LanguageFeatures/Extension-methods/member_conflict_resolution_t02.dart

// Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

// @dart = 2.9

/// @assertion An extension can declare a member with the same (base-)name as a
/// member of the type it is declared on. This does not cause a compile-time
/// conflict, even if the member does not have a compatible signature.
///
/// @description Check that it is no compile error if an extension declares a
/// member with the same (base-)name as a member of the type it is declared on
/// but with the different arguments (but it is a compile error if we try to call
/// it)
/// @author sgrekhov@unipro.ru

extension ExtendedList<T> on List<T> {
  void add(T val, {int count = 1}) {
  }
}

main() {
  List<String> list = ["Lily", "was"];
  list.add("here", count: 2);           //# 01: compile-time error
}