July 2020
Intermediate to advanced
235 pages
3h 37m
Chinese
Content preview from Kotlin 编程实践
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188
｜
第
11
章
contain underscores。”（函数名称不应包含下划线）
另一方面，你可以在测试中使用任何一种机制，并且这也算 Kotlin 的习惯用法（如
Coding Conventions guide
（编码约定指南）（
https://oreil.ly/xIguq
）中所示）。因此，示例
11-35 中展示的示例很棒。
示例 11-35：测试函数名称可以使用任何一种技巧
class FunctionNamesTest {
@Test
fun `backticks make for readable test names`() {
// ...
}
@Test
fun underscores_are_fine_here_too() {
// ...
}
}
或者更好的是，提供的可读名称将显示在测试报告中，任何使测试更清晰、更轻松的办
法都是一件好事。
11.12
告知
Java
处理异常
问题
如何使 Kotlin 函数抛出 Java 可识别的受检异常？需要手动告知 Java。
解决方案
在函数签名上使用 @Throws 注解。
讨论
Kotlin 中的所有异常均被视为非受检异常，这意味着编译器不会要求你处理它们。如果
你想捕获异常，可以很容易地将 try/catch/finally 代码块添加到 Kotlin 函数中，但不是必
须这样做。
Kotlin 没有 throws 关键字，而 Java 用它声明一个会抛出异常的方法。
其他
｜
189
除非你尝试从 Java 调用该函数，否则没这个必要
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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.