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

Vera Hsu
Vera Hsu
997 Points
Posted by Vera Hsu
Vera Hsu
997 Points

instance method

The bummer said make sure you create an instance called description that returns a string. I don't know what is wrong with my code. Any help would be fantastic, thanks.

structs.swift 
struct Tag {
    let name: String
}
struct Post {
    let title: String
    let author: String
    let tag: Tag

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

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

}

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

2 Answers

Michael Jones
.a{fill-rule:evenodd;}techdegree seal-36
Michael Jones
Python Development Techdegree Graduate 38,554 Points

Hi Vera,

You actually don't need to create an init method (but it doesn't really matter that you did).

Your could should look something like this (only one small addition) - 

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: "Apple", tag: Tag(name: "Swift"))

let postDescription = firstPost.description()

Hope this helps.

Happy Coding!!

Michael J

Vera Hsu
Vera Hsu
997 Points
Vera Hsu
Vera Hsu
997 Points

hi, I still have the same error I mentioned in the problem.

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()

this is my code.

Michael Jones
seal-mask
PLUS
.a{fill-rule:evenodd;}techdegree seal-36
Michael Jones
Python Development Techdegree Graduate 38,554 Points
Michael Jones
.a{fill-rule:evenodd;}techdegree seal-36
Michael Jones
Python Development Techdegree Graduate 38,554 Points

Hi Vera,

Your code is correct and works when I tested it on xCode Playground. But the TeamTreehouse challenge for this didn't like that there was a space in-between 'fun description' and '(). So it should look like - 

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

All I done was this and it worked.

Happy Coding!!

Michael J