如何在Kotlin中克隆对象? [英] How to clone object in Kotlin?

问题描述

问题就这么简单.

Kotlin文档仅在访问Java和枚举类中描述克隆.在后一种情况下，克隆只是引发异常.

Kotlin documentation describes cloning only in accessing Java and in enum class. In latter case clone is just throwing an exception.

那么，我/应该如何克隆任意的Kotlin对象?

So, how would I / should I clone arbitrary Kotlin object?

我应该像在Java中那样使用clone()吗?

Should I just use clone() as in Java?

推荐答案

对于data class，您可以使用编译器生成的

For a data class, you can use the compiler-generated copy() method. Note that it will perform a shallow copy.

要创建集合的副本，请使用toList()或toSet()方法，具体取决于所需的集合类型.这些方法总是创建一个新的集合副本.他们还会执行浅表复制.

To create a copy of a collection, use the toList() or toSet() methods, depending on the collection type you need. These methods always create a new copy of a collection; they also perform a shallow copy.

对于其他类别，没有Kotlin特定的克隆解决方案.如果满足您的要求，可以使用.clone()；如果不合适，可以使用其他解决方案.

For other classes, there is no Kotlin-specific cloning solution. You can use .clone() if it suits your requirements, or build a different solution if it doesn't.

这篇关于如何在Kotlin中克隆对象?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IT屋！