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

Brook Wolcott
Brook Wolcott
874 Points
Posted by Brook Wolcott
Brook Wolcott
874 Points

How do I remove an item from an array?

I am working on a challenge asking me to use the removeAtIndex() method to remove the 6th item (index 5) from an array. Since removeAtIndex() has been replaced in Swift 3, I cannot test my code in XCode. However, I have reviewed it about 50 times now and I can't find a problem.

Can anyone tell me when I keep getting a "Bummer" message saying to make sure I remove the 6th item from Index 5?

arrays.swift 
// Enter your code below

var arrayOfInts = [12, 13, 24, 55, 44, 7]

arrayOfInts.append(77)
arrayOfInts = arrayOfInts + [23]

let value = arrayOfInts[4]

arrayOfInts.removeAtIndex(5)

let discardedValue = (arrayOfInts)

1 Answer

Damien Watson
Damien Watson
27,419 Points
Damien Watson
Damien Watson
27,419 Points

Hey Brook, the wording is a bit tricky.

It's saying to remove the 6th value and place that value (the 6th you have removed) into the 'discardedValue'. The return value for '.removeAtIndex()' is the item removed.

let discardedValue = arrayOfInts.removeAtIndex(5)
Brook Wolcott
Brook Wolcott
874 Points
Brook Wolcott
Brook Wolcott
874 Points

Ahh... that makes more sense. Thanks, Damien!