Is there a way to bulky feed?

[Xiao Yafeng]

My question is: could I write below code in perl6:
                                    my @a = <1 2 3 4>; my @b[2]; for @a ->
@b {;}         # 2 loops like for @a -> $b[0],$b[1]{;}
                                    my @a = <1 2 3 4>; my @b; for @a -> @b
{;}             # 1 loop
                                    my @a = <1 2 3 4>; my @b[2];
grep(@b){say 'yes' if +...@b>3} <== @a;                       # 2 loops like
grep {$^a+$^b >3} <== @a;
                                    my @a = <1 2 3 4>; grep{say 'yes' if +...@_
>=10} <== @a;                                           # slurp

Since memory is cheaper and cheaper, bulky feed can maximize to make use of
memory and reduce loops.
Any thoughts?