How to use and where to use NSOperation and NSOperationQueue> [duplicate]

This question already has answers here: Closed 11 years ago.

Possib开发者_运维百科le Duplicate:

NSOperation on the iPhone

I am new to Objective-c Iphone, and I came to know about NSOperation and NSOperationQueue. Where to use this and how can I use this? Can anyone give me explanations with any small example program?

Thanks in advance...

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This will surely help you - http://www.icodeblog.com/2010/03/04/iphone-coding-turbo-charging-your-apps-with-nsoperation/

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A quick Google turned up:

• The Concurrency Programming Guide, dealing with operations and threading
• The NSOperationQueue class reference
• The (aptly named) NSOperationSample example project, straight from Apple, and
• A descriptive post from the excellent blog "Cocoa Is My Girlfriend," with a small, well-explained example, complete with code snippets.