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

Posted by Rickey Paape
Rickey Paape
24,122 Points

Console error message

So while entering this code into Xcode I get an error in the console that reads: 

Playground execution failed: /var/folders/pf/44bj9s515yz8gfskt9kckxw00000gn/T/lldb/673/playground183.swift:8:18: error: cannot invoke '<' with an argument list of type
'(Int, @lvalue [String])'
while todo.count < todo {
      ~~~~~~~~~~~^~~~~~

Here is my code:

// For-in

import UIKit

var todo : [String] = ["Return calls", "Write blog", "Cook dinner", "Pickup laundry", "Buy bulbs"]

var index = 0
while todo.count < todo {
    println(todo[INDEX])
    index++
}

1 Answer

Rickey Paape
Rickey Paape
24,122 Points

I found my syntax error. The while loop should look like this: 

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