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

Aaron Glaesemann
Aaron Glaesemann
11,303 Points
Posted by Aaron Glaesemann
Aaron Glaesemann
11,303 Points

I can't get the Tag type to read correctly in my string assigned to postDescription.

I've tried initializing the Post struct with no different results. I'm not sure how I can get the sentence to read as "In Cold Blood by Capote. Filed under mystery" instead of "In Cold Blood by Capote. Filed under Tag(name: "mystery")". I don't know how to access the value for tag as a value type of Tag in my firstPost instance to properly use in my string.

1 Answer

Steve Hunter
Steve Hunter
57,682 Points

Hi Aaron

Have a look at this solution to see if that makes sense to you:

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()

Accessing the name property of the tag instance is done with dot notation inside the string interpolation.

I hope that makes sense?

Steve.

Aaron Glaesemann
Aaron Glaesemann
11,303 Points
Aaron Glaesemann
Aaron Glaesemann
11,303 Points

Oh man, that's it! I thought I tried that but I was actually trying to use the capitalized Tag from the original struct declaration.

Thank you for the clarification!!!

Steve Hunter
Steve Hunter
57,682 Points

No problem - glad you got it fixed! :-)

Steve.