C++ Hash function for string in unordered_map

Question

It seems as if C++ does not have a hash function for strings in the standard library. Is this true?

What is a working example of using a string as a key in an unordered_

Answer 1

Actually, there is std::hash

But there it is how you can use another hash function:

struct StringHasher {
    size_t operator()(const std::string& t) const {
          //calculate hash here.
    }
}

unordered_map