map method
Apply a transform to every row. Returns new CsvTable.
Implementation
CsvTable map(CsvRow Function(CsvRow row) transform) {
final headerMap = buildHeaderMap();
final mapped = rawData.map((r) {
final result = transform(CsvRow(r, headerMap));
return List<dynamic>.from(result);
}).toList();
return CsvTable.internal(List<String>.from(headers), mapped);
}