Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

iOS Swift Collections and Control Flow Dictionaries in Swift Working With Dictionaries

Swift Dictionaries

In the last line of code I'm trying to update the value of "CC" to "Chocolate Chip Cookie Dough", but it keeps coming back wrong. What am I missing?

// Enter your code below

var iceCream = ["CC": "Chocolate Chip", "AP": "Apple Pie", "PB": "Peanut Butter"]

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

let applePie = ["AP"]

iceCream.updateValue("Chocolate Chip Cookie Dough", forKey: "CC")

1 Answer

Hi there,

The issue isn't your last line - it is your third line.

To pull a value out of a dictionary, you need to present the key to the dictionary so change:

let applePie = ["AP"]


let applePie = iceCream["AP"]

Otherwise, applePie will just contain an array with a single string in it.

I hope that helps.


Thank you! I appreciate the help!

No problem! :+1: :+1: