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

Ian Henderson
Ian Henderson
5,512 Points

How do you use string interpolation with a struct?

Hi. I'm stuck on this task even though I completed the whole SWIFT 2.0 track including Object-Oriented SWIFT. How can I use a struct with string interpolation? Can I get a hint please?

structs.swift
struct Tag {
    let name: String

    func tagName() -> String {
        let tagName = "\(name)"
        return tagName
    }
}

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

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

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

let postDescription = firstPost.description()

1 Answer

Moritz Lang
Moritz Lang
25,909 Points

Hi, why did you wrote the tagName() method? You can easily get the tag name by calling tag.name. In your description() method you try to get the name of a tag by calling just tag. You should call tag.name instead. This is my solution:

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: "iOS-Development", author: "Moritz", tag: Tag(name: "iOS"))
let postDescription = firstPost.description()

Let me know if you have any further questions about it. :)