If I have a function that takes a `vararg String` ...

# multiplatform

[eygraber]

If I have a function that takes a vararg String is there any way to have that use a variadic function instead of KotlinArray on iOS?

I imagine no because the vararg is an array, but I'm wondering if anyone has any ideas.

My iOS team doesn't want to use KotlinArray so I'm providing a Set<String> overload for them, but it's not ideal.

[Jeff Lockhart]

You can write a Swift extension that takes a variadic parameter, converts it to a KotlinArray and calls the Kotlin function. I've done this in a few places to smooth out the Swift API with extension functions.

[Jeff Lockhart]

I've also done this with Swift static func extensions which call KotlinClass.companion, until something similar to @JvmStatic for native is available.

[Jeff Lockhart]

This is my Swift.Array.toKotlinArray() extension used in these other variadic extensions:

extension Swift.Array where Element: AnyObject {

    func toKotlinArray() -> KotlinArray<Element> {
        KotlinArray<Element>(size: Int32(count)) {
            self[$0.intValue]
        }
    }
}