C++ Hash function for string in unordered_map
c++, c++11, key, string, unordered-map
Solution
C++ STL provides template specializations of `std::hash` for the various string classes. You could just specify `std::string` as key type for `std::unordered_map`:
#include <string>
#include <unordered_map>
int main()
{
std::unordered_map<std::string, int> map;
map["string"] = 10;
return 0;
}
Problem
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_map that will work with any c++ compiler?