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i.e. would cause the object to be released immediately and not have to be released by the pool if I did this?
[[NSArray arrayWithCapacity:100] release];
Can't find a clear explanation in the docs about this.
655
An autorelease pool stores objects that are sent a release message when the pool itself is drained. Important. If you use Automatic Reference Counting (ARC), you cannot use autorelease pools directly. Instead, you use @autoreleasepool blocks.
The autoreleasepool allows you to explicitly manage when autorelease objects are deallocated in Swift, just like you were able to in Objective-C. Note: When dealing with Swift native objects, you generally will not receive autorelease objects.
It would likely crash when the object would normally be autoreleased. autorelease means "delayed release", so it will be released: just later. Since the object won't exist later as you are manually releasing it, you will likely crash due to the runtime sending the -release message to your now-deallocated object.
Edit: Note that if you -retain objects that come autoreleased, you do have to -release them: you are taking ownership.
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I realise that this is stupid now, and that I shouldn't be releasing something I don't own.
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