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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
Posted by 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.append(6)

arrayOfInts.append(7)

arrayOfInts += [8,9]

array.swift 
// Enter your code below

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

1 Answer

Joe Beltramo
Joe Beltramo
Courses Plus Student 22,191 Points

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(6)

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.