Arrow func

example/src/main.nub

@@ -34,7 +34,7 @@ func main(args: []cstring): i64
     }
 
     human.print()
-    print_result(12, func(num) { return num == 12 })
+    print_result(12, func (num) => num == 12)
 
     let x: cstring = "test"