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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

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

You don't need and initializer in your code.

2 Answers

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.

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

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