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brad agoos
284 Pointsinterpolation question
I was able to have my computer's Xcode playground and console print the desired outcome of a line that said "Learn Swift". But I keep getting the error from the lesson that I need to interpolate. I don't understand why I would need to bc I get the seemingly desired result of "Learn Swift". Also, the question doesn't seem to ask to interpolate which was only gone over in a "var" line of the code in the lesson. Any thoughts?
let language: String = "Swift"
println("Learning " + language)
2 Answers
William Li
Courses Plus Student 26,868 PointsHi, Brad, what you're doing with your println output String isn't wrong, it's called string concatenation, a way of combing 2 or more String using the plus signs, and it'd produce the same result.
But the challenge asks for is string interpolation.
println("Learning \(language)")
Like this, without using the plus sign, you enclose variable/constant by \() and inject its value directly into the println String.
brad agoos
284 PointsWilliam-thanks for your reply. Two things- 1. the challenge didn't ask for/require interpolation although the error message seems to suggest that it is looking for it. 2- I actually did the exact line of code you suggested but when I enter that SAME line of code it still tells me that I need to "interpolate the value of the 'language' constant into the string i pass into 'println' " which both you and I already did?? Confused. Do you think it wants some other type of interpolation or is this a bug??
William Li
Courses Plus Student 26,868 Points1 Actually it did, though the wording is a bit different
Remember to use the language constant within the string you pass to your println statement, yes. That means interpolation
2 I wonder if u made any change to the let statement in line 1? This is original code provided by challenge, don't modify it, otherwise it may not pass the grader, just add the println statement on the next line
