| /* |
| * 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<T> map<T>(T f(E e)) |
| * ... |
| * The transformed elements will not be cached. Iterating multiple times over |
| * the returned Iterable will invoke the supplied function f multiple times on |
| * the same element. |
| * @description Checks that iterating multiple times over the returned Iterable |
| * will invoke the supplied function f multiple times on the same element. |
| * @author ngl@unipro.ru |
| */ |
| |
| import "dart:typed_data"; |
| import "../../../Utils/expect.dart"; |
| |
| Float64x2 f64x2(v) => new Float64x2(v, v+1); |
| |
| main() { |
| var count = 0; |
| f(e) { |
| count++; |
| return e; |
| } |
| var l = new Float64x2List.fromList( |
| [f64x2(5.0), f64x2(7.0), f64x2(9.0), f64x2(11.0)] |
| ); |
| var res = l.map(f); |
| |
| Expect.equals(0, count); |
| res.elementAt(0); |
| Expect.equals(1, count); |
| res.elementAt(0); |
| Expect.equals(2, count); |
| res.elementAt(1); |
| Expect.equals(3, count); |
| } |