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iOS Swift Basics Swift Types String Manipulation

Jack Cummins
Jack Cummins
17,417 Points
Posted by Jack Cummins
Jack Cummins
17,417 Points

What is the error?

I don't get interpolation and I put in many things that I thought would work but none worked. Can you find the error????????

strings.swift 
// Enter your code below
let name = "Jack"
let greeting = "Hi There,"
let greeting = "(/greeting)" + "(/name)"

2 Answers

Shay Paustovsky
Shay Paustovsky
969 Points
Shay Paustovsky
Shay Paustovsky
969 Points

Hi Jack,

The syntax for "string interpolation" is as follows :

" /(variable) " from here I trust you can walk on your own. Hopefully I've helped ;)

Jaroslaw Adamowicz
Jaroslaw Adamowicz
11,634 Points
Jaroslaw Adamowicz
Jaroslaw Adamowicz
11,634 Points

Actually, this is not correct. You need to use the backslash ( \ ) to do it, not a forward slash ( / ) as you did in the example above. It should be:

"\(variable)"
Jaroslaw Adamowicz
Jaroslaw Adamowicz
11,634 Points
Jaroslaw Adamowicz
Jaroslaw Adamowicz
11,634 Points

Hello there,

Let's see:

For this line:

let greeting = "Hi There,"

you should use string interpolation (with name constant).

To use interpolation you need to use backslash() and then put name of constant or variable in parenthesis. Interpolation looks like this:

"This is some random string \(myString)"

NOTE: myString can be variable or constant, and don't even have to be string at all (it can be number for example).

Now you can apply this knowledge to come up with this:

let greeting = "Hi There, \(name)"

With this done you're almost there.

Note that you don't need interpolation in second part of the challenge, only simple concatenation (adding two strings with +).

I hope it helps!

Cheers!

Jarek