如何将vararg作为数组传递给Kotlin? [英] How to pass vararg as array to function in Kotlin?

问题描述

我想将vararg从buy函数传递给drive函数 但我得到

I want to pass vararg from the buy function to the drive function but I get

编译错误:

required Array<T> found Array<out T>

代码:

class Car

fun buy(vararg cars: Car) {
    drive(cars) //compile error
}

fun drive(cars: Array<Car>) {
    //...
}

推荐答案

另一种解决方案是将drive更改为fun drive(Array<out Car>) { ... }.当然，这意味着无法修改驱动器内的汽车，但避免了复制.

Another solution would be to change drive to fun drive(Array<out Car>) { ... }. This of course means that the cars inside drive cannot be modified but avoids the copying.

这篇关于如何将vararg作为数组传递给Kotlin?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！