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

returning a string from a method in a struct

How do I return a string from the "description" method in this struct "Post" of the structures variables? I am trying to do this with "return title + author + tag" under the in the middle of the code.

structs.swift
struct Tag {
  let name: String
}

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

  func description() {
    return title + author + tag
    }

  }
  let firstPost = Post( title: "hi", author: "hi", tag: Tag(name:"hi"))

  let postDescription = firstPost.description

1 Answer

Abdullah Althobetey
Abdullah Althobetey
18,216 Points

Hi Ryan, There are three mistakes in your code. First, you should specify the return value of the method description, if you do not then it will return void (i.e. return nothing), Second, tag is a Tag object, it is not a String, you cannot add strings with other objects. You may want to use tag.name. Third, when calling the description method, you forgot to type the parenthesis like this: description()

So, the correct code will become like this:

    struct Tag {
        let name: String
    }

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

        func description() -> String
        {
            return title + author + tag.name
        }

    }
    let firstPost = Post( title: "hi", author: "hi", tag: Tag(name:"hi"))

    let postDescription = firstPost.description()