>From the recent P6 Summary:
> Larry's response is a masterpiece of conciseness:
>
> Well, actually, we saved you last summer when we decided to make +
> mean that the parameter must be named.
Larry's response also didn't really address the issue, since parameters
marked with a + in the signature are optional, not required.
> Discussion continued after this of course, but it was mostly concerned
> with making sure things worked as expected.
The continuing discussion revealed why it is not possible to check for
required params at compile time (well, for methods, anyway), but I still
wanted a way to tell Perl 6 to do runtime checks "for me" in response to a
particular signature.
Damian suggested an "is required" trait for signatures:
> sub foo(+$a is required, +$b is required) { ... }
which I'm all for, even if it is only a runtime check, but I'm not sure if
this is just one of Damian's Crazy Ideas(tm) or if it'll actually end up as
a standard part of the Perl 6 language.
-John
