初始化/清除字符串变量可可的最佳方法 [英] Best way to initialise / clear a string variable cocoa

问题描述

我有一个例程，可以通过循环解析文本.在每条记录的末尾，我需要清除我的字符串变量，但我读到someString = @"实际上只是指向新的字符串&导致内存泄漏.

I have a routine that parses text via a loop. At the end of each record I need to clear my string variables but I read that someString = @"" actually just points to a new string & causes a memory leak.

处理此问题的最佳方法是什么?我应该在迭代之间使用可变字符串vars还是使用setString:@"吗?

What is the best way to handle this? Should I rather use mutable string vars and use setString:@"" between iterations?

推荐答案

在这种情况下，必须小心创建NSString :(工厂方法)或(分配init或(使用@").)

You have to be careful in which case you create the NSString: (factory method) or (alloc init or (using @"").

如果使用@"，它是一个常量字符串，请参见此处:

If you use @"", it is a constant string, see here: Constant NSString

如果使用[[NSString alloc] init]，则需要将其释放.只需执行[someString release].

If you use [[NSString alloc] init], you need to release it.You just need to do [someString release].

如果您使用[NSString stringWithFormat:@"]之类的内容，则无需发布它，因为它已在运行时自动发布

If you use something like [NSString stringWithFormat:@""], you don't need to release it because it is already auto released by runtime

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