Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

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

brandon medellin
brandon medellin
1,776 Points

I'm having trouble with code challenge structs.swift task 2 of 2 within the "creating a simple iPhone app" course.

There are no errors with the code but results say I need to use string interpolation with the description method( which is defined in the instructions), but I thought I already did that in my code. What do I need to change???

structs.swift
struct Tag {
  let name: String
}

struct Post {

var title: String 
var author: String 
var tag: Tag 

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

} 

let firstPost = Post(title: "iOS Developement", author: "Apple", tag: Tag(name:"swift"))

let postDescription = firstPost.description()
brandon medellin
brandon medellin
1,776 Points

It specifically says "Bummer! Make sure the implementation of description matches the directions. Hint: Use string interpolation!"

brandon medellin
brandon medellin
1,776 Points

Oops my bad did not notice that.

I changed the second author to title, but it still gave me the same error, whats wrong??

2 Answers

Jeff McDivitt
Jeff McDivitt
23,970 Points

You have author in there twice in your method, one should be title

func description() -> String {
  return "\(title) by \(author). Filed under \(tag)"
}
Jeff McDivitt
Jeff McDivitt
23,970 Points

It just passed for me as

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: "iOS Developement", author: "Apple", tag: Tag(name:"swift"))

let postDescription = firstPost.description()