Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

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

Andres Aguero
Andres Aguero
30,545 Points
Posted by Andres Aguero
Andres Aguero
30,545 Points

IOS HELP

"We learned about instance methods before. For this task, add an instance method to Post.

Name the method description. It takes no parameters and returns a string that describes the post instance. For example given a title: "iOS Development", author: "Apple", and a tag named "swift", the description would read as follows"

"iOSDevelopment by Apple. Filed under swift"

Once you have an instance method, call it on the firstPost instance and assign the result to a constant named postDescription"

Not sure why it's failing? I placed it on xCode and it seems to work there.

structs.swift 
struct Tag {
    let name: String
}

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

    init (title: String, author: String, tag: String) {
        self.title = title
        self.author = author
        self.tag = Tag(name: tag)
    }
    func description() -> String{
        return "\(title) by \(author). Filed under \(tag.name)"
    }
}
let firstPost = Post(title: "iOS Development", author: "Apple", tag: "Swift")
let postDecription = firstPost.description()
Ashleigh Nombre
Ashleigh Nombre
2,308 Points
Ashleigh Nombre
Ashleigh Nombre
2,308 Points

You don't need and initializer in your code.

2 Answers

Ashleigh Nombre
Ashleigh Nombre
2,308 Points
Ashleigh Nombre
Ashleigh Nombre
2,308 Points

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: "Treehouse blog", author: "S. Hunter", tag: Tag(name: "Swift, iOS")) let postDescription = firstPost.description()

the problem with your answer is that your tag Tag you didn't add the Tag(name: "Swift, iOS")) part which in playground it won't automatically do it for you so you have to remember that when using tag type.

Dale Bailey
Dale Bailey
20,269 Points
Dale Bailey
Dale Bailey
20,269 Points

You need to make sure you use string interpolation Ashleigh Nombre 

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: "Apple", tag: Tag(name: "swift"))
let postDescription = firstPost.description()
Ashleigh Nombre
Ashleigh Nombre
2,308 Points
Ashleigh Nombre
Ashleigh Nombre
2,308 Points

He knew that he just need help with the end result of his code but thank you for correcting