On Jul 5, 2009, at 5:34 AM, DKJ wrote:
In fact I'm now going through my code line-by-line, checking all the
alloc, retain, copy etc. statements. While doing so I've come across
another thing that puzzles me.
Xcode very kindly provides template code when I create new files for
classes like UIViewController. (But this is still a Cocoa question.)
In the template code for viewDidLoad, it provides [super viewDidLoad].
But there is no corresponding [super viewDidUnload] in the template
code for viewDidUnload. Should it be there anyway?
dkj
My guess is that it should, but guessing is not necessary. Just add
it, because it won't hurt if it isn't needed and it will do the right
thing if it is. Not adding it, on the other hand, might do the wrong
thing if it is needed. You might also want to file a bug report,
pointing out the apparent discrepancy.
Just as an aside, I typically write my code using the "socks and
shoes" mentality. You put your socks in first and your shoes last, but
you take off your shoes first and your socks last. So, I usually write
- (void) viedDidLoad
{
[super viewDidLoad];
// load my stuff
}
- (void) viedDidUnload
{
// unload my stuff
[super viewDidUnload];
}
Note how calling the super implementation comes first in viewDidLoad
but last in viewDidUnload. I use the same approach for other pairs of
closely related methods, such as viewWillAppear/viewWillDisappear and
viewDidAppear/viewDidDisappear.
Wagner
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