@autoreleasepool 代替 NSAutoreleasepool

@autoreleasepool 代替 NSAutoreleasepool 

新的xcode的holle world开始给人的印象就是简洁了，可是到底哪里发生了变化呢？原来是原先的NSAutoreleasepool被@autoreleasepool所替代。一下来自苹果官方手册，我做了一下翻译。


NSAutoreleasePool 类 参考手册


继承自
NSObject
Conforms to
NSObject (NSObject)
Framework
/System/Library/Frameworks/Foundation.framework
Availability
Available in Mac OS X v10.0 and later.
相关教程
Advanced Memory Management Programming Guide
声明
NSAutoreleasePool.h
Related sample code
CocoaSpeechSynthesisExample
OpenCL NBody Simulation Example
SpellingChecker CarbonCocoa Bundled
SpellingChecker-CarbonCocoa
SpellingChecker-CocoaCarbon


概览
The NSAutoreleasePool class is used to support Cocoa’s reference-counted memory management system. An autorelease pool stores objects that are sent a release message when the pool itself is drained.


Important: If you use Automatic Reference Counting (ARC), you cannot use autorelease pools directly. Instead, you use @autoreleasepool blocks instead. For example, in place of:
 


NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init;


// Code benefitting from a local autorelease pool.


[pool release];
you would write:
 
 


@autoreleasepool {


    // Code benefitting from a local autorelease pool.


}
@autoreleasepool blocks are more efficient than using an instance of NSAutoreleasePool directly; you can also use them even if you do not use ARC