It looks like deleting the last element of an array no longer deletes the
undefined elements before it:
> my $foo = [0,1,2,3,4]; say $foo.elems; say $foo.perl
5
[0, 1, 2, 3, 4]
> $foo[4] = Any; $foo[3] = Any; say $foo.elems; say $foo.perl
5
[0, 1, 2, Any, Any]
> $foo[4] :delete; say $foo.elems; say $foo.perl
4
[0, 1, 2, Any]
The same with class Foo:
> class Foo {}; my $foo = [0,1,2,3,4]; $foo[4] = Foo; $foo[3] = Foo; $foo[4]
> :delete; say $foo.elems; say $foo.perl
4
[0, 1, 2, Foo]
Is that the expected behaviour? The IRC log above expressed same doubts about
that.
