Linq to Objects:GroupBy 是否保留元素的顺序? [英] Linq to Objects: does GroupBy preserve order of elements?

问题描述

从 LINQ to Objects 的 Enumerable.GroupBy 是否保留组中元素的顺序?

Does Enumerable.GroupBy from LINQ to Objects preserve order of elements in the groups?

推荐答案

在 MSDN:是的.

IGrouping 对象是根据产生每个 IGrouping 的第一个键的源中元素的顺序按顺序生成的.代码>.分组中的元素按照它们在源中出现的顺序产生.

The IGrouping<TKey, TElement> objects are yielded in an order based on the order of the elements in source that produced the first key of each IGrouping<TKey, TElement>. Elements in a grouping are yielded in the order they appear in source.

这篇关于Linq to Objects:GroupBy 是否保留元素的顺序?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！