July 2020
Intermediate to advanced
235 pages
3h 37m
Chinese
Content preview from Kotlin 编程实践
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安装并运行
Kotlin
｜
21
kotlin HelloKt 0.13s user 0.05s system 112% cpu 0.157 total
~/Documents/kotlin
> time java -jar hello.jar
Hello, World!
java -jar hello.jar 0.08s user 0.02s system 99% cpu 0.106 total
~/Documents/kotlin
> time ./hello
Hello, World!
./hello 0.00s user 0.00s system 59% cpu 0.008 total
相对值将说明问题。尽管 JAR 文件比直接运行 kotlin 快一些，但原生映像实际上要快
一个数量级。在本示例中，只需要大约 8 毫秒即可运行。
如果你是 Gradle 用户，你可以使用名为 grade-graal 的 GraalVM 插件。它
会将一个原生镜像任务（和其他任务）添加到你的构建中。查看该插件的网站
主页（
https://oreil.ly/3eY3Y
）以获知更多细节。
1.7
为
Gradle
添加
Kotlin
插件（
Groovy
语 法）
问题
如何使用 Groovy 领域特定语言（DSL）语法将 Kotlin 插件添加到 Gradle 构建中。
解决方案
通过在构建文件中使用 Groovy DSL 标签添加 Kotlin 依赖与插件。
讨论
本节将使用 Groovy DSL 操作 Gradle。1.8 节将展示如何使用 ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.