Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS Object-Oriented Objective-C Memory, Arrays and Loops, Oh My! Review Dictionaries and Arrays

Rafał Małczyński
Rafał Małczyński
15,699 Points

How to copy a NSArray to a NSMutableDictionary?

I tried to deal with the syntax a couple times, but it didn't work. How should I copy specific values from an Array into the Dictionary?

variable_assignment.mm
NSArray *shoeOrder = @[@"Charles Smith", @(9.5), @"loafer", @"brown"];

NSMutableDictionary *shoeOrderDict = [[NSMutableDictionary alloc] init];

shoeOrderDict = [shoeOrder @"customer" = objectAtIndex:0,
                           @"size" = objectAtIndex:1,
                           @"style" = objectAtIndex:2,
                           @"color" = objectAtIndex:3];

1 Answer

Arman Arutyunov
Arman Arutyunov
21,900 Points
[shoeOrderDict setObject:[shoeOrder objectAtIndex:0] forKey:@"customer"];
[shoeOrderDict setObject:[shoeOrder objectAtIndex:1] forKey:@"size"];
[shoeOrderDict setObject:[shoeOrder objectAtIndex:2] forKey:@"style"];
[shoeOrderDict setObject:[shoeOrder objectAtIndex:3] forKey:@"color"];