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iOS

Posted by Stu Cowley
Stu Cowley
26,287 Points

Huh? NSMutableArray Code Challenge Part #3 (BlogReader Project)

Hey guys,

I've stumbled across an issue that I am having with this section of the code challenge.

The question would like me to remove the second object from your 'elements' array.

Here is my current code

NSMutableArray *elements = [NSMutableArray arrayWithCapacity:0];
[elements addObject:@"Helium"];
[elements addObject:@"Neon"];
[elements addObject:@"Argon"];

I go ahead and remove the following line (starting the count at 0 from helium, if that's what I'm meant to do):

[elements addObject:@"Argon"];

I go ahead and check the changes and it is incorrect. Could someone please, please, please give me some advice on this. I'm stumped on what to do as I'm still a little shaky with objective-c.

Thanking you in advance

Stu :)

3 Answers

Steve Hunter
Steve Hunter
57,684 Points

Is it looking for 

[elements removeObjectAtIndex:1];

Rather than just deleting the creation of the index, this removes it programatically.

Stu Cowley
Stu Cowley
26,287 Points
Stu Cowley
Stu Cowley
26,287 Points

Hey Steve,

Of course, forgot about that little bugger. Thanks for that mate :)

Stu

Steve Hunter
Steve Hunter
57,684 Points

No problem - glad to be of some help!

MUZ140316 Milton Chitsike
MUZ140316 Milton Chitsike
7,344 Points
MUZ140316 Milton Chitsike
MUZ140316 Milton Chitsike
7,344 Points

or you can go around and do it this way. NSMutableArray *elements = [NSMutableArray array]; elements = [NSMutableArray arrayWithObjects:@"Helium", @"Neon", @"Argon", nil]; [elements removeObjectAtIndex:1];