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The conditions in which KeepCount increases or decreases

 3 years ago
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The conditions in which KeepCount increases or decreases

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I have read that objects retain count and that it can be increased when we assigned a second value (or object).

Can anybody give me an idea about the basic conditions where retainCount increases or decreases (without retain , alloc and release)...


retainCount of an object changes in the following cases:

  • When you create an object(new or alloc, copy or mutablecopy), it has a retain count of 1.

  • When you send an object a retain message, its retain count is
    incremented by 1.

  • When you send an object a release message, its retain count is
    decremented by 1.

  • When you send a autorelease message to an object, its retain count will be decremented by 1(not
    immediately as in case of release but some time in the future)

You can view this post to get a detailed info on how memory management works in iPhone.

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