从词典中的词典中删除项目 [英] Removing an item from a Dictionary within a Dictionary

问题描述

说我有一本字典

<br />
Dictionary<int, Dictionary<int, String>><br />

从嵌套"字典中删除项目的最佳方法是什么?

例如:

What is the best way to remove an item from the "nested" dictionary?

For e.g.:

Dictionary<int, Dictionary<int, string>> outer = new Dictionary<int, Dictionary<int, string>>();

然后，该词典中填充了一些东西，我想删除现有的项目 outer [1] [2] ，我通常会这样做:

This Dictionary is then populated with stuff and I want to remove the existing item outer[1][2], I would usually do:

Dictionary<int, string> inner = outer[1];
outer.Remove(1);
inner.Remove(2);
outer.Add(1, inner);

有没有更好/更短/更直接的方法?

Is there a better/shorter/more straightforward way?

推荐答案

从其中删除项目时无需删除并重新添加内部字典，因此您可以做:

There is no need to remove and re-add the inner dictionary when removing an item from it, so you can just do:

// To remove outer[1][2]
outer[1].Remove(2);

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