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Start your free trialVera Hsu
997 Pointsinstance method code challenge
I got this write on Xcode. But the Bummer said "Make sure you're declaring an instance method named description that returns a string". I really don't know what is wrong with my code. Please help, any help would be great.
struct Tag {
let name: String
}
struct Post {
let title: String
let author: String
let tag: Tag
init (title: String, author: String, name: String){
self.title = title
self.author = author
self.tag = Tag(name: name)
}
func description () -> String {
return "\(title) by \(author). Filed under \(tag.name)"
}
}
let firstPost = Post(title: "iOSDevelopment", author: "Apple", name: "swift")
let postDescription = firstPost.description()
1 Answer
Keli'i Martin
8,227 PointsThat is strange. Your code should work. I'm gonna chalk this one up to the challenge editor getting wonky. I've noticed this happen a bunch of times. Besides the editor being very picky about things that shouldn't matter, like white space, sometimes, it gets into a state where no matter what you change, it just doesn't work.
I solved the challenge using the following code:
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()
Basically the only difference between yours and mine is that I didn't bother with an initializer for the Post struct. But that shouldn't matter.
Vera Hsu
997 PointsVera Hsu
997 Pointsthanks for your explicit explanation! I passes with your code. But I am wondering why don't we need initializer for the Post struct???
Keli'i Martin
8,227 PointsKeli'i Martin
8,227 PointsWith structs, the initializer is basically built in. Pasan talks about it back in the Object-Oriented Swift 2.0 course, in the lesson about Instances of Objects .