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iOS Objective-C Basics (Retired) Foundation Framework NSDictionary

Jimmy Boone
Jimmy Boone
8,940 Points
Posted by Jimmy Boone
Jimmy Boone
8,940 Points

Why am I told my Dictionary does not contain any values?

I have copied the format from the video exactly and I am still getting a "Your Dictionary doesn't contain any values error"

nsdictionary.mm 
NSDictionary *album = @{@"title":@"Abby Road", @"artist":@"The Beatles"};

2 Answers

Naomi Freeman
STAFF
Naomi Freeman
Treehouse Guest Teacher
Naomi Freeman
Naomi Freeman
Treehouse Guest Teacher 
NSDictionary *album = @{@"title":@"Abbey Road",@"artist":@"The Beatles"};

Hmmm, this ^ works. Stared at a for a couple minutes. I think you're just missing the e in Abbey Road. I could be wrong. It's throwing a funny error for that, but eh - give it a shot :)

Naomi Freeman
Naomi Freeman
Treehouse Guest Teacher
Naomi Freeman
Naomi Freeman
Treehouse Guest Teacher

While we're all here - any idea why my code has stopped being colourful when I post?

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

add a language after the 3rd back tick. you can use c or objective c:

```objective-c
Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

the challenge may not like your use of the literal syntax. try using initWithObjectsAndKeys:

NSDictionary *album = [[NSDictionary alloc] initWithObjectsAndKeys:@"Abbey Road", @"title", @"The Beatles", @"artist", nil];
Dave Abalos
Dave Abalos
6,976 Points
Dave Abalos
Dave Abalos
6,976 Points

this will work but is this part of the scope on his module? I'm afraid he will get confused... just saying.. :)

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

yes it is indeed part of the scope of this module. see 1:35 of this video.

Doug uses the init with objects and keys method, not a literal. literals (besides string literal) are actually not part of the scope of this course, which is why I thought the challenge may not have accepted his literal syntax.

Dave Abalos
Dave Abalos
6,976 Points
Dave Abalos
Dave Abalos
6,976 Points

ohh yeah.. thanks for the refresh... :)