Autrijus Tang <[EMAIL PROTECTED]> wrote:
> my sub get_book () of Hash of Array of Recipe {...}
> my num @nums = Array of num.new(:shape(3;3;3));
> Does Parrot's MMD carry this type information natively?
Neither of above. But:
multi sub foo(Int $a, Num $b) { ... }
aka
.sub foo @MULTI(Int, Num)
- creates a MultiSub PMC stored in the current namespace as "foo"
- stores the sub itself as "[EMAIL PROTECTED]@Num" and
- attaches that Sub PMC to the MultiSub
> ..., and Ponie can then
> reuse the same name-mangling to call into Perl 6 subroutines.
Well, I presume that this could cover just the static case, which with
the absence of types in Perl5/Ponie, would make it impossible to call
multisubs.
Anyway Parrots MMD system depends on types. *If* the Perl6 compiler defines
above array as
cl = subclass "FixedFloatArray", "num_Array_shape_3_3_3"
then this kind of array would be a distinct type. The other possiblity
is: we have one Multi_shaped_FloatArray, which takes an initializer with
the dimensions (see e.g. classes/multiarray.pmc) then all these shaped
num arrays would be one type, dispatching to the same routines.
> Thanks,
> /Autrijus/
leo
