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iOS Swift 2.0 Collections and Control Flow Introduction to Collections Working with Arrays

Posted by Ashley Boucher
Ashley Boucher
407 Points

Last challenge question help needed

I am confused as to what is meant by "assign the result to a constant..." What exactly is meant by the result?

arrays.swift 
// Enter your code below
var arrayOfInts: [Int] = [1, 2, 3, 4, 5, 6]

arrayOfInts.append(7) 

arrayOfInts += [8]

let value = arrayOfInts [4]

arrayOfInts.removeAtIndex(5)
let discardedValue = arrayOfInts [6]
Piotr Nejman
Piotr Nejman
3,374 Points

Can you paste the instructions?

Ashley Boucher
Ashley Boucher
407 Points

Oh yeah, here they are:

"For this task, remove the 6th item from the array and assign the result to a constant named discardedValue. To remove an item, use method removeAtIndex() and put the number in between parenthesis that you want to remove. "

1 Answer

Keli'i Martin
Keli'i Martin
8,227 Points

The .removeAtIndex() function will not only remove the value from the given index, but also return that value. So what you can do is

let discardedValue = arrayOfInts.removeAtIndex(5)

Hope this helps!

Ashley Boucher
Ashley Boucher
407 Points

Ahhhh yes! Thank you!