Library  Semaphores, efficient atomic waiting, latches, and barriers  std::atomic_ref  Designated Initializers  Spaceship Operator <=>  Range-based for Loop Initializer  Non-Type Template Parameters while std::atomic always copies the value it is providedMany More New Features…47 Designated Initializers  Designated initialization of aggregates  E.g.: struct Data { int anInt { 0 }; std::string <=>  vector, string, map, set, sub_match, …  Example:53 Range-based for Loop Initializer  Initializers for switch statements (C++17): struct Foo { int value; int result; }; Foo GetData() { return