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

Posted by Calvin Hu
Calvin Hu
670 Points

How to use NSMutableDictionary

I am having problems understand how to use Alloc and Init. It keeps saying expected ']'.

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

1 Answer

kasaltrix
kasaltrix
9,491 Points

Objective C provides us a default initializer method which can be used to create a dictionary object. I have also provided the code for the next two tasks, just in case you need any help :)

NSMutableDictionary *carDict = [[NSMutableDictionary alloc]initWithObjectsAndKeys: @"Honda",@"Make",@"Accord",@"Model",nil];
NSString *myRide = [[NSString alloc]init];
myRide = [carDict valueForKey: @"Make"];
Calvin Hu
Calvin Hu
670 Points

Thanks so much, I got stuck on this question for the whole night.