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 Swift Collections and Control Flow Dictionaries in Swift Working With Dictionaries

Posted by james warburton
james warburton
Courses Plus Student 421 Points

totally lost

can I please get some help

dictionary.swift 
// Enter your code below
var iceCream = ["CC":"Chocolate Chip", "AP": "Apple Pie", "PB": "PeanutButter"]
iceCream(iceCream, for RR: Rocky Road)

1 Answer

Steve Hunter
Steve Hunter
57,712 Points

Hi James,

You want to use the .updateValue method on the iceCream dictionary. Use dot notation for that. Then your value is "Rocky Road" and the key is "RR". Inside the updateValue method's parentheses, pass in the value first, then the key after the forKey: part.

It'll look like this:

iceCream.updateValue("Rocky Road", forKey: "RR")

I hope that helps,

Steve.