Hi, curious question, is there anyway in kotlin functions to force at least one of two attributes to be given? otherwise show a compile time error? example

fun foo(default: Int, a: Int = default) {
 //todo
}

//good case
foo(a = 5)
foo(default = 5)

//compilation error "at least one of the attributes should be provided"
foo()

That's more #compiler than #kotlin-native. Or maybe #arrow can do something with this? I'm not aware of anything like this in the Kotlin language itself

it won't work quite the same way, but if you have overloads instead of defaults, you can ensure that at least one is provided at compile time

hmmm, makes sense actually! my intention was to use it for multiple attributes

fun foo(default: Int, a: Int = default, b: Int = default, c: Int = default)

but following your comment, what I can do is

fun foo(a: Int, b: Int, c: Int)

fun foo(default: Int, a: Int = default, b: Int = default, c: Int = default) {
  foo(a, b, c)
}

so if you don’t provide a default, you will have to use the second function and provide all the values