Re: A12: Required Named Parameters Strike Back!

[Damian Conway]

John Siracusa asked:

Well, actually, we saved you last summer when we decided to make +
mean that the parameter must be named.
...named and required, or named and optional?
Named and optional, by default.

 IOW, is this all true?

    sub foo(+$a, +$b) { ... }

    foo();          # compile-time error!
No.

    foo(1, 2);      # compile-time error!
Yes.

    foo(a => 1, 2); # compile-time error!
Yes.

    foo(a => 1);    # compile-time error!
No.


    foo(a => 5, b => 7); # ok
    foo(b => 1, a => 2); # ok
Yes. Yes.

You want:

     sub foo(+$a is required, +$b is required) { ... }

Damian