Please do not post the same thing multiple times. The board software automatically flags certain posts as needing moderator attention. This happens the most often for new users. I'm pretty sure this is made clear at the time you attempt to post. Posting the same thing over and over again just makes that many more posts the moderators have to weed through later. This makes us sad. Don't make us sad. If your post/thread doesn't appear, just wait a while. Don't post it again. If it hasn't shown up by the next day, then you can try again. I normally go through posts in the mornings, and try to check a few times throughout the day, but I'm not here 24/7. There will typically be a significant delay before posts are approved. Just be patient.
Hi every one. I have a very question, I am almost embarrassed to ask. As I am learning, try to reinforce my understanding of retain count, I made a small code. In this code, I created a MyClass which is a subclass of NSObject.
in MyClass.m, I implement a method called sayHi:
-(void) sayHi {
NSLog (@"Hi");
}
In ViewController.m:
- (void)viewDidLoad {
[super viewDidLoad];
MyClass *obj=[[MyClass alloc] init];
[obj sayHi];
}
This outputs Hi in the console as expected.
But When I do this:
- (void)viewDidLoad {
[super viewDidLoad];
MyClass *obj=[[MyClass alloc] init];
[obj release];
[obj sayHi];
}
I expect to see some kind of error, however it still output Hi as before. I thought once I release an object, the retain count decreased by one, in this case it's 0. So when I send a message shouldn't be it sent to an none existing object?
Why does it still work? I must have not fully understand the concept.
Please tell me what I am missing. Thanks.
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0 • Off Topic Insightful Disagree Dislike Like Awesome@LinusR Yes, I did know about ARC, but I figure it's better for me to fully understand how memory management works before I take the easy route.
@martol1ni I heard that before releasing an object, it's good practice to set it to nil, flush the old value out, so to speak,precisely for the reason you have described, it makes perfect sense.
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