NSOperationQueue,NSOperation
我是 iPhone 新手。我在哪里获得 NSOperationQueue、NSOperation 的示例？NSOperationQueue、NSOperation 相对于线程有什么优势？
谢谢
I m new to iphone. where i get examples for NSOperationQueue, NSOperation?
What is the advantage of NSOperationQueue, NSOperation over thread?
Thanks
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阅读文档。他们非常擅长解释和举例
http://developer.apple.com/library/ios/#documentation/General/Conceptual/ConcurrencyProgrammingGuide/OperationObjects/OperationObjects.html%23//apple_ref/doc/ uid/TP40008091-CH101-SW1
NSOperation 比 NSThread 更容易管理。
Read the docs. They are really good at explaining and giving examples
http://developer.apple.com/library/ios/#documentation/General/Conceptual/ConcurrencyProgrammingGuide/OperationObjects/OperationObjects.html%23//apple_ref/doc/uid/TP40008091-CH101-SW1
NSOperation is easier to manage than NSThread.
更高层次的抽象：也就是说，比
NSThreads更容易编程，并且比NSThread控制少一点。Higher level of abstraction: That is, easier to program than
NSThreadsand a little bit less control thanNSThread.NSOperationQueue：NSOperationQueue对象是处理NSOperation类类型的对象的队列。NSOperationQueue处理并管理已添加到其中的所有NSOperation对象（任务）的执行。执行是在应用程序的主线程中进行的。当 NSOperation 对象被添加到队列中时，它会立即执行，并且在完成之前不会离开队列。可以取消任务，但在完成之前不会将其从队列中删除。NSOperation：NSOperation旨在处理或多或少的批处理操作。简而言之，一个 NSOperation 对象代表一个任务，包括与该任务相关的数据和代码。
NSOperation 类是一个抽象类，因此不能直接在程序中使用。相反，提供了两个子类：
NSInitationOperation类和NSBlockOperation类。当然，了解更多详细信息 Apple iOS Developer Library 是最好的选择，下面的链接也将有助于了解更多关于它和 NSOperationQueue、NSOperation VS 线程的信息。
NSThread 与 NSOperationQueue 与 ???在 iPhone 上
http://www.raywenderlich .com/19788/how-to-use-nsoperations-and-nsoperationqueues
NSOperationQueue:An
NSOperationQueueobject is a queue that handles objects of theNSOperationclass type.The
NSOperationQueuehandles and manages the execution of all theNSOperationobjects (the tasks) that have been added to it. The execution takes place with the main thread of the application. When an NSOperation object is added to the queue it is executed immediately and it does not leave the queue until it is finished. A task can be cancelled, but it is not removed from the queue until it is finished.NSOperation:NSOperationis designed to handle more-or-less batch operations.An
NSOperationobject, simply phrased,represents a single task, including both the data and the code related to the task.The
NSOperationclass is an abstract one so it cannot be used directly in the program. Instead, there are two provided subclasses, theNSInvocationOperationclass and theNSBlockOperationclass.OfCourse for more details Apple iOS Developer Library is the best option and the link below would also help to know more about it and NSOperationQueue, NSOperation VS thread.
NSThread vs. NSOperationQueue vs. ??? on the iPhone
http://www.raywenderlich.com/19788/how-to-use-nsoperations-and-nsoperationqueues