Have you considered using a loop instead of writing out the passes verbatim?

Consider starting with a for loop (perlsyn) that does the five steps:

for my $step (1..5) { # Perform one step };

Then you could consider repeating until you have not found any predecessor anymore:

my $changed= 1;
while( $changed ) {
    $changed= 0;

    ...
    for my $row (@table) {
        if( $main{ $row->[0] }  ) {
            $changed= 1; # we still need to keep working
        };
    };
};

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In reply to Re: Looking for the first item in the chain by Corion
in thread Looking for the first item in the chain by vagabonding electron

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