From: Thufir <hawat.thufir@...>
Date: 2007-11-07T13:55:01+09:00
Subject: Re: dragons and factorials (keyboard input)

On Nov 6, 4:12 pm, Todd Benson <caduce...@gmail.com> wrote:
[...]
> You want to avoid method's being instantiated per object?  You can
> attach the method directly to a class...

For instance:

C:\code>
C:\code>
C:\code>type factorial.rb
 def fact(n)
        if n <= 1
                1
        else
                n * fact(n - 1)
        end
end
C:\code>
C:\code>


I think that factorial would best be a module, as module's cannot be
instantiated.  However, I would also want to prevent factorial from
being extended so that nothing "from" it can be instantiated.  The
idea of a factorial "object", or an object which descends from it,
strikes me as ludicrous.  Is this un-ruby-ish thinking?


-Thufir