| // 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. |
| |
| /// @assertion Iterable<E> skipWhile(bool test(E value)) |
| /// ... |
| /// The filtering happens lazily. |
| /// @description Checks that the filtering happens lazily and function test is |
| /// invoked when iterable is iterated. |
| /// @author ngl@unipro.ru |
| |
| |
| import "dart:typed_data"; |
| import "../../../Utils/expect.dart"; |
| |
| Int32x4 i32x4(n) => new Int32x4(n, n, n, n); |
| |
| main() { |
| var counter = 0; |
| bool test(e) { |
| counter++; |
| return e.x == 0; |
| } |
| var list = [i32x4(0), i32x4(1), i32x4(2), i32x4(6), i32x4(4), i32x4(5)]; |
| var l = new Int32x4List.fromList(list); |
| |
| var res = l.skipWhile(test); |
| Expect.equals(0, counter); |
| res.elementAt(0); |
| Expect.equals(2, counter); // two elements were tested |
| } |