <shortcutter@...>
Date: 2006-05-23T23:41:33+09:00
Subject: Re: initializing instance variables in a module

2006/5/22, Jeff Rose <rosejn@gmail.com>:
> Have a module:
>
> Module Foo
>    def add_stuff(key, stuff)
>      @foo_the_stuff[key] = stuff
>    end
> end
>
> class Bar
>    include Foo
> end
>
> Is there a standard or correct way to initialize @foo_the_stuff in this
> example?  Should the add_stuff method check whether the variable has
> been initialized every time, or should this be done by implementing a
> callback like append_features or included?  (That's how I'd want to do
> it, but it's not clear which or how...)

This thread seems to have gone astray a bit but I didn't see this
solution which I regard the standard way to handle this. The important
part is to use initialize(*a,&b) in the module. I've put this on the
wiki for easier reference:

http://wiki.rubygarden.org/Ruby/page/show/InitializingWithInheritance

Kind regards

robert


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