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Christopher Martin
480 PointsMy code for the "println" challenge worked in the playground, but not in the challenge box on treehouse. Why not?
Here's the code:
let language: String = "Swift" println("Learn " + language)
What did I do wrong?
Michael Pastran
4,727 Pointsthe code should look like this
let language = "Swift" println("Learn (language)")
the reason is that you are trying to use string concatenation ( + ). but what you need is interpolation because you are putting a variable inside of string.
Michael Pastran
4,727 Pointsalso make sure they are not asking you to tell it the data type. try it without the String. the code is right but they might not be asking for it to be put that way. let me know if it works lol
Christopher Martin
480 PointsThank you so much Michael! Your answer really helped me.
Michael Pastran
4,727 Pointsyeah no problem. idk why its not showing the " \" before (language) on my comment. if you have any more questions feel free to ask.
Christopher Martin
480 PointsYup, I watched the video again and used the (language), and it worked :)
1 Answer
arnavthecoder
3,453 PointsDear Christopher Martin,
To print that line, you need to use String Interpolation. To use that, you must do the following:
let language: String = "Swift"; println("Learn \(language)")
You can also move the print statement underneath and delete the semicolon.
Christopher Martin
480 PointsChristopher Martin
480 PointsI put a line break between "Swift" and println, by the way.