You can exit a loop at any time using the break
keyword. To try this out, let’s start with a regular while
loop that counts down for a rocket launch:
var countDown = 10
while countDown >= 0 {
print(countDown)
countDown -= 1
}
print("Blast off!")
In this case, the astronaut in command gets bored part-way through the countdown and decides to skip the remainder and launch straight away:
while countDown >= 0 {
print(countDown)
if countDown == 4 {
print("I'm bored. Let's go now!")
break
}
countDown -= 1
}
With that change, as soon as countDown
reaches 4 the astronaut’s message will be printed, and the rest of the loop gets skipped.
SPONSORED ViRE offers discoverable way of working with regex. It provides really readable regex experience, code complete & cheat sheet, unit tests, powerful replace system, step-by-step search & replace, regex visual scheme, regex history & playground. ViRE is available on Mac & iPad.
Sponsor Hacking with Swift and reach the world's largest Swift community!
Link copied to your pasteboard.