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

Posted by Nurul Eka Fitriany Hilal
Nurul Eka Fitriany Hilal
10,720 Points

I cant solve this question!!

Create an NSMutableDictionary called 'carDict'. Allocate memory and initialize 'carDict' with the following key/value pairs: "Make":"Honda", "Model":"Accord". Do this all in one line of code.

my answer:

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

doesnt anyone could tell me where I made a mistakes???

variable_assignment.mm 
 NSMutableDictionary *carDict = [[NSMutableDictionary alloc] carDict :initWithObjectsAndKeys: @"Make", @"Honda", @"Model", @"Accord", nill];
Kamran Ismayilov
Kamran Ismayilov
5,753 Points
Kamran Ismayilov
Kamran Ismayilov
5,753 Points

remove "carDict" after allocation, it comes before :initWithObjectsAndKeys method, yes and also get rid of " : " before init.

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

1 Answer

Sydney Srirak
Sydney Srirak
7,612 Points
Sydney Srirak
Sydney Srirak
7,612 Points

NSMutableDictionary *carDict = [[NSMutableDictionary alloc] initWithObjects:[NSArray arrayWithObjects:@"Honda", @"Accord", nil] forKeys:[NSArray arrayWithObjects:@"Make", @"Model", nil]];