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iOS

Posted by kurt broughton
kurt broughton
553 Points

Stuck on passing parameter to a function

The challenge asked me to pass the parameter to the function and I can't figure out what I'm doing wrong. My code:

     func greeting(person: String){
     println("Hello \(person)")}
     greeting("Tom")

The error reads: Your 'greeting' printed "Hello Tom" when called with "XYXXY" as the parameter. It should have printed "Hello XYZZY".

It seems to be saying my code did what was intended but is somehow wrong. Any thoughts? The parenthesis are white, Hello is green, \ is red and person is blue

1 Answer

Ben Griffith
Ben Griffith
5,808 Points

In order for string interpolation to work you need to have a \ before your parenthesis. So the correct code is;

println("Hello \(person)")

Here's Apple's guide on the topic for further reading

kurt broughton
kurt broughton
553 Points

Thank you but the interpolation syntax is correct. I can't seem to get the post to show it though.

Ben Griffith
Ben Griffith
5,808 Points

This is strange! Is this the task you're on? Part 3 of 3

http://teamtreehouse.com/library/functions-and-optionals/functions/syntax-and-parameters

I've tried your code and added the \ and it's accepted it on mine.

func greeting(person: String) {
    println("Hello \(person)")
}

greeting("Tom")

PS. If you want to write code on here, have a new line at the start and end of your code with ```

kurt broughton
kurt broughton
553 Points

That is weird. I tried it again without re writing anything and on the third try it worked. It must have been some sort of bug or Loki the trickster having fun at my expense again. Thanks for your help though, I was wondering how to make the code show up like you did. Cheers!

Unless it didn't update to show that challenge as complete so now I need it to move on and the code is not working again... Still being vexed by some sort of gremlin.