On Mon, Jun 09, 2003 at 01:26:22PM +0100, Piers Cawley wrote:
Multimethod dispatch?
Assuming I'm not misunderstanding what Adam is after, this has come up before (I think I asked about value based dispatch a few months back) and I can't remember if the decision was that MMD didn't extend to dispatching based on value, or if that decision hasn't been taken yet. If it's not been taken, I still want to be able to do
multi factorial (0) { 1 } multi factorial ($n) { $n * factorial($n - 1) }
That's a bad example, as it's really not MMD. It's a partially pre-memoized function instead.
Which brings up a issue. Is it really MMD if you're only dispatching on a single invocant? Most of the examples I've seen for MMD so far use only a single invocant and are really either regular dispatch or simple overloading instead. MMD only becomes really interesting if you have multiple invocants possibly with best-match signature matching involved.
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