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

Giorgos Karyofyllis
Giorgos Karyofyllis
21,276 Points

Instance method declaration

I get an error " Make sure you're declaring an instance method named description and returns a String". The program runs correctly on Xcode playground. What is wrong?

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.name)"
    }
}

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

No problem! :+1:

1 Answer

Hi Giorgos,

Very close with that - you just need to create the Tag instance in your parameter to pass into the init method:

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

You then need to change your init method to accept a Tag as a parameter:

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

Make sense?

Steve,

Giorgos Karyofyllis
Giorgos Karyofyllis
21,276 Points

Yes that make sense but unfortunently the same error again!

Give me a minute ...

Giorgos Karyofyllis
Giorgos Karyofyllis
21,276 Points

If it helps it works on xcode but not on treehouse editor..

The compiler doesn't like your spacing - change

func description() ->String{

to

func description() -> String {

That works here. Oh, and you don't need the init method, apparently; it works without here!

Steve.