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iOS Swift Basics (retired) Control Flow While and Do-While Loop

Marco Greselin
Marco Greselin
906 Points
Posted by Marco Greselin
Marco Greselin
906 Points

Works on Xcode

Why doesn't it work here?

while_loops.swift 
let numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

index = 0

while index < numbers.count {
  println(numbers[index])
  index++
}

2 Answers

William Li
PLUS
William Li
Courses Plus Student 26,868 Points
William Li
William Li
Courses Plus Student 26,868 Points

you need a var keyword for variable declaration in Swift.

var index = 0

Also, in the future if your code doesn't compile or returns an error, you can always click the Preview button, it'll show you an error log that is very valuable when it comes to debugging the code.

Imgur

Hope that helps.