swift structure

Hey William,

Let's see if I can clear some things up for you:

First, you don't need an initializer when using structures. Swift automatically provides one for you - known as the memberwise initializer.

Second, Post has a constant stored property named tag of type Tag. Not Tag.name, as you have it written. You now need to create an instance of Post and assign it to the constant firstPost. You do this by passing values for each property, of their respective type. So you will need to pass in a string for title, a string for author, and an instance of Tag for tag. You can create the instance of tag inside the Post initialization, by passing it a string value for name.

// Created instance of Post with Tag instance for last parameter
let firstPost = Post(title: "iOSDevelopment", author: "Apple", tag: Tag(name: "Swift"))

Third, we have to fix your instance method. You haven't specified a return type. So your function can't return anything. It needs to return a string. Also, for the third interpolated value, it needs to be Tag.name. You are accessing the name property of the Tag instance.

// Added return type to instance method, and accessed tag.name property
  func description() -> String {
    return "\(title) by \(author). Filed under \(tag.name)"
  }

Here is my version of the complete code:

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.name)"
  }

}

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

Hope this helps. Good Luck!

PS. If anyone is looking to join a slack channel to collaborate on iOS projects and work on learning Swift in real time, reply below with an email and I will send you an invite!

Go through this code and see if it helps you:

struct Tag {
    let name: String

}

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

  init(title: String, author: String, tag: Tag) {
      self.title = title
      self.author = author
      self.tag = tag
  }

}

let myTag = Tag(name: "programming")
let post = Post(title: "Programming 101", author: "Joe The Plumber", tag: myTag)
let titleString : String = post.title
let authorString : String = post.author
let tagNameString = post.tag.name


print("\(titleString), \(authorString), \(tagNameString)")

Hope it helps!

Happy Coding!

thank you everyone!

mmaazzoonn@gmail.com