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iOS Swift Basics Swift Types String Manipulation

Pedro Fernández
Pedro Fernández
561 Points
Posted by Pedro Fernández
Pedro Fernández
561 Points

Code that works in xCode is not working in the treehouse editor

Hi I wrote the following code to complete the challenge but the web editor does not seem to accept it as the correct answer and I do not quite seem to be able to figure out the issue with the code since it works perfectly fine in a xCode playground.

thank you

strings.swift 
// Enter your code below
let name = "Pedro"
let greeting = "\("Hi there, ")\(name)"
let finalGreeting = "\(greeting)\. (" How are you?")"

1 Answer

Jennifer Nordell
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STAFF
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Jennifer Nordell
Treehouse Teacher
Jennifer Nordell
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

Hi there! First, I'm not sure why your code is working in your version of Xcode because it will not compile in mine. It gives syntax errors on the third line due to an invalid escape sequence.

Secondly, when we use string interpolation, we are retrieving the string value of a variable and putting it in that spot. There is no need to put a string literal inside the backslash and parentheses although this, by itself, will not cause an error.

Thirdly, the challenge asks that for the last step you use concatenation. Concatenation uses a plus sign + to add two strings together. This is how I reworked your code:

// Enter your code below

let name = "Pedro"  //assign "Pedro" to name
let greeting = "Hi there, \(name)"  //assign "Hi there, Pedro" to greeting
let finalGreeting = greeting + " How are you?"  // concatenate greeting with " How are you?"

Remember that when we use the backslash and parentheses we are telling Swift to insert the value of the variable at this spot inside our string literal. If we were to now use print(finalGreeting) the result would be "Hi there, Pedro How are you?"

Hope this helps! :sparkles: