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) Types Printing Results

Posted by Raaghav Chaudhry
Raaghav Chaudhry
464 Points

Why can't i add a variable to my string?

FOR THIS CODE CHALLENGE : Given the constant named language, write a println statement which will print the following string: "Learning Swift". (Remember to use the language constant within the string you pass to your println statement).

Why is it that the following code does not work: let language = "Swift" println("Learning " + language)

println.swift 
let language = "Swift"
println("Learning " + language)

2 Answers

Jayden Spring
Jayden Spring
8,625 Points
Jayden Spring
Jayden Spring
8,625 Points

It wants you to use interpolation to add the string to your variable. If you remember interpolation is when you add () inside a string with the variable name inside the brackets.

Jayden

Jerry Haynes
Jerry Haynes
428 Points
Jerry Haynes
Jerry Haynes
428 Points

let language = "Swift" println("Learning (language)") //this is known as interpolation println("" ()")