问题描述
当我注意到RuntimeException有两个选项时，我正在编写一些代码，并且会抛出RuntimeException作为默认值，一个选项来自java.lang，另一个来自kotlin:
I was writing some code and was going to throw a RuntimeException as a default for something, when I noticed that there are two options for RuntimeException - one from java.lang and one from kotlin:
在kotlin版本中，还有其他所有以相同方式工作的方法:
Inside the kotlin version of this, there's an entire list of other methods which work the same way :
因此，据我了解，软件包kotlin中的一个只是Java等效项的别名(如果我输入错了，请更正)，这导致我想到了一个问题:
So, from my understanding of this, the one from package kotlin is simply an alias for the java equivalent (correct me if I'm wrong) which leads me to the question :
拥有此别名文件有什么意义，何时应在标准" java等效项上使用它?这是否可以节省一些进口商品?
what is the point of having this alias file and when should you use it over the "standard" java equivalent ? Does this simply save a few imports ?
推荐答案
使用JDK时，它们映射到JDK类.当使用Kotlin for Javascript时，它们将映射到Kotlin Javascript库中的特定实现.关于actual和expect的文档此处.
When using the JDK, these map to JDK classes. When using Kotlin for Javascript, they would map to a specific implementation in the Kotlin Javascript library. Documentation about actual and expect here.
要回答您的问题，如果您有可能将代码移植到其他平台上，请始终使用kotlin.变体.否则，没关系.
To answer your question, if there's a chance of you porting your code to also work on another platform, always use the kotlin. variant. Otherwise, it doesn't matter.
这篇关于来自Kotlin包的RuntimeException用例的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！