Convert header + row data to Dart df

parsedCsvToDataframe.dart

import 'package:df/df.dart';
import 'package:grizzly_io/io_loader.dart';   // to parse CSV string

DataFrame _convertHeaderRowDataToDf(List<List<String>> headerRowData) {
  List<String> headers = headerRowData[0];
  List<Map<String, Object?>> mappedData = [];
  for (int i = 1; i < headerRowData.length; i++) {
    Map<String, Object?> mappedRow = {};
    headerRowData[i].asMap().forEach((int rowIndex, value) {
      mappedRow[headers[rowIndex]] = value;
    });
    mappedData.add(mappedRow);
  }
  return DataFrame.fromRows(mappedData);
}

DataFrame df = _convertHeaderRowDataToDf(parseCsv(utf8.decode(<csv bytes>)));