Swift中的标签的使用

最新推荐文章于 2018-11-15 10:57:03 发布

Llingmiao

最新推荐文章于 2018-11-15 10:57:03 发布

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分类专栏： Swift语法

版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。

本文链接：https://blog.youkuaiyun.com/Llingmiao/article/details/79840466

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本文通过一个具体的Swift代码示例展示了如何使用循环结构，并结合break语句提前退出循环的方法。代码中通过switch语句根据不同条件打印出不同的信息，并在特定条件下使用break来结束循环。

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标签表明循环的是归属哪一段

import Foundation

// break from a loop

var i = 0

loopa: while(i < 100) {

switch(i) {

case 1...10:

print("This is between 1 to 10")

case 11...20:

print("This is between 11 to 20")

case 21...30:

print("This is between 21 to 30")

case 31...40:

print("This is between 31 to 40")

break loopa

case 41...50:

print("This is between 41 to 50")

default:

print("This is more than 50")

}

i += 1

}

输出：

This is more than 50

This is between 1 to 10

This is between 1 to 10

This is between 1 to 10

This is between 1 to 10

This is between 1 to 10

This is between 1 to 10

This is between 1 to 10

This is between 1 to 10

This is between 1 to 10

This is between 1 to 10

This is between 11 to 20

This is between 11 to 20

This is between 11 to 20

This is between 11 to 20

This is between 11 to 20

This is between 11 to 20

This is between 11 to 20

This is between 11 to 20

This is between 11 to 20

This is between 11 to 20

This is between 21 to 30

This is between 21 to 30

This is between 21 to 30

This is between 21 to 30

This is between 21 to 30

This is between 21 to 30

This is between 21 to 30

This is between 21 to 30

This is between 21 to 30

This is between 21 to 30

This is between 31 to 40

Program ended with exit code: 0

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