问题描述
推荐答案
仅当您希望人们每次都订购该枚举并且很难弄清楚如何执行此操作时，或者您可以提供一个实现该功能的集合时，界面，可以有效地对其内容进行排序，并与可以识别您的收藏的扩展方法配对.
Only if you expect people to order that enumerable every time and would find it hard to figure out how to do this OR if you can provide a collection that implements that interface that can efficiently order its contents and is paired with an extension method that is aware of your collection.
最佳选择是返回特定的集合类型(有关详细信息，请参阅Richter).如果有一个简单的可枚举的对象，则100个对象中有99个可以使用标准linq扩展方法对其进行排序.
Best option is to return a specific collection type (see Richter for details on that). 99 times out of 100 whoever gets even a simple enumerable can use the standard linq extension methods to order it if they want.
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