memory management - In Objective-c autoReleased Objects are released if no pointer points to them anymore? -

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just curiosity... if alter pointer point other autoreleased instance, previous autoreleased instance pointer pointing to, autoreleased ? example ...

nsstring pstr* = [nsstring stringwithstring:@"instance one"]; // sth pstr pstr = [nsstring stringwithstring:@"instance two"]; // sth else pstr

are both of instances autoreleased ??

yes. lifecycle of objects doesn't depend on variables point them (unlike environments garbage-collection). that's why it's possible have variable pointing deallocated object or have memory leaks: objects retained forever no references them.

lifecycle depends on how objects created , how use retain, release , autorelease methods.

it's explained in more details in cocoa memory management guide.


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