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 Basics (retired) Variables and Constants Constants

I couldn't do it.

I tired to write the code. But it didn't work.

constants.swift
var str ="language"
let str ="Swift"
Martin Wildfeuer
Martin Wildfeuer
Courses Plus Student 11,071 Points

Hey there! just wanted to check if you managed to pass the challenge? Let me know if you need help :)

1 Answer

Martin Wildfeuer
PLUS
Martin Wildfeuer
Courses Plus Student 11,071 Points
Assignment

Create a constant named language and assign it a string "Swift"

Your code:

var str = "language"
let str = "Swift"

So, what you are doing would be, if it was the assignment:

  • Create a variable named str and assign it a string "language"
  • Create a constant named str and assign it a string "Swift"

Give it a try and see if you can solve this with the information I provided now!

Additional information:

Your code triggers a compiler error, as you are defining str twice, the first time as a variable, second time as a constant. This is not valid code.

You can read more on this topic at Apple Swift Docs: Constants and Variables.

Hope that helps :)