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Zachary Lach
1,106 PointsI do not understand why this is not the correct answer let language = "Swift" println("Learning " + language)
The question I was asked was "Given the constant named language, write a println statement which will print the following string: "Learning Swift". (Remember to use the language constant within the string you pass to your println statement)."
the error I was given was
"You need to interpolate the value of the 'language' constant into the string you pass to 'println'."
However, when I type this code into my playground on Xcode the console output = Learning Swift
let language = "Swift"
println("Learning " + language)
2 Answers
jamescool
44,592 PointsI would do a search for "string interpolation" if I were you. Here's a hint:
\(constant)
consider the difference between concatenation and interpolation. Let me know if this helps you!
Zachary Betz
10,413 PointsApple's documentation on string interpolation says the following:
String interpolation is a way to construct a new String value from a mix of constants, variables, literals, and expressions by including their values inside a string literal. Each item that you insert into the string literal is wrapped in a pair of parentheses, prefixed by a backslash.
So, since you are mixing constants and literals in your println() statement, you would write it like this:
let language = "Swift"
println("Learning \(language)")
jamescool
44,592 PointsMr. Betz, it seems to me that a person asking a question of this nature will not benefit from having the exact answer provided to him. In my opinion, you did the work Mr. Lach could have done on his own. Merely copying and pasting code is certainly not the aim of this kind of forum.
Zachary Betz
10,413 PointsJames Cool, I see where you're coming from. It all depends on one's learning preference, though. When I post a question to a forum, I am not looking for hints. I am looking for answers. I learn best through tutorials / seeing it done first, so that is why I answered the way I did. As you can see, I linked to the Apple documentation on String Interpolation. I trust that Zachary Lach will read through the docs in his own time to deepen his understanding.