基于对象的属性，在 NSSet / NSMutableSet 中排序对象的最有效方法是什么集合？现在我的方式是通过迭代每个对象，将它们添加到 NSMutableArray ，并排序该数组与 NSSortDescriptor 。
What's the most efficient way to sort objects in an NSSet/NSMutableSet based on a property of the objects in the set? Right now the way I am doing it is by iterating through each object, add them to a NSMutableArray, and sort that array with NSSortDescriptor.
推荐答案尝试使用
[[mySet allObjects] sortedArrayUsingDescriptors:descriptors];编辑：对于iOS≥4.0和Mac OS X≥10.6，直接使用
Edit: For iOS ≥ 4.0 and Mac OS X ≥ 10.6 you can directly use
[mySet sortedArrayUsingDescriptors:descriptors];