my @array = 1..10;
my $r = sub { \@_ }->(@array);
while (my @chunk = splice @$r, 0, 2) {
    print "Chunk: @chunk\n";
}
print "Original array is still intact! (@array)\n";

##</code><code>##

my @array = 1..10;
for (my $i = 0; $i <= $#array; $i += 2) {
    my @chunk = @array[$i, $i + 1];
    print "Chunk: @chunk\n";
}