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).substring(0, 1)
      };
    });
  });
  final filename = 'file.txt';
  new File(filename).writeAsString(jsonEncode(result)).then((File file) {
    // Do something with the file.
  });
}