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iOS Objective-C Basics (Retired) Foundation Framework NSDictionary

Posted by John-Paul Anyiam
John-Paul Anyiam
2,481 Points

i got the answer to the final question but it keeps saying the year i entered is incorrect.

is the problem on my side?

nsdictionary.mm 
NSDictionary *album = @{@"title" : @"Abbey Road", @"artist" : @"The Beatles"}; 
NSMutableDictionary *albumMutable = [NSMutableDictionary dictionaryWithDictionary: album]; 

[albumMutable setObject :@1969 forKey:@"year"];
Devin Scheu
Devin Scheu
66,191 Points
Devin Scheu
Devin Scheu
66,191 Points

Your 1969 needs to be in quotes, that's all :).

2 Answers

Devin Scheu
Devin Scheu
66,191 Points
Devin Scheu
Devin Scheu
66,191 Points

Your code should look like:

NSDictionary *album = @{@"title":@"Abbey Road", @"artist":@"The Beatles"};
NSMutableDictionary *albumMutable = [NSMutableDictionary dictionaryWithDictionary: album];
[albumMutable setObject:@"1969" forKey:@"year"];
Damien Watson
Damien Watson
27,419 Points
Damien Watson
Damien Watson
27,419 Points

Or brackets if you want to store a number from variable or directly:

int myYear = 1969;
[albumMutable setObject:@(myYear) forKey:@"year"];   // same as @(1969)