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iOS Object-Oriented Objective-C Memory, Arrays and Loops, Oh My! Alloc and Init

Wesley Maffly-Kipp
Wesley Maffly-Kipp
1,061 Points
Posted by Wesley Maffly-Kipp
Wesley Maffly-Kipp
1,061 Points

What am I doing wrong on this question? It compiles correctly, but it says to check syntax, keys, and values carefully.

From what I can tell from the video, this is the correct response to this question, but for some reason it is not going through.

variable_assignment.mm 
NSMutableDictionary *carDict = [[NSMutableDictionary alloc] initWithObjectsAndKeys: @"Make", @"Honda", @"Model", @"Accord",nil];

1 Answer

Martin Wildfeuer
PLUS
Martin Wildfeuer
Courses Plus Student 11,071 Points
Martin Wildfeuer
Martin Wildfeuer
Courses Plus Student 11,071 Points

Your syntax is correct, however objects and keys are mixed up, that is, the other way round. The object comes first and then the key, like initWithObjectsAndKeys indicates. I know this can be confusing, we are used to define keys first.

NSMutableDictionary *carDict = [[NSMutableDictionary alloc] initWithObjectsAndKeys: @"Honda", @"Make", @"Accord", @"Model", nil];

Hope that helps :)