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iOS Swift Collections and Control Flow Introduction to Collections Working With Arrays

Paolo Di Donato
Paolo Di Donato
4,945 Points

Error caused in challenge 2 of 4 from code in challenge 1 of 4.. after passing challenge 1 with no problems..

I have passed step 1 in collections and control flow - when I am doing the testing I seem to challenge task 1 with no problems but when I go to submit challenge 2 of 4 I get an error the there is something wrong in step 1.. So I go back to challenge 1, resubmit and go to challenge 2 and the same thing continues to happen..

Is there a problem on treehouses end? I put the code into playground and there are no issues with it.

var arrayOfInts: [Int] = [0,1,2,3,4,5]



arrayOfInts += [8,9]

// Enter your code below

var arrayOfInts = [0, 1, 2, 3, 4, 5]

1 Answer

So the question is actually asking you to add a single item via the append method and a single item via concatenation

There isn't an issue with your code or treehouse, just with what the questions is asking.

So per your code:

var arrayOfInts: [Int] = [0,1,2,3,4,5]


arrayOfInts.append(7) // This line is not needed

arrayOfInts += [8,9] // You should only concat a single value such as [8]

Give that a try.