iOS Releasing

[estupefactika]

Hi, I have a doubt when I release objects, Have I to release NsDictionary, NsMutableDictionary, NsArray, NsMutableArray, NsNumber, etc when I create them with alloc?

Are there any classes like NSString that its not neccesary? thanks

 

[detz]

Anything you use with alloc needs to be released. The reason your NSString does not have to have it is because you're using a convenience function that returns and autorelease object.

 

[mccannmarc]

WHY couldn't they have put garbage collection into the 3.0 SDK, that would be a godsend!

 

[estupefactika]

Is needed to release this?

UIImage *image =[UIImage imageWithData:imageData];

 

[mccannmarc]

Is needed to release this?

UIImage *image =[UIImage imageWithData:imageData];

No

 

[Luke Redpath]

No

Unless you explicitly retain it.

 

[caveman_uk]

Basically if you use alloc, copy or mutableCopy to create the object or explicitly retain the object then it needs releasing. Objects that are otherwise obtained (eg arrayWithObjects: or stringWithFormat are autoreleased so do not need to be released (unless YOU retained them).