Sean Baxter on Twitter: "Here a std::map<std::string, int> is ported from compile time to runtime. Dynamic pack expansion into a braced initializer allows us to port the key through the @string extension.
Map in C++ Standard Template Library (STL) with Print Example
How to Sort Golang Map By Keys or Values? - GeeksforGeeks
Write a method that, given two maps, yields a map | Chegg.com