Swift Repeat/While Loop

Swift Repeat/While Loop

Use repeat { ... } while condition to run the body at least once.

Repeat/while Loop Example

This example uses a repeat/while loop to print "Try #1" and "Try #2".

var attempts = 0
repeat {
  attempts += 1
  print("Attempt #\(attempts)")
} while attempts < 3

This example demonstrates repeat (do-while style).

Runs Once Even If Condition Is False

Because repeat checks the condition after the body, it executes at least once.

var n = 0
repeat {
  print("Runs once")
} while n > 0