Unable to get the Tag element to work

I totally got stuck on this as well. And the web compiler didn't give much direction. The code you have works, you can put it in a playground and it will run. But what you want is for it to display the string iOSDevelopment by Apple. Filed under swift which I think it checks for. To fix this, remember that your Tag has a property called name. Even though the tag you set the init for has the name assigned to it, using it returns the full Tag struct of Tag(name: "swift"). If you type in tag in the playground, you can use the dot notation to pull up the name property that is assigned in the tag property you created. You should be able to get something like this:

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()

Try that and see if it works.

// UPDATED: 

Ok, I got it now. I had to go back and double check what was actually being asked. And again, you did just what I did. This challenge isn't asking for that custom init method that you have in there. It just asked that you make a constant called tag of type Tag. So, if you remove that init method and just put in the line of code like this:

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

Then that should work. Here we are not initializing the tag constant but passing it a value of type Tag when we assign it I think.

So try that. Remove the init and update that assignment line. Should work now.