Is there a proposal in Kotlin to allow primary constructor parameters without val to be used as priv...

# random

[Jason5lee]

Is there a proposal in Kotlin to allow primary constructor parameters without val to be used as private val? In C#, primary constructor parameters can be implemented either as simple constructor arguments or with private backing fields, depending on how they are used. What are your thoughts on this approach?

[ephemient]

that would be a breaking change

[ephemient]

val x = 0
class Foo(x: Int) {
    fun frob() = println(x)
}

in current Kotlin, Foo(1).frob() prints 0
if it were silently upgraded to

class Foo(private val x: Int) {
    fun frob() = println(x)
}

then Foo(1).frob() would print 1

[ephemient]

I don't think it makes sense when we already have a sensible way to express private val either

[Jason5lee]

Didn't know the breaking change. It makes sense.