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

Golf Ataboonwongse
Golf Ataboonwongse
4,061 Points

What's wrong with my code?

The questions of this code challenge is as follows:


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

I have tried coding it directly on Xcode already and it works. However, it still reply me with an error. Could anyone help me figuring it out? Thank you

structs.swift
struct Tag {
    let name: String
}

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

  init(title: String, author: String, tagName: String) {
    self.title = title
    self.author = author
    self.tag = Tag(name: tagName)
  }

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

let firstPost = Post(title: "iOS Development", author: "Apple", tagName: "Swift")

let postDescription = firstPost.description()

2 Answers

Richard Hanolt
Richard Hanolt
3,726 Points

The following worked for me but it's highly unlikely that I did it the best way:

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: "My First iOS App", author: "Rick Hanolt", tag: Tag(name: "Swift"))
let postDescription = firstPost.description()
Golf Ataboonwongse
Golf Ataboonwongse
4,061 Points

Thank you very much for your advice, Richard. I could pass this code challenge using your approach. Both approaches give the same result (my version with typo correction of "Filed"), however, I do agree with you that this is not the best way.

Again, thank you very much for your help. :)

Your string says Files, not Filed. Try that.

Golf Ataboonwongse
Golf Ataboonwongse
4,061 Points

Thank you very much Bill but it still doesn't work. To pass this code challenge, I need to do as Richard said. However, both approaches give the same result.