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iOS Objective-C Basics (Retired) Foundation Framework NSDictionary

Tim Groot
Tim Groot
1,334 Points
Posted by Tim Groot
Tim Groot
1,334 Points

The Year Set is not the Correct Value

Hi, I am at Objective-C Basics foundation framework last code challenge for NSDictionary.

Challenge:

Add the year of the album to the 'albumMutable' variable. Where the key is a NSString 'year' and the value is also a NSString '1969'.

My Answer:

[albumMutable setObject:@1969 forKey:@"year" ];

Error: The year set is not the correct value.

I tried some other ways, to put it in a NSString but that didn't really workout. Any help and explanation is greatly appreciated. Thanks.

2 Answers

Holger Liesegang
Holger Liesegang
50,595 Points
Holger Liesegang
Holger Liesegang
50,595 Points

Hi Tim,

you were asked to use 1969 as a string and that would be @"1969" as @1969 builds a NSNumber and this should work:

[albumMutable setObject:@"1969" forKey:@"year"];

I just tested Challenge task 3 of 3 of "Let's add the year of the album to the 'albumMutable' variable. Where the key is a NSString 'year' and the value is also a NSString '1969'." with

NSDictionary *album = @{ @"title":@"Abbey Road", @"artist":@"The Beatles" };
NSMutableDictionary *albumMutable = [NSMutableDictionary dictionaryWithDictionary:album]; 
[albumMutable setObject:@"1969" forKey:@"year"];

and it passed the test.

Tim Groot
Tim Groot
1,334 Points
Tim Groot
Tim Groot
1,334 Points

Hi Holger,

Thanks for your help! Such a stupid mistake, I started thinking way to complicated after I got that error.

Thanks again,

Tim