这行代码是否正确重新内存管理（重新 NSDate 复制）？
这行代码是否正确重新内存管理（重新 NSDate 复制）？
我有一个带有属性的类：
@property (nonatomic, retain) NSDate* start;
@property (nonatomic, retain) NSDate* coreWeStart;
现在在 init 方法中，假设已经设置了 self.start，将 coreWeStart 重新设置为同一日期是否正确：
self.coreWeStart= [[self.start copy] autorelease];
只需仔细检查我的理解：
- 需要一个“副本”，否则它会引用到同一个对象并且
- 需要自动释放，就像我做的复制一样，
谢谢
is this line of code correct re memory management (re NSDate copy)?
I have a class with properties:
@property (nonatomic, retain) NSDate* start;
@property (nonatomic, retain) NSDate* coreWeStart;
Now in the init method, assuming self.start is already set, is this correct re setting the coreWeStart to the same date:
self.coreWeStart= [[self.start copy] autorelease];
Just double checking my understanding that:
- needs a 'copy' as otherwise it would refer to the same object and
- needs an autorelease as I did do a copy
thanks
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我会说有点，但仍然可以做得更好。具体来说，您可以执行以下操作：
...然后：
...用更少的代码获得相同的结果。还要确保在 dealloc 中执行
self.coreWeStart = nil（以及self.start = nil）。I would say kind of, but it could still be done better. Specifically, you could do:
...and then:
...to get the same thing with less code. Also be sure to do
self.coreWeStart = nilin dealloc (andself.start = niltoo).是的。你明白了。
因此，您的对象具有保留计数为 1 的 coreWeStart 属性，它是 start 属性的副本。
Yep. You got it.
So your object has the coreWeStart property with a retain count of one, which is a copy of the start property.