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iOS Swift 2.0 Basics Swift Types String Interpolation

Posted by Wardah M
Wardah M
477 Points

String interpolation confusion

I'm having trouble with the question "Now that we have an appropriate greeting for our user, let's make a bit more polite by concatenating the greeting string with a second string literal.

Declare a constant named finalGreeting, and concatenate the value of greeting with the string literal " How are you?".

Example: "Hi there, Pasan. How are you?"

This is how I did my code and it is not working: let name = "Wardah" let name = "finalGreeting"

let greeting = "Hi there, (name)." let finalGreeting = "How are you?"

It would be great if someone can help me.

5 Answers

Seth Kroger
Seth Kroger
56,413 Points
Seth Kroger
Seth Kroger
56,413 Points

This challenge step gets a lot of people because it's picky about you concatenating the two strings instead of interpolating: let finalGreeting = greeting + " How are you?" It's the same result, but with a different method.

Fernando Angulo
Fernando Angulo
1,921 Points
Fernando Angulo
Fernando Angulo
1,921 Points

Thank you Seth! I was stuck with this code challenge for a while. It was very helpful!

Anjali Pasupathy
Anjali Pasupathy
28,883 Points
Anjali Pasupathy
Anjali Pasupathy
28,883 Points

I think this is the code you want:

let name = "Wardah" // this line was correct
// Don't redeclare name with the String "finalGreeting"
// The next line inserts name ("Wardah") into the String to get "Hi there, Wardah."
let greeting = "Hi there, \(name)."
// The next line inserts greeting ("Hi there, Wardah.") into the String to get "Hi there, Wardah. How are you?"
let finalGreeting = "\(greeting) How are you?"

I hope this helps!

Wardah M
Wardah M
477 Points
Wardah M
Wardah M
477 Points

Hi, So I tried doing this but it still won't work. Please help:

let name = "Wardah"

let greeting = "Hi there, "

let finalGreeting = "(greeting) How are you?"

Anjali Pasupathy
Anjali Pasupathy
28,883 Points
Anjali Pasupathy
Anjali Pasupathy
28,883 Points

Oh, this is for the challenge! I thought this was some confusion over something in the video. It feels like a long time since I've thought about this particular challenge.

But what Seth said is correct. The challenge asks you to make greeting an interpolated String, and make finalGreeting a concatenated String. Thus, when instantiating greeting, you should use String interpolation. When instantiating finalGreeting, you should use String concatenation.

// STRING INTERPOLATION
let greeting = "Hi there, \(name)."
// STRING CONCATENATION
let finalGreeting = greeting + " How are you?"

I'm sorry for the confusion, and I hope this helps!

Wardah M
Wardah M
477 Points
Wardah M
Wardah M
477 Points

Thank you so much.

nada sironic
nada sironic
1,249 Points
nada sironic
nada sironic
1,249 Points

Thanks heaps Anjali. This clarified a lot for me too