LanguageFeatures/Extension-methods/tearoffs1.lib.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.
 */
/**
 * @author sgrekhov@unipro.ru
 */

library tearoff1_lib;

class X {
  Object val;
  X(this.val);

  String toString() => val.toString();
}

extension ExtendedList on List {
  int foo<T extends X>(T x) => x.toString().length;
}

extension ExtendedString on String {
  String bar(String s) => s + ":" + this;
}

int Function(X) funcFoo = [1, 2, 3].foo;

String Function(String) funcBar = "Lily was here".bar;

String Function(String) funcBar2 = ExtendedString("Run, Forrest, run").bar;