Damian Conway wrote:
> I have a draft RFC that proposes that the LIST argument of a
> grep be optional in a hash slice, and default to the key list
> of the sliced hash. So:
That's a waste of RFC paper, Damian. But let's generalize it a bit,
and say that Perl6 should have a standard intrinsic mechanism --
perhaps just an extension of C<caller> -- which allows any sub to
get whatever details it wants on its calling context.
"Was I called in list context as the index of a hash slice? What hash?"
This would allow any user func (not to mention built-ins) to decide for
itself what its default arguments should be.
--
John Porter
We're building the house of the future together.
