caution sign

Hey Katie Blount,

Yes the ++ and -- operators will no longer be available in Swift 3.0. It would be best to stop using these operators and learn how to adapt ahead of time. You can use the += and -= operators as a sort of replacement. It's not a perfect replacement because these operators return void and they do not have prefix and postfix forms. Therefore, you will most often have to write code that is 2-3 lines using the += operator where you would normally use the ++ or -- operator on a single line.

// Swift 2 version
var initialValue = 10
let newValue = ++initalValue
print(newValue) // will print 11

// Swift 3 version
var initialValue = 10
initialValue += 1
let newValue = initalValue
print(newValue) // will print 11

As I mentioned earlier, the += does not return a value. Therefore, we can't assign the result of the operation to a variable or constant on the same line. You would have to assign the modified value to a variable or constant on the next line.

Hope this helps. Good Luck!

Hey Katie,

It's not that it's best practice not to use it (although it is because of the fact it's being deprecated), but it's more about keeping Swift modern and concise. The ++ and -- operators are being replaced with += 1 and -= 1. This is mainly because Swift doesn't have much use for these operators since they were used in C and were carried over "without much thought". Read more on why this change was made here.