Language/Overview/Privacy/private_and_public_t15.dart

// Copyright (c) 2011, 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.

/// @assertion Dart supports two levels of privacy: public and private. 
/// A declaration is private iff its name is private, otherwise it is public.
/// A name q is private iff any one of the identifiers that comprise q is 
/// private, otherwise it is public.
/// An identifier is private iff it begins with an underscore (the _ character) 
/// otherwise it is public.
/// A declaration m is accessible to library L if m is declared in L or if m is 
/// public.
/// @description Checks that type parameter names can begin with an underscore 
/// and are still accessible in the appropriate scope.
/// @author iefremov

class G<_x, _$, __> {
  _x? x = null;
  _$? y = null;
  __? z;
}

class G2<A, B, C> extends G<A, B, C> {}
class G3<_X> extends G<_X, _X, _X>{}

main() {
  new G<int, String, double>();
  new G2<int, String, double>();
  new G3<int>();
}