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iOS Build a Simple iPhone App (iOS7) Creating a Data Collection Implementing an Array

Posted by ultranerd
ultranerd
1,060 Points

Significance of 'nil' in NSArray?

What is the purpose of ending NSArray with 'nil' in Objective C

-(NSArray *) phrases {

if (phrases == nil) {

        phrases = [[NSArray alloc] initWithObjects:

                        @"Phrase 1",

                        @"Phrase 2",nil);

    }

    return phrases;

}

2 Answers

Chris Campisi
Chris Campisi
1,640 Points

From my understanding, nil allows the program to understand that it has reached the end of the array.

ultranerd
ultranerd
1,060 Points

Thank you, sir.

Yoav Zoldan
Yoav Zoldan
9,485 Points
Yoav Zoldan
Yoav Zoldan
9,485 Points

You can use the array literal and it's much shorter, like this: phrases = @[@"phrase 1",@"phrase 2"];

ultranerd
ultranerd
1,060 Points

I appreciate it. Thanks.