Objective-c – NSOperation on the iPhone


I've been looking for some concrete scenarios for when NSOperation on the iPhone is an ideal tool to use in an application. To my understanding, this is a wrapper around writing your own threaded code. I haven't seen any Apple demo apps using it, and I'm wondering if I'm missing out on a great tool instead of using NSThread.

The ideal solution here would be to describe a use-case scenario for NSOperation and how you would use it to solve your problem(s).

Best Solution

Cocoa Is My Girlfriend has a good tutorial on the use of NSOperation and NSOperationQueue. The tutorial makes use of NSOperation to download several webpages simultaneously in separate threads.

Also, see this article from Mac Research.