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

Luis Paulino
PLUS
Luis Paulino
Courses Plus Student 1,779 Points
Posted by Luis Paulino
Luis Paulino
Courses Plus Student 1,779 Points

How do I set the value Key?

I know I got to set the value to @"make",but I'm seriously stumped. Thank you for the help

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

1 Answer

Jennifer Nordell
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STAFF
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Jennifer Nordell
Treehouse Teacher
Jennifer Nordell
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

Hi there! It seems like you set up your dictionary just fine and even did the alloc and init part correctly. But @"Honda" is the value, not the key. Here we want to set our string equal to the value at the key using the valueForKey. There might be a more elegant solution, but this worked for me.

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

Hope this helps! :sparkles:

Luis Paulino
Luis Paulino
Courses Plus Student 1,779 Points
Luis Paulino
Luis Paulino
Courses Plus Student 1,779 Points

I didn't add carDict valueForKey:@"Make". Thank you Jennifer, I'm so grateful to you.