C++11 Simplest way to store multiple data types for value(int and string) in map<key, value>?

Question

I want to have a map that uses

• string for key
• int OR string for value

like this:

std::map<std::string, SOME TYPE> myMap;
myMap["first_key"]  = 10;
myMap["second_key"] = "stringValue";

What is the SIMPLEST way to do such thing?

added) I am looking for solution that works in c++11

Answer 1

In c++17, you may use std::variant<int, std::string>, prior to this, you may use the one from boost:

using IntOrString = std::variant<int, std::string>;
std::map<std::string, IntOrString> myMap;
myMap["first_key"]  = 10;
myMap["second_key"] = "stringValue";