pickArg<T> method

T? pickArg<T>(String name, T converter(String))

Implementation

T? pickArg<T>(String name, T Function(String) converter) {
  if (base == null || results.wasParsed(name)) {
    final value = results[name];
    if (value != null) {
      _pickedAny = true;
      return converter(value as String);
    }
  }
  return null;
}