Question

I thought that when I declare an object the pointer is still nil until when I allocate memory and initialize it. Instead I run this code and I was surprised to see that it outputs “TRUE”:

NSString * aString; 
        if (aString) {
            NSLog(@"TRUE");
        }

thanks

Answer 1

It is pointing at an undefined location – it can point to any memory location (even one that you don’t have access to.

You should NIL it out when declaring it.