| // 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> takeWhile(bool test(E value)) |
| /// ... |
| /// The elements can be computed by stepping through iterator until an element is |
| /// found where test(element) is false. At that point, the returned iterable |
| /// stops (its moveNext() returns false). |
| /// @description Checks that the elements can be computed by stepping through |
| /// iterator until an element is found where test(element) is false. At that |
| /// point, the returned iterable stops (its moveNext() returns false). |
| /// @author ngl@unipro.ru |
| |
| |
| import "dart:typed_data"; |
| import "../../../Utils/expect.dart"; |
| |
| Int32x4 i32x4(n) => new Int32x4(n, n, n, n); |
| |
| equal(o1, o2) => o1.x == o2.x && o1.y == o2.y && o1.z == o2.z && o1.w == o2.w; |
| |
| main() { |
| bool test(e) => e.x < 5; |
| var list = [i32x4(0), i32x4(1), i32x4(2), i32x4(6), i32x4(4), i32x4(5)]; |
| var l = new Int32x4List.fromList(list); |
| var res = l.takeWhile(test); |
| var it = res.iterator; |
| var i = 0; |
| while (it.moveNext()) { |
| Expect.isTrue(equal(l[i++], it.current)); |
| } |
| Expect.isFalse(test(l[i])); |
| |
| res = l.takeWhile((e) => e.x > 9); |
| Expect.isTrue(res.isEmpty); |
| } |