无符号char数组作为映射中的键(STL-C ++) [英] unsigned char array as key in a map (STL - C++)

问题描述

有一些与此相关的帖子，但我需要澄清一些内容. 我的程序中有一个结构，其字段之一是固定大小的数组(16).这是上述结构的简化示例:

There are some posts related to this, but I need to clarify something. I have a structure in my program, and one of its fields is a fixed-size array (16). This is a reduced example of the mentioned structure:

my_struct{
     unsigned char my_field[16];
     ....
     // some more fields here
};

我想将此字段用作地图的键，这是我的问题. -有没有办法使用类似

I want to use this field as a key for a map, and here is my question. - Is there a way to use a map like

map<unsigned char[16], some_defined_structure>

?否则，这将是以某种方式复制此char数组以适合之后要插入到地图中的数组或矢量结构的最佳方法吗?

? Otherwise, which would be the best way to somehow copy this char array to fit an array or vector structure to insert in the map afterwards?

推荐答案

unsigned char[16]不适合用于键映射.不符合要求 但是std::array<unsigned char,16>确实如此.

unsigned char[16] is not a suitable type for key map. it does not meet the requirements But std::array<unsigned char,16> does.

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