zip

Walk multiple arrays in lockstep, returning one arrayref per row.

Registered under both zip and zip_longest. Both forms stop at the length of the longest input and fill missing positions with undef.

Synopsis

my @rows = zip         \@a, \@b, \@c;
my @rows = zip_longest \@a, \@b, \@c;
foreach ( zip \@xs, \@ys ) {
    my ($x, $y) = @$_;
}

What you get back

A list of arrayrefs, one per row. Row i contains the i-th element of each input array in order. Shorter inputs contribute undef beyond their own length.

Examples

my @r = zip [1..3], ['a'..'c'];   # ([1,'a'], [2,'b'], [3,'c'])
my @r = zip [1..3], ['a'..'b'];   # ([1,'a'], [2,'b'], [3,undef])

Differences from upstream

Fully compatible with upstream.

See also

• zip_shortest — stop at the shortest input.

• mesh — flatten the rows instead of wrapping in arrayrefs.