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Brian Chewning
7,270 Pointscode challenge: Mutable vs. Immutable 3 of 4
I can not figure out what I am missing:
NSMutableArray *elements = [NSMutableArray arrayWithCapacity : 0];
elements = [NSMutableArray arrayWithObjects:@"Helium", @"Neon", @"Argon", nil];
elements = [title removeObjectAtIndex: 1];
4 Answers
John Hill
Front End Web Development Techdegree Graduate 35,236 PointsWatch the video, you must. The answers you seek lie deep within you (@~3:15 in the video).
NSMutableArray *elements = [NSMutableArray array];
elements = [NSMutableArray arrayWithObjects:@"Helium", @"Neon", @"Argon", nil];
[elements removeObjectAtIndex: 1];
[elements removeLastObject];
Amit Bijlani
Treehouse Guest TeacherBrian your array is called elements so why in your last line are you calling the method removeObjectAtIndex on something called title? It should be called on elements.
Brian Chewning
7,270 PointsGot it thanks.
DAKSHISH PATEL
1,015 Pointsi don't get it, please can you kindly advise the 3rd & 4th challenge answers so that i can complete the test
DAKSHISH PATEL
1,015 Pointshello?