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iOS Build a Simple iPhone App with Swift 2.0 Getting Started with iOS Development Swift Recap Part 1

shane reichefeld
PLUS
shane reichefeld
Courses Plus Student 2,232 Points
Posted by shane reichefeld
shane reichefeld
Courses Plus Student 2,232 Points

What am i doing wrong

i cant figure it out

structs.swift 
struct Tag {
    let name: String
}

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

}
func description() {
  let firstPost = Post(title: "iOS Development", author: "Apple", tag: Tag(name: "Swift"))
  return firstPost
}
let postDescription = description()

1 Answer

jcorum
jcorum
71,830 Points

The function needs to be inside the struct. Further, you don't hardcode values into the function's return, you interpolate the values of its stored properties into the String. Here are the steps: When you create a Post struct you pass it values. The (unseen) constructor assigns those values to the stored procedures. When you call the func it puts those stored values into the String using String interpolation. Then it returns the String.

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

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

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

let postDescription = firstPost.description()

You don't have to create the tag first. You can create it the way you do, but I break it out because I think it is clearer what is going on.