【Swift 60秒】30 - While loops

0x00 Lesson

A second way of writing loops is using ​​while​​​: give it a condition to check, and its loop code will go around and around ​​until​​​ the condition ​​fails​​.

For example, we could use a ​​while​​ loop to simulate a child counting in a game of hide and seek: we start at one, count up to and including 20 while printing each number out, then after the loop print “Ready or not”.

Here’s how that looks in Swift:

var number = 1
while number <= 20 {
  print (number)
  number += 1
}
print ("Ready or not, here I come!")

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