Returning an Array from a raku subroutine

gistfile1.txt

# Or if you want to be check each element then you can
# create a subset that does so
subset ArrayOfInt of Array where { .all ~~ Int };

sub d(Int $a, Int $b --> ArrayOfInt) {
     [$a, $b];
}

say d(1, 2);

loose.raku

# Because the type of the Array needs to match one may
# opt for looser typing
sub d(Int $a, Int $b --> Array) {
     [$a, $b];
}

say d(1, 2);

strong.raku

# In order to have the typed array the return value must
# be the same type - the parameter to the Array is part of the type
sub d(Int $a, Int $b --> Array[Int]) {
     Array[Int].new($a, $b);
}

say d(1, 2);