iphone - 释放和自动释放

Question

告诉我 release 、 autorelease 、 drain 、 nil 和 null 之间的区别。什么时候调用应用程序的dealloc方法？

Answer 1

Release: Decrease retain count by 1

Autorelease: Deleayed release, will decrease retain count by 1 when the autoreleasepool is drained, which is most likely in the next run but not guaranteed.

Drain: To drain the autorelease pool

Nil: Null for objective C objects

Null: Null for C pointers.

只是回答@Kendall Helmstetter Gelner 所说的，当保留计数达到 0 时将调用 dealloc 方法。