The following code example is taken from the book
C++23 - The Complete Guide
by Nicolai M. Josuttis,
Leanpub, 2026
The code is licensed under a
Creative Commons Attribution 4.0 International License.
// raw code
#include <iostream>
#include "subscript.hpp"
int main()
{
Data dat;
dat.insert("game", {"tic", "tac", "toe"});
dat.insert("ok", {"OK"});
dat.insert("end", {"the", "last"});
std::cout << dat["game", 1, 1] << '\n';
}