// Copyright (c) 2017, 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. | |
class C<T extends num Function(num)> { | |
final T func; | |
C(this.func); | |
} | |
main() { | |
var c = new C<int Function(int)>((int x) => x * 2); | |
print(c.func(21)); | |
} |