mark

• Here's the core of the main program:

        my $seq = seq_read($seqname);
        if ($op eq 'show') {            # special case
          print join "\n", $seq->elements, '';
          exit 0;
        } elsif ($op eq 'delete') {     # another
          seq_delete($seqname);
          exit 0;
        }
        $seq = $seq->$op(\@ARGV);
        seq_write($seqname, $seq);

• $seq is a Set::IntSpan method

• $seq->$op calls a method to calculate a new Set::IntSpan

• $op is exactly the value from the %canonical table

• delete must be special cased because it destroys the sequence completely

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Copyright © 2005 M. J. Dominus