RosettaCodeData/Task/Generator-Exponential/Perl-6/generator-exponential.pl6

sub powers($m) { $m XR** 0..* }

my @squares = powers(2);
my @cubes   = powers(3);

sub infix:<with-out> (@orig,@veto) {
    gather for @veto -> $veto {
        take @orig.shift while @orig[0] before $veto;
        @orig.shift if @orig[0] eqv $veto;
    }
}

say (@squares with-out @cubes)[20 ..^ 20+10].join(', ');