blocks|key|945122|text|NSArray和NSMutableArray在它们被销毁时释放它们的所有对象，因此，如果使用retain和release+(或autorelease)正确管理数组，则其中的对象不会泄漏。但如果有从未发布的数组，它们将会泄漏，其中的所有内容也会泄漏。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|945123|在没有看到代码的情况下，很难提倡只在所有地方添加autorelease，但是对于只在单个函数的上下文中使用的数组(并且没有分配给ivar或静态变量)，答案是肯定的，它们应该是autoreleased。或者更通俗地说，使用像%2BarrayWithCapacity这样的方法创建它们，该方法返回一个已经添加到自动释放池中的对象。|945124|entityMap^0|0|7|8|E|1A|6|1H|7|1R|B|0|O|B|2F|C|33|I|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]|$9|M|A|N|B|C]|$9|O|A|P|B|C]|$9|Q|A|R|B|C]|$9|S|A|T|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|U|8|@$9|V|A|W|B|C]|$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|11|8|@]|D|@]|E|$]]]|I|$]]

<code>NSArray</code> and <code>NSMutableArray</code> release all of their objects when they are destroyed, so if the array is managed properly with <code>retain</code> and <code>release</code> (or <code>autorelease</code>) the objects within will not be leaked. But if there are arrays that are never released, they will leak, along with everything inside them.

Without seeing the code, it's hard to advocate for just adding <code>autorelease</code>s everywhere, but for arrays that are used only in the context of a single function (and not assigned to ivars or static variables), the answer is yes, they should be <code>autoreleased</code>. Or more idiomatically, create them with methods like <code>+arrayWithCapacity</code>, which returns an object that has already been added to the autorelease pool.

blocks|key|2846931|text|您需要+-release或-autorelease任何您-retain、%2Balloc、-copy、%2BallocWithZone:或-copyWithZone:的东西。(而且，如果您保留了一件东西两次，您也需要释放它两次。)|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2846932|当NSMutableArray+(或NSArray、NSSet或NSDictionary和可变子类)对象被取消分配(保留计数为零)时，它将释放它包含的所有内容。当您将对象添加到NSMutableArray时，数组将保留该对象(它不会像某些人声称的那样复制+it+)。|2846933|我向你和你在问题中提到的人强烈推荐Memory+Management+Programming+Guide。|2846934|我希望这个答案能帮助你和其他人。祝好运。:)|2846935|2846936|另外，在构建设置中启用Clang+Static+Analyser。这将在编译时告诉你什么时候会发生泄漏(还有更多)。事实上，当我开始一个新项目时，这是我总是做的第一件事。分析器从来没有骗过我。|2846937|entityMap|0|LINK|mutability|MUTABLE|url|http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/MemoryMgmt/MemoryMgmt.html^0|4|8|D|C|S|7|10|6|17|5|1D|F|1T|E|0|1|E|I|7|Q|5|W|C|2G|E|0|H|Z|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|C]|$9|11|A|12|B|C]|$9|13|A|14|B|C]|$9|15|A|16|B|C]|$9|17|A|18|B|C]|$9|19|A|1A|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|1B|8|@$9|1C|A|1D|B|C]|$9|1E|A|1F|B|C]|$9|1G|A|1H|B|C]|$9|1I|A|1J|B|C]|$9|1K|A|1L|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|1M|8|@]|D|@$9|1N|A|1O|1|1P]]|E|$]]|$1|J|3|K|5|6|7|1Q|8|@]|D|@]|E|$]]|$1|L|3|-4|5|6|7|1R|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|1S|8|@]|D|@]|E|$]]|$1|O|3|-4|5|6|7|1T|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]]]

You need to either <code>-release</code> or <code>-autorelease</code> anything you <code>-retain</code>, <code>+alloc</code>, <code>-copy</code>, <code>+allocWithZone:</code> or <code>-copyWithZone:</code>. (And, if you retain something twice you also need to release it twice.)

When an <code>NSMutableArray</code> (or <code>NSArray</code>, <code>NSSet</code>, or <code>NSDictionary</code> and mutable subclasses) object is dealloc'd (retain count reaches zero), it releases anything it contains. When you add an object to an <code>NSMutableArray</code>, the array retains the object (it does not copy it like some people claim).

I highly recommend the <a href="http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/MemoryMgmt/MemoryMgmt.html" rel="nofollow">Memory Management Programming Guide</a> to both you and the someone you referred to in the question.

I hope this answer helps you and someone. Good luck. :)

<hr>

Also, enable the Clang Static Analyser in the build settings. This will tell you at compile time when a leak is going to happen (and much, much more). In fact, it's the first thing I always do when I start a new project. The analyzer never lied to me.

blocks|key|4636701|text|通常的做法是释放所有初始化的对象。但是在您的例子中，释放数组也应该释放所有对象。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4636702|但这完全取决于你如何使用你的对象！|4636703|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

It is general practice to release all the objects you initialize. But in your case, releasing the array should release all objects as well. 

But it all depends on how you are using your objects !!!

I'm looking at someone's code and I know the general rule is if you have alloc/init, you need to release that memory. He uses a lot of NSMutableArrays, alloc/inits them, but does not release them. Can I simply send the autorelease message to the array that gets created if I do not see any other release/autorelease message getting sent to that array? I basically don't want to get his code to crash and stop working either :P.

With NSMutableArrays, when you send the message addObject and the object in that array increases its retain account, if that array gets released, but the object never gets sent a release or removeObject from the array, is that also a memory leak? Thanks.

Memory Leaks in Objective-C / Arrays

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在看某人的代码，我知道一般的规则是，如果你有alloc/init，你需要释放那个内存。他使用了大量的NSMutableArrays，分配/初始化它们，但没有释放它们。如果我没有看到任何其他释放/自动释放消息发送到创建的阵列，我是否可以简单地将自动释放消息发送到该阵列？我基本上也不想让他的代码崩溃和停止工作。使用NS...

问Objective-C /数组中的内存泄漏
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