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

Posted by patrick ridd
patrick ridd
21,011 Points

I believe I have the answer for part 2, but it still won't compile?

I have ran this code in an xCode playground and it works and outputs exactly how the example text says it should. Despite that, this challenge says it won't compile and doesn't give me any errors in preview. Not sure how to fix this. Thanks.

-Patrick

structs.swift 
struct Tag {
    let name: String
}

struct Post {
    let title: String = "iOSDevelopment"
    let author: String = "Apple"
    let tag = Tag(name: "swift")

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

2 Answers

Anjali Pasupathy
Anjali Pasupathy
28,883 Points
Anjali Pasupathy
Anjali Pasupathy
28,883 Points

You've nearly got it. The only thing wrong with your code is you shouldn't instantiate the properties of Post inside the struct. Rather, instantiating the properties of Post should happen when you instantiate a Post object (similar to how in Tag, you instantiate tag.name when you instantiate a Tag object).

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: /*STRING*/, author: /*STRING*/, tag: /*TAG*/)

I hope this helps!

patrick ridd
patrick ridd
21,011 Points

Thanks Anjali! That cleared it up.

Anjali Pasupathy
Anjali Pasupathy
28,883 Points
Anjali Pasupathy
Anjali Pasupathy
28,883 Points

You're welcome! Glad I could help.

James Knight
James Knight
4,680 Points
James Knight
James Knight
4,680 Points

import Foundation

struct Tag { let name: String }

struct Post { let title: String = "iOSDevelopment" let author: String = "Apple" let tag = Tag(name: "swift")

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

} let firstPost = Post() let postDescription = firstPost.description()

I have just entered this into the challenge and it has accepted the answer, the only thing that i changed was to import foundation. hope this helps !

patrick ridd
patrick ridd
21,011 Points

I tried to add the "import Foundation" statement and it still didn't work. That's funny that it worked on yours though. Thanks for the feedback, James.