Question

I have an NSArray, and I am declaring that variable inside a function locally and used inside in for loop. But while I Analyze code it appears to be an error or an issue. The issue is Dead store - Values stored to 'elements' during initialisation is never read. But I do use that variable inside a for in loop…

Visual Description :

So the question is, Why compiler says that after creating NSArray I haven’t read anywhere in my code?

P.S. Code runs as I intended, but I just want to know why is this issue showing up?

Thanks for any explanation given.

Answer 1

You’re allocating memory for elemnts and initialising it, and then two lines later you overwrite that variable having never used the allocated memory!

Just write this instead:

NSMutableArray *values = [[NSMutableArray alloc] init];
NSArray *elements = [[alarmLevelsDoc rootElement] elementsForName:@"AlarmLevel"];
...