On Sun, 13 Oct 2002, Trey Harris wrote: : I was going to say the same thing, but then I remembered that Perl 6 : methods, unlike the sub 'methods' in Perl 5, won't get the invocant as the : first real argument--it will be the topic instead. And I don't think you : can do multiple-dispatch on topic, can you?
The topic *is* the first real argument. It's just that you aren't required to name the first argument. Whether an argument has a name or not is somewhat independent of whether it can participate in multiple dispatch. It might be convenient for the argument to have a type, however. The use of an implicit invocant should not be confused with out-of-band topicalization. That's a mechanism for binding the outer topic to a formal parameter that is not necessarily the inner topic. Larry
