Asynchronous vs Synchronous vs Threading in an iPhone App

Question

I\'m in the design stage for an app which will utilize a REST web service and sort of have a dilemma in as far as using asynchronous vs synchronous vs threading. Here\'s the sce

Answer 1

Why can't you use an asynchronous request like so:

- (NSArray *)users {
     if(users == nil && !didLaunchRequestAlready )
        users = do_async_request // Looks good to me
     return users;
 }

Asynchronous is absolutely the only option - the only real question is if you want to start using separate threads, or if you want to just use the asynch calls. Start there and look at managing threads if you really need to.