There are several dictionary types in C++, but each has different performance characteristics and they all have good support. Thanks to the efforts to make buil

There are several dictionary types in C++, but each has different performance characteristics and they all have good support. Thanks to the efforts to make built-in types and UDTs equal, Qt's map was for instance implemented as a skip list and was just as usable as the standard library types. Nowadays it's a RB Tree. Go's strategy of picking hash maps and not offering the mechanisms of building your own data structures with the same syntax affordances and performance characteristics makes it easy to jump in and hard to make progress if you hit a wall with the built-ins.