| /* |
| * 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. |
| */ |
| /** |
| * @assertion If both the extension and the method is generic, then inference |
| * must infer the extension type parameters first, to figure out whether the |
| * extension applies, and only then start inferring method type parameters. As |
| * mentioned above, the inference is similar to other cases of chained inference. |
| * @description Check that compile error is thrown if parameter type is |
| * statically incorrect. |
| * @compile-error |
| * @author iarkh@unipro.ru |
| */ |
| |
| |
| int count(String string, int length) => length + string.length; |
| |
| extension SuperList<T> on List<T> { |
| R foldRight<R>(R base, R combine(T element, R accumulator)) { |
| for (int i = this.length - 1; i >= 0; i--) { |
| base = combine(this[i], base); |
| } |
| return base; |
| } |
| } |
| |
| List<List> toTest = [[1, 2, 3]]; |
| |
| main() { |
| toTest.foldRight(0, count); |
| } |