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

john westlen
john westlen
1,026 Points
Posted by john westlen
john westlen
1,026 Points

Create an NSMutable Dictionary

It doesn't even tell me what is wrong with my code just tells me to "try again" i wrote both ways to write the code i just don't know what i did wrong

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



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

1 Answer

Oliver Duncan
Oliver Duncan
16,642 Points
Oliver Duncan
Oliver Duncan
16,642 Points

In initWithObjectsAndKeys you must list the value first, then the key (I know, it's nuts). So your code should read:

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