How to Make a Basic Finite State Machine in Objective-C

Question

I am attempting to build an FSM to control a timer in (iphone sdk) objective c. I felt it was a necessary step, because I was otherwise ending up with nasty spaghetti code c

Answer 1

When you use a protocol as a type-modifier, you can provide a comma-separated list of protocols. So all you need to do to get rid of the compiler warning is add NSObject to the protocol list like so:

- (void)setupTimer:(id) timerState {

    // Create scheduled timers, etc...
}