是C#List< T>上元素的顺序吗?确定性的? [英] Is the order of elements on a C# List<T> deterministic?
问题描述
我一直想别的,但是最近我需要知道:
I've always thought otherwise, but recently I had the need to know:
如果我按特定顺序将元素添加到列表中,是否可以保证始终以相同的顺序查找元素?
If I add elements to a list in a certain order, am I guaranteed to find then always on the same order?
谢谢!
推荐答案
是;您可以控制 List< T>
的顺序.
Yes; you control the ordering of a List<T>
.
您可以假定带有 list [int]
索引器的任何.NET集合都具有可预测的顺序;否则,数字索引将毫无意义.相比之下,不可能将数字索引与 Dictionary< K,V>
一起使用,并且在枚举字典时,不能保证其顺序.
You can assume that any .NET collection with a list[int]
indexer has a predictable ordering; otherwise, the numerical index wouldn't make any sense. By comparison, it's not possible to use a numerical index with a Dictionary<K,V>
, and when you enumerate a dictionary, the ordering isn't guaranteed.
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