Hello, World! I'm having trouble finding the correct syntax to declare an

expect

class and reflecting the constructors of the

actual

one. Here's what I'm trying to do: common:

expect class File(path: String) {
    constructor(path: File, name: String)

    fun isDirectory(): Boolean
}

jvm:

actual class File actual constructor(path: String): java.io.File(path) {
    actual constructor(path: File, name: String)
}

This results in

Primary constructor call expected

in kotlin you have to call primary constructor in your secondary for jvm, secondary constructor is not calling primary, resulting in an error

^

but the secondary constructor exists in JVM, what's the proper syntax to just "export" it?

but it does not exist in Kotlin

Could you cange the primary to a secondary?

I doubt that this way you will store semantics

should I just do a wrapper

you can just copy logic of

<http://java.io|java.io>.File

constructor

this seems to work

expect class File {
    constructor(path: String)
    constructor(path: File, name: String)

    fun isDirectory(): Boolean
}

actual class File : java.io.File {
    actual constructor(path: String):super(path)
    actual constructor(path: File, name: String):super(path, name)
}

Primary constructor is not mandatory.