Ew. Copying both arrays to avoid destroying them is horribly inefficient. As is building an array only to return it as a list: 

sub zip {
    my( $r1, $r2 ) = @_;
    map {
        $r1->[ $_ ], $r2->[ $_ ]
    } 0 .. ( @$r1 > @$r2 ? @$r1 : @$r2 );
}

[download]

Updated length determination.

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In reply to Re^2: Making a hash with lists by BrowserUk
in thread Making a hash with lists by knarf

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