<https://pl.kotl.in/lkskQc2rY> is there anything t...

# announcements

[arekolek]

https://pl.kotl.in/lkskQc2rY
is there anything the compiler could do to make this work?

enum class Foo {
    ONE, TWO
}

fun fooArray(foos: Array<Foo>) {
    println(foos.toList())
}

fun fooVararg(vararg foos: Foo) {
    fooArray(foos) // Type mismatch: inferred type is Array<out Foo> but Array<Foo> was expected
}

in case of final classes (including enums), it's weird that vararg should make the Array have out variance

I'm wondering if there's any sense in filing a youtrack issue

[David Eriksson]

Why not change fooArray to take Array<out Foo>?

[David Eriksson]

See also https://stackoverflow.com/questions/56803193/why-kotlins-types-vararg-is-treated-as-arrayout-type-and-not-arraytype

[arekolek]

Why not change fooArray to take Array<out Foo>?

Because fooArray is from a dependency I have. But I suggested that to the authors.

[arekolek]

I'm just wondering if it even makes sense for the compiler to try to be "smart" in case of final classes.

[David Eriksson]

Just write an extension function to convert the array

[arekolek]

What I did was to just use arrayOf(*foos) and it does the job, so that's not a problem