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Start your free trialWilliam Hartvedt Skogstad
5,857 PointsNone of these lines work, don't know if there's something wrong with the site..
Challenge Task 2 of 2
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
struct Tag {
let name: String
}
struct Post {
let title: String
let author: String
var tag: Tag
func description() -> String {
return "\(title) by \(author). Filed under \(tag)"
}
}
let firstPost = Post(title: "iOSDevelopment", author: "Apple", tag: Tag(name: "Swift"))
let postDescription = firstPost.description()
// let firstPost = Post(title: "iOSDevelopment", author: "Apple", tag: Tag(name: "swift")).description()
// let postDescription = firstPost
2 Answers
Frezy Mboumba
3,642 PointsOk I see why The compiler refuses your code. It seems like you are encountering a problem in the second task of the challenge. First of all, you made a mistake in the writing of the method description. I f you try to run the same code in Playground you will figure out what you've done wrong. Your description method is:
<p>func description() -> String {
return "\(title) by \(author). Filed under \(tag)"
}</p>
```
But it should be this:
```html
<p>func description() -> String {
return "\(title) by \(author). Filed under \(tag.name)"
}</p>
```
You have just forgotten to access the **name** property out of the **tag** parameter. It looks like you were trying to return a struct as a String. Notice that **tag** is not equal to **tag.name**. **tag** is of type **Tag** and is a struct while **tag.name** is a String.
this is how it should look :
```html
<p>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.name)"
}
}
let firstPost = Post(title: "iOS Development", author: "Apple", tag: Tag(name: "swift"))
let postDescription = firstPost.description()
</p>
```
Hope that's gonna be helpful.
William Hartvedt Skogstad
5,857 PointsThanks a lot! That really cleared things up
Reed Carson
8,306 PointsI remember getting tripped up on this. Remember the var: tag isn't a string like author and title, its an instance of the Tag struct. you need to call tag.name to get the string, calling just tag doesn't return a string.
William Hartvedt Skogstad
5,857 PointsWilliam Hartvedt Skogstad
5,857 PointsIf I do this:
I get an error message saying "Oops! It looks like Task 1 is no longer passing."