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

Seth Danner
Seth Danner
2,592 Points
Posted by Seth Danner
Seth Danner
2,592 Points

Seems to work in Xcode. Not sure what I'm missing?

https://teamtreehouse.com/library/build-a-simple-iphone-app-with-swift-2/getting-started-with-ios-development/swift-recap-part-1

Here is the challenge:

Challenge Task 2 of 2

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

When submitting my code for this challenge, it tells me to make sure I am following the instructions and then gives me a hint to "Use string interpolation." I'm not sure what I'm missing here? In Xcode it seems to work.

structs.swift 
struct Tag {
  let name: String
}


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

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

    }

}

let firstPost = Post(title: "Samson", author: "Me", tag: Tag(name: "Basement"))

let postDescription = firstPost.description()
structs.swift 
struct Tag {
  let name: String
}


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

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

    }

}

let firstPost = Post(title: "Samson", author: "Me", tag: Tag(name: "Basement"))

let postDescription = firstPost.description()

1 Answer

Jeff McDivitt
Jeff McDivitt
23,970 Points
Jeff McDivitt
Jeff McDivitt
23,970 Points

Hi Seth -

You are very close, I believe you would have figured it out eventually

struct Tag {
  let name: String
}


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

//You need to remove comma after title to match instructions
//Also need to put .name after tag to match struct created
//I have implemented below in your code
    func description() -> String {
        return "\(title) by \(author). Filed under \(tag.name)"

    }

}

let firstPost = Post(title: "Samson", author: "Me", tag: Tag(name: "Basement"))

let postDescription = firstPost.description()