New code: immutable nfields = header.count('\t'); ... output.writeln(cycle("\t-").take(2 * nfields));
output.writeln("\t-".repeat(nfields).join);
New code: immutable nfields = header.count('\t'); ... output.writeln(cycle("\t-").take(2 * nfields));
output.writeln("\t-".repeat(nfields).join);