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Kotlin 编程实践
book

Kotlin 编程实践

by Ken Kousen
July 2020
Intermediate to advanced
235 pages
3h 37m
Chinese
China Machine Press
Content preview from Kotlin 编程实践
18
1
讨论
kotlinc 命令支持一系列的命令行选项,其中一种允许 Kotlin 作为脚本语言使用。使
Kotlin 源代码编写的
脚本
文件(其中包含可执行代码)拥有
.kts
文件扩展名。
举个简单的例子,示例 1-5 中的文件
southpole.kts
显示了南极的当前时间,并打印当前
是否处于夏令时。该脚本使用了 Java 8 中新增的
java.time
包。
示例 1-5
southpole.kts
import java.time.*
val instant = Instant.now()
val southPole = instant.atZone(ZoneId.of("Antarctica/South_Pole"))
val dst = southPole.zone.rules.isDaylightSavings(instant)
println("It is ${southPole.toLocalTime()} (UTC${southPole.offset})
at the South Pole")
println("The South Pole ${if (dst) "is" else "is not"}
on Daylight Savings Time")
使用 kotlinc -script 命令执行该文件:
> kotlinc -script southpole.kts
It is 10:42:56.056729 (UTC+13:00) at the South Pole ...
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Publisher Resources

ISBN: 9787111659624