!7

cmodule StandardFunction {
  switchable S functionName;
  transient DynamicCallable f;
  transient Throwable error;
  
  start {
    onChange(r { setModuleName("Function " + functionName); });
    thread { loadFunction(); }
  }
  
  void loadFunction() q {
    try {
      f = loadFunctions_cached(functionName);
    } catch {
      error =
    }
  }
  
  // API
  
  S functionName() { ret functionName; }
  
  DynamicCallable callTheFunction(O... args) {
    while (f == null && error == null) sleep(10);
    if (error != null) throw rethrow(error);
    ret callF(f, args);
  }
}