main function

dynamic main()

Implementation

main() {
  var result = {};
  citysData.forEach((k, v) {
    result[k] = {};
    Map temp = v;
    temp.forEach((k2, v2) {
      result[k]
          [k2] = {'name': v2, 'alpha': PinyinHelper.getFirstWordPinyin(v2)[0]};
    });
  });
  final filename = 'file.txt';
  new File(filename).writeAsString(jsonEncode(result)).then((File file) {
    // Do something with the file.
  });
}