Good evening

This is a piece of my code that is taking up way to much time. The contents of @data are as large as 60 meg 

foreach my $record (@data) {
    foreach my $data (@m_info) {
        if ($record->[1] =~ /$data->[0]/) {
            $record->[1] = $data->[3];
            $record->[1] = join ("", $record->[1], "_", $data->[1]);
        }
    }
}

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It needs to iterate through an array (@data) and then iterate through another array(@m_info) and look for a match.

I have though about using a hash keyed by the record info in the @data array, but @m_info is an array of arrays.

Your thoughts are greatly appreciated !

In reply to More efficient Data Structure needed by Anonymous Monk

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