关于ios6中的release

[wangyangkobe]

我在读这篇文章：
https://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/MemoryMgmt/Articles/mmPractical.html#//apple_ref/doc/uid/TP40004447-1000810

里面有这么一段话：

引用

Collections Own the Objects They Contain

When you add an object to a collection (such as an array, dictionary, or set), the collection takes ownership of it. The collection will relinquish ownership when the object is removed from the collection or when the collection is itself released. Thus, for example, if you want to create an array of numbers you might do either of the following:

NSMutableArray *array = <#Get a mutable array#>;
NSUInteger i;
// ...
for (i = 0; i < 10; i++) {
NSNumber *convenienceNumber = [NSNumber numberWithInteger:i];
[array addObject:convenienceNumber];
}
In this case, you didn’t invoke alloc, so there’s no need to call release. There is no need to retain the new numbers (convenienceNumber), since the array will do so.

NSMutableArray *array = <#Get a mutable array#>;
NSUInteger i;
// ...
for (i = 0; i < 10; i++) {
NSNumber *allocedNumber = [[NSNumber alloc] initWithInteger:i];
[array addObject:allocedNumber];
[allocedNumber release];
}
In this case, you do need to send allocedNumber a release message within the scope of the for loop to balance the alloc. Since the array retained the number when it was added by addObject:, it will not be deallocated while it’s in the array.

To understand this, put yourself in the position of the person who implemented the collection class. You want to make sure that no objects you’re given to look after disappear out from under you, so you send them a retain message as they’re passed in. If they’re removed, you have to send a balancing release message, and any remaining objects should be sent a release message during your own dealloc method.

但是我自己在IOS6中写个小程序，

NSMutableArray *array = [NSMutableArray array]

for (i = 0; i < 10; i++) {
    NSNumber *allocedNumber = [[NSNumber alloc] initWithInteger:i];
    [array addObject:allocedNumber];
}

根本不需要调用

autorelease

或者

release

，求详解。

[ArcRain]

你的工程是ARC的吧？ARC的话不需要调用。

[wangyangkobe]

引用 1 楼 dream238 的回复:

你的工程是ARC的吧？ARC的话不需要调用。

是不是在ios6中，如果使用ARC，程序猿就根本不需要考虑内存管理的事情。

[ArcRain]

引用 2 楼 wangyangkobe 的回复:

是不是在ios6中，如果使用ARC，程序猿就根本不需要考虑内存管理的事情。

是的，但是如果ARC使用的不好，出现内存方面的问题，查起来会比较麻烦...

[wangyangkobe]

引用 3 楼 dream238 的回复:

[quote=引用 2 楼 wangyangkobe 的回复:] 是不是在ios6中，如果使用ARC，程序猿就根本不需要考虑内存管理的事情。

是的，但是如果ARC使用的不好，出现内存方面的问题，查起来会比较麻烦...[/quote] 好的，谢谢，那你有没什么使用心得？

[ArcRain]

引用 4 楼 wangyangkobe 的回复:

好的，谢谢，那你有没什么使用心得？

ARC没用过，习惯了手动控制。之前看同事查ARC工程的内存问题，废了很大劲。