On Oct 8, 2008, at 8:49 AM, Lee, Frederick wrote:
I've seen examples of using [myVar release]. But doesn't setting
myVar
= nil does the same thing?
To be clear, I assume you mean self.myVar = nil.
Neither, though "does the same thing".
Which is the preferred way?
Best practice is to use release directly, since this is lower overhead
(especially if your accessor is atomic) and avoids the possibility of
unwanted side-effects (especially if a subclass happens to override
your set accessor).
The one place where you can't avoid this at the moment, though, is if
you're using synthesised instance variables: you can't currently
access the synthesised variable directly, so you will have to use the
accessor method:
@interface MyClass : NSObject
{}
@property (retain) NSString *aString;
@end
@implementation MyClass
@synthesize aString;
-(void)dealloc {
self.aString = nil; // [aString release]; won't work
}
mmalc
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