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Multiple-dispatch on functions

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Michael G Schwern
August 30, 2001 19:03
Multiple-dispatch on functions
Message ID:
Thinking about what Zhang was saying about multiple-dispatch not being
inherently OO.  I think he's sort of right.  Multiple-dispatch need
not be confined to method lookups.

    foo($bar, $baz);

    sub foo () : multi {

    sub foo (Bar $bar) : multi {

    sub foo (Baz $baz) : multi {


Obviously, there would be no inheritance.  Otherwise, it's
just like multiple-dispatch where there's no superclass.

Handy, if it's not too hard to implement.


Michael G. Schwern   <>
Perl6 Quality Assurance     <>	     Kwalitee Is Job One
"Let's face it," said bearded Rusty Simmons, opening a can after the
race.  "This is a good excuse to drink some beer."  At 10:30 in the
morning?  "Well, it's past noon in Dublin," said teammate Mike
[Joseph] Schwern.  "It's our duty."
    -- "Sure, and It's a Great Day for Irish Runners" 
       Newsday, Sunday, March 20, 1988

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