From: Austin Ziegler <austin@...>
Date: 2002-09-13T10:10:44+09:00
Subject: Re: not grasping the method overloading/multi-dispatch thing

On Fri, 13 Sep 2002 07:22:35 +0900, Paul Brannan wrote:
> On Fri, Sep 13, 2002 at 05:41:20AM +0900, Rich Kilmer wrote:
>> def fred(*args)
>>   case args.collect { |a| a.type}
>>     when [Float, Fixnum, String]
>>       f, i, s = args
>>     # ...
> 
> With this mechanism, how can I add a new signature to the list?
> What if I want to extend fred() to work with GMP Integers?

You could, of course, subclass the class that owns fred and then
implement your match; if nothing matches, then you call the base
parent. Or, perhaps, you use the aliasing feature.

-austin
-- Austin Ziegler, austin@halostatue.ca on 2002.09.12 at 21.07.41