Every language doesn't have something. A better response would have tied those ommisions into GUI development. A set in Go is a hash, queues are channels. You c

Every language doesn't have something. A better response would have tied those ommisions into GUI development. A set in Go is a hash, queues are channels. You can range over both. I've never used custom tree iteration in Java to build an Android app and I've managed to do okay.