namespace;
include rt, actor;
typecheck on;
type Operation = int(int);
int handle(Operation operation) { return operation(3); }
fn main() {
 actor.Actor<Operation,int>* a = rt.new(actor.Actor<Operation,int>);
 a.spawn(handle); let result = 0; a.recv(fn(int n) { result = n; return 0; });
 char* text = rt.new(char, 3); text[0] = 'a'; text[1] = 'b'; let offset = 7; float scale = 2.0;
 Operation operation = fn:int(int n) { if (scale == 2.0) return n + offset + rt.len_w(text); return -1; };
 a.send(operation); a.await(); rt.put_n(result); rt.put_c(10); a.close(); return 0;
}