I've got something on CPAN which does similar.

use strict;
use warnings;
use List::MapMulti;
use Data::Dump 'pp';

my @a = 1..3;
my @b = 4..6;
my @c = 7..9;

pp mapm { $_[0] . $_[1] . $_[2] } \@a, \@b, \@c;

[download]

It can also be used as an iterator:

use strict;
use warnings;
use List::MapMulti 'iterator_multi';
use feature 'say';

my @a = 1..3;
my @b = 4..6;
my @c = 7..9;

my $iter = iterator_multi( \@a, \@b, \@c );

while ( my ( $a, $b, $c ) = $iter->() ) {
    say $a, $b, $c;
}

[download]
toby döt ink

In reply to Re^5: nested maps by tobyink
in thread nested maps by jczeus

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