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iOS Build a Simple iPhone App with Swift Getting Started with iOS Development Swift Recap Part 1

Kenneth Dubroff
Kenneth Dubroff
10,612 Points

Challenge not passing because postDescription doesn't match... but it does... I think

Can someone please shed some light on what I'm doing wrong? Thanks

structs.swift
struct Tag {
  let name: String
}

struct Post {
  let title: String
  let author: String
  let tag: Tag

  func description() -> String {
    return "\(title) by \(author).  Filed under \(tag)"
  }

  }

let firstPost = Post(title: "iOSDevelopment", author: "Apple", tag: Tag(name: "swift"))

let postDescription = firstPost.description()
Matt Skelton
Matt Skelton
4,548 Points

Hey Kenneth,

You're very nearly there! Currently, you're trying to interpolate the value of the entirety of your tag. In this example, this will result in an output of "iOSDevelopment by Apple. Filed under Tag(name: "swift")".

So what you want to do is grab the name property of your tag and interpolate it into your string.

func description() -> String
{
    return "\(title) by \(author). Filed under \(tag.name)"
}

That should do you nicely. Be careful if you're tweaking your current description method to equal the one I've mentioned here, as you have two white spaces following the full stop after your author interpolation. The compiler is very specific when it comes to your output. Hope this helps!

Kenneth Dubroff
Kenneth Dubroff
10,612 Points

Thanks much Matt. Not sure how I missed that when I ran it in a playground. I added the second space after it didn't compile initially, thinking maybe there were two spaces in the instructions.

1 Answer

Jeff McDivitt
Jeff McDivitt
23,970 Points

Your are very close in the function you need tag.name

struct Tag {
    let name: String
}

struct Post {

    var title: String
    var author: String
    var tag: Tag

    func description() -> String {

        return("\(title) by \(author). Filed under \(tag.name)")
    }

}

let firstPost = Post(title: "iOS Development", author: "Apple", tag: Tag(name:"swift"))

let postDescription = firstPost.description()