iOS Can I use short code when initialize?

[mikezang]

I have a very simple question. When I read iPad programming guide, there are a lot of similar codes as below:

NSString *str =  [[NSString alloc] initWithFormat:@"Row is %d", row];
cell.textLabel.text = str;
[str release];

I want to know if I can use code as below:

cell.textLabel.text = [[NSString alloc] initWithFormat:@"Row is %d", row]

 

[robbieduncan]

If you do that you will leak memory as you have called alloc/init to create an object thus "owning" it but you cannot call release on it as you do not keep a reference to it.

I suggest you read, memorise and always follow the Cocoa Memory Management Rules.

The following is OK:

cell.textLabel.text = [[[NSString alloc] initWithFormat:@"Row is %d", row] autorelease];

 

[dejo]

The following is OK:

cell.textLabel.text = [[[NSString alloc] initWithFormat:@"Row is %d", row] autorelease];

As is:

cell.textLabel.text = [NSString stringWithFormat:@"Row is %d", row];

 

[mikezang]

Thanks for your answer.

I also read what you suggested, maybe my English is not good enough, I am not sure about that so I want to confirm it.

 

[mikezang]

As is:

cell.textLabel.text = [NSString stringWithFormat:@"Row is %d", row];

Thanks, this one is better!