0x00 Lesson
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
0x01 我的小作品
欢迎体验我的作品之一:小编辑器-XCompiler
在线编辑器~小而巧
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