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

Challenge Task 2 of 2 - Build a Simple iPhone App with Swift 3

I can't for the life of me get this to work in the treehouse editor. In XCode, it works just fine.

Can anyone tell me if I'm just getting something blatantly wrong? It gives me a hint to use string interpolation, which I'm quite certain I'm doing correctly here.

structs.swift
struct Tag {
    let name: String
}

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

    func description() -> String {

        let title = self.title
        let author = self.author
        let tag = self.tag

        let desc: String = "\(title) by \(author).  Filed under \(tag.name)"

        return desc
    }


}

let firstPost = Post(title: "iOS Development", author: "Apple", tag: Tag(name: "swift"))
let postDescription: String = firstPost.description()
print(postDescription)

1 Answer

Jeff McDivitt
Jeff McDivitt
23,970 Points
  1. You do not need to initialize functions so no need for the below
 let title = self.title
        let author = self.author
        let tag = self.tag
  1. Your function only needs a return with the description
  2. You do not need string in the second to last line of code
  3. You do not need the print statement at the end

The correct answer is below

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: "iOSDevelopment", author: "Apple", tag: Tag(name: "swift"))
let postDescription = firstPost.description()