From: Christoph <chr_news@...>
Date: 2002-09-12T06:18:33+09:00
Subject: Re: Multimethods (was Re: Larry Wall's comments on Ruby)

"Joel VanderWerf"  wrote
....
....
> Without changing Ruby internals, what about something like:
>
>
> module Physics
>
>    Collide = GenericFunction.new {|actor, object, *args|}

Nice!  ... additionally one could also explicitly specify the
number of  ``dispatch-relevant arguments ?
     Collide = GenericFunction.new(2) {|actor, object, *args|}

>
>    #
>    # The generic function will dispatch on actor and object, but
>    # simply pass args to the selected method.
>    #
>    # The distinction in the block can be detected by checking whether #arity
>    # returns 3 or -3.
>    #
>
> end
....


/Christoph