NSString的内存问题 [英] Memory issue of NSString

问题描述

我遇到了NSString问题。

I have got a problem with NSString.

NSString* str = [[NSString alloc] initWithString:@"Hello world"];

在上面的代码中，我是否需要释放对象str？根据规则，此对象是使用alloc创建的，因此应使用release方法显式释放它。但是，当我没有明确释放它时，我在Instruments中找不到任何内存泄漏。
用NSNumber替换NSString时，会发生内存泄漏。

In the code above, do I need to release the object str? According to the rule, this object is created with alloc, so it should be explicitly released with the release method. However, I can't find any memory leaks in Instruments when I don't explicitly release it. When the NSString is replaced with NSNumber, the memory leaks happen.

有人可以给我一些建议吗？谢谢。

Can anyone give me some suggestions? Thanks.

推荐答案

是的，您确实需要释放它。工具，泄漏，ObjectAlloc和朋友之类的工具并非万无一失；同样，因为您使用了常量字符串来创建实例，所以很可能不会发生泄漏。但是，尽管如此，如果您 + alloc 一个对象，还应该 -release 来确保该对象不会

Yes, you do need to release it. Tools such as Instruments, Leaks, ObjectAlloc and friends aren't infallible; also because you've used a constant string to create the instance it is entirely likely that no leak occurs. But nonetheless, if you +alloc an object you should also -release it to make sure that the object doesn't leak, so you do indeed need to release this object.

我通常到可可内存管理文章的链接集： http://iamleeg.blogspot.com/2008/12/cocoa-memory-management.html

My usual set of links to Cocoa memory management articles: http://iamleeg.blogspot.com/2008/12/cocoa-memory-management.html

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