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Start your free trialJohnny Nguyen
3,875 PointsChallenge Task 2 of Creating a Queue
When adding isEmpty stored property, I'm not sure why I'm getting it wrong
struct Queue<Element> {
var array: [Element]
var isEmpty: Bool {
return array.isEmpty
}
}
2 Answers
rydavim
18,814 PointsI don't know any Swift, so I'm going to have trouble explaining why it works the way it seems to but I'll give it a shot. Assuming you're working on Task 2, it looks like you'll need to manually work out what is returned.
struct Queue<Element> {
var array = [Element]()
var isEmpty: Bool {
// check boolean value using an if statement
// if true, return true else return false
}
}
I don't know why the challenge wants you to do it this way. While I can't say for sure as I'm not familiar with the language, it seems to me like your code should work fine assuming isEmpty
returns a boolean.
Sometimes challenges want your solution in a specific format and may not pass even if your end result is correct. I would try testing your code in workspaces or your own environment and see if you get the results you expect. If so, they're likely looking for a specific solution. If not, there's something else going on with your isEmpty
test.
Sorry I can't be of more help, but hopefully that gives you an idea of how to progress. Good luck, and happy coding!
Johnny Nguyen
3,875 PointsThank you.
Johnny Nguyen
3,875 PointsJohnny Nguyen
3,875 PointsI put the code in Xcode and it works fine. I have try multiple ways to check if the array is empty but they don't also work. Thanks for your reply anyway.
rydavim
18,814 Pointsrydavim
18,814 PointsIn the interest of getting you through to the next step, the following code seems to work for the purposes of the challenge. (Note that as far as I can tell, the way you're doing it seems not only fine, but probably better.)