Looking back now .... 

my $ranksUsed = [ [ 1 ], [ 2 ] ];

my %ranksUsed;
for (@$ranksUsed) {
    $ranksUsed{$_->[0]}=undef;
}

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No map or sub array.

In reply to Re: array of arrays to hash by bitman
in thread array of arrays to hash by bitman

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