From: "David A. Black" <dblack@...>
Date: 2008-09-30T19:53:00+09:00
Subject: Re: extend keyword in class definition

Hi --

On Tue, 30 Sep 2008, janus wrote:

> David
>
> Am a little confused by your codes, from all I understood in these
> threads.
>    module M
>      def speak
>       puts "Hi!"
>     end
>   end
>
>    obj = Object.new
>    obj.extend(M)
>    obj.speak
>
> obj.speak should be Object.speak. Why is yours different? And your
> second code agreed with singleton idiom.

I'm not sure what you mean by "should be". The way it's written,
Object does not have a "speak" method, but obj does. That's the effect
of extend: it adds module-based functionality to a single object.


David

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