In fairness to Go, there is a precedent for built-ins to be "special" in ways like this. So e.g. while there are no user-defined generic data types, the built-i

In fairness to Go, there is a precedent for built-ins to be "special" in ways like this. So e.g. while there are no user-defined generic data types, the built-in collection types like array are generic. The Zen of Rust is very much in the direction that standard operators shouldn't be more "special" than necessary, and a lot of fundamentals become "library-able" or at least library-extensible. Go simply doesn't take this approach. It's a more opinionated language, and it some cases that means you get the tool it makes for you, rather than getting to craft your own tool for yourself.