The received message. If T.length is greater than one, the message will be packed into a std.typecons.Tuple.
MessageMismatch if a message of types other than T is received.
auto tid = spawn( (Tid self) { assert(self.receiveOnly!int == 42); }); send(tid, 42);
auto tid = spawn( (Tid self) { assert(self.receiveOnly!string == "text"); }); send(tid, "text");
struct Record { string name; int age; } auto tid = spawn( (Tid self) { auto msg = self.receiveOnly!(double, Record); assert(msg[0] == 0.5); assert(msg[1].name == "Alice"); assert(msg[1].age == 31); }); send(tid, 0.5, Record("Alice", 31));
Receives only messages with arguments of types T.