unsigned char array as key in a map (STL - C++)

Question

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
};

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>

? 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?

Answer 1

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