在C＃中的元组列表中找到并删除重复项 [英] Find and Deletes Duplicates in List of Tuples in C#

问题描述

我需要找到并从一个元组的列表中删除重复项。
基本上，我的结构是由这样的：

I need to find and remove the duplicates from a List of tuples. Basically, my structure is made like that:

List<Tuple<string, string>> myList = new List<Tuple<string, string>>();

****

private void FillStructure()
{
     myList.Add(Tuple.Create<string, string>("A", "B"));
     myList.Add(Tuple.Create<string, string>("A", "C"));
     myList.Add(Tuple.Create<string, string>("C", "B"));
     myList.Add(Tuple.Create<string, string>("C", "B"));    // Duplicate
     myList.Add(Tuple.Create<string, string>("A", "D"));

     FindAndRemoveDuplicates(myList);
}

private void FindAndRemoveDuplicates(List<Tuple<string, string>> myList)
{
        // how can I perform this ?
}

我不能使用字典，因为我可以有相同的密钥，但不同值！
预先感谢您

I can't use a Dictionary because I can have the same key but different values! Thank you in advance

推荐答案

您可以使用的 鲜明的（） LINQ的方法是这样的：

You can use Distinct() method of LINQ, like this:

myList = myList.Distinct().ToList();

请注意，这将重新创建列表，而不是代替删除重复项。

Note that this would re-create the list, rather than removing the duplicates in place.

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