Uid

Generic immutable unique ID class, meaning it's an abstraction of UUIDs. Used to uniquely identify things.

The class has a generic type T to allow creating type-safe IDs, like Uid<Message> or Uid<Person>.

For example, this does not compile:

fun compileTimeTypeSafetyExamples() {
    var idInt = Uid.new<Int>()
    var idLong = Uid.new<Long>()
    idInt == idLong              // This is OK.
    idInt = idLong               // This does not compile.
}

The class represents UUIDs as Strings internally, to avoid lots of UUID to String conversions. This makes the class considerably faster in use than the regular UUID class.