Perl: array_chunk() to split arrays into smaller chunks

I have an large array in Perl that I need in smaller chunks to make iteration easier. I borrowed a concept from PHP and implemented array_chunk() in Perl.

my @orig = qw(foo bar baz one two three red yellow green donk);
my @new  = array_chunk(3, @orig);
sub array_chunk {
    my ($num, @arr) = @_;
    my @ret;

    while (@arr) {
        push(@ret, [splice @arr, 0, $num]);
    }

    return @ret;
}


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