如果您不希望调用者自己进行这些检查，则可以在中介函数中执行空检查，然后在出现以下情况时调用真正的实现:他们通过了:

If you don't want callers to have to do these checks themselves, you could perform null checks in an intermediary function, and then call into the real implementation when they passed:

fun test(a: Int?, b: Int?) {
    a ?: return
    b ?: return
    realTest(a, b)
}

private fun realTest(a: Int, b: Int) {
    // use params
}

这是@Alexey Romanov在下面提出的功能的实现:

here's an implementation of the function @Alexey Romanov has proposed below:

inline fun <T1, T2, R> ifAllNonNull(p1: T1?, p2: T2?, function: (T1, T2) -> R): R? {
    p1 ?: return null
    p2 ?: return null
    return function(p1, p2)
}

fun test(a: Int, b: Int) {
    println("$a, $b")
}

val a: Int? = 10
val b: Int? = 5
ifAllNonNull(a, b, ::test)

如果需要其他功能，当然需要为2、3等参数实现ifAllNonNull功能.

Of course you'd need to implement the ifAllNonNull function for 2, 3, etc parameters if you have other functions where you need its functionality.