OLD | NEW |
1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 // Test foreach (aka. for-in) functionality. | 5 // Test foreach (aka. for-in) functionality. |
6 | 6 |
7 testIterator(List expect, Iterable input) { | 7 testIterator(List expect, Iterable input) { |
8 int i = 0; | 8 int i = 0; |
9 for (var value in input) { | 9 for (var value in input) { |
10 Expect.isTrue(i < expect.length); | 10 Expect.isTrue(i < expect.length); |
(...skipping 17 matching lines...) Expand all Loading... |
28 MyIterable(List<T> values) : this.values = values; | 28 MyIterable(List<T> values) : this.values = values; |
29 Iterator iterator() { | 29 Iterator iterator() { |
30 return new MyListIterator(values); | 30 return new MyListIterator(values); |
31 } | 31 } |
32 } | 32 } |
33 | 33 |
34 class MyListIterator<T> implements Iterator<T> { | 34 class MyListIterator<T> implements Iterator<T> { |
35 final List<T> values; | 35 final List<T> values; |
36 int index; | 36 int index; |
37 MyListIterator(List<T> values) : this.values = values, index = 0; | 37 MyListIterator(List<T> values) : this.values = values, index = 0; |
38 bool hasNext() => index < values.length; | 38 bool get hasNext => index < values.length; |
39 T next() => values[index++]; | 39 T next() => values[index++]; |
40 } | 40 } |
41 | 41 |
42 void main() { | 42 void main() { |
43 testIterator([], []); | 43 testIterator([], []); |
44 testIterator([], new MyIterable([])); | 44 testIterator([], new MyIterable([])); |
45 testIterator([1], [1]); | 45 testIterator([1], [1]); |
46 testIterator([1], new MyIterable([1])); | 46 testIterator([1], new MyIterable([1])); |
47 testIterator([1,2,3], [1,2,3]); | 47 testIterator([1,2,3], [1,2,3]); |
48 testIterator([1,2,3], new MyIterable([1,2,3])); | 48 testIterator([1,2,3], new MyIterable([1,2,3])); |
(...skipping 22 matching lines...) Expand all Loading... |
71 | 71 |
72 // Using the same variable (showing that the expression is evaluated | 72 // Using the same variable (showing that the expression is evaluated |
73 // in the outer scope). | 73 // in the outer scope). |
74 int result = 0; | 74 int result = 0; |
75 var x = [1,2,3]; | 75 var x = [1,2,3]; |
76 for (var x in x) { | 76 for (var x in x) { |
77 result += x; | 77 result += x; |
78 } | 78 } |
79 Expect.equals(6, result); | 79 Expect.equals(6, result); |
80 } | 80 } |
OLD | NEW |