Objective c checking whether text field is empty

Question

Here\'s the code:

- (IBAction) charlieInputText:(id)sender {
    //getting value from text field when entered
    charlieInputSelf = [sender stringValue];

           


        

Answer 1

Joshua has the right answer in the narrow case, but generally, you can't compare string objects using the == or != operators. You must use -isEqual: or -isEqualToString: This is because charlieImputSelf and @"" are actually pointers to objects. Although the two sequences of characters may be the same, they need not point at the same location in memory.