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

Stuck on task 4

I'm stuck on this challenge. This is my answer to task 4

arrayOfInts.removeAtIndex(5) let discardedValue = arrayOfInts

It says "Make sure you're removing the 6th item from array at index 5! I have done this. Also when I click on preview the area shows blank.

Please give me some help. I'm puzzled!

arrays.swift
// Enter your code below
var arrayOfInts = [1, 2, 3, 4, 5, 6]
arrayOfInts.append(7)
arrayOfInts += [8]
let value = arrayOfInts [4]
arrayOfInts.removeAtIndex(5)
let discardedValue = arrayOfInts

2 Answers

Stone Preston
Stone Preston
42,016 Points

According to the Swift documentation ,

you remove an item from the array with the removeAtIndex(_:) method. This method removes the item at the specified index and returns the removed item (although you can ignore the returned value if you do not need it):

removeAtIndex returns the item that was removed. So you can set the value of the constant and remove the item at index 5 in one line

// Enter your code below
var arrayOfInts = [1, 2, 3, 4, 5, 6]
arrayOfInts.append(7)
arrayOfInts += [8]
let value = arrayOfInts [4]
let discardedValue = arrayOfInts.removeAtIndex(5) // the method returns the item that was removed

Thanks heaps Man! You are my saviour