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 trialJonathan Boisvert
4,582 Pointsassigning a constant to a value for a Key
I am having trouble with the syntax of changing a value to a constant in the dictionary
var iceCream = [ "CC": "Chocolate Chip", "AP": "Apple Pie", "PB": "Peanut Butter"]
iceCream ["RR"] = "Rocky Road"
iceCream.updateValue["applePie", forKey: "AP"]
1 Answer
Thomas Dobson
7,511 PointsHi Jonathan,
Lets break this down:
var iceCream = [ "CC": "Chocolate Chip", "AP": "Apple Pie", "PB": "Peanut Butter"] //setting up the array
iceCream ["RR"] = "Rocky Road" //Adding Rocky Road for key RR
let applePie = iceCream["AP"] //Read key AP, set that keys value to a constant called applePie
iceCream.updateValue("Chocolate Chip Cookie Dough", forKey: "CC") //update key CC with the value of Chocolate chip Cookie Dough
There is some good reading on Arrays in Apple's Collection Types Docs
I hope that helps!