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iOS Objective-C Basics (Retired) Foundation Framework NSDictionary

Posted by Tera Tarbet
Tera Tarbet
1,212 Points

Got past the 2nd task of this quiz and the message is that their is a syntax error on the for code...what is the prob?

NSDictionary *album = @{@"title":@"Abbey Road",@"artist":@"The Beatles"}; NSMutableDictionary *albumMutable = [NSMutableDictionary dictionaryWithDictionary:album]; [albumMutable setObject:@1969 forKey:@"year"]; for (NSString *string in [albumMutable allKeys]) { NSLog(@"key %@ value %@", string, [albumMutable objectForKey:string]); }

3 Answers

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

Hi Tera,

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.

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

Oh, and of course welcome to Treehouse, Tera Tarbet

... also there's a great video here in the forum section on the right "Tips for asking questions" that might help you with posting your questions and code on the forum.

...and keep on coding :)

Tera Tarbet
Tera Tarbet
1,212 Points
Tera Tarbet
Tera Tarbet
1,212 Points

Thanks for the help! I watched the video...thanks for the tip!