Is there a way to reference member extension function ``` cl kotlinlang #announcements

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Title

m

marcinmoskala

04/24/2019, 6:50 AM

Is there a way to reference member extension function?

class A
class B {
    fun A.update(i: Int) {}
}

g

gildor

04/24/2019, 6:53 AM

Yes,

val b = B()
with(b) {
  A().update(42)
}

🧐 1

p

pablisco

04/24/2019, 9:04 AM

Very useful to scope extension functions so they don’t run wild on the global scope 🙂 Specially if

is an interface

m

marcinmoskala

04/24/2019, 10:22 AM

@gildor This is use. Can we reference it?

For instance, for normal or inner we can reference either using normal or bounded:

class B {
    fun fizz() {}
    inner class C {
        fun buzz() {}
    }
}

fun main() {
    val ref1 = B::fizz
    val ref2 = B()::fizz
    val ref3 = B.C::buzz
    val ref4 = B().C()::buzz
}

g

gildor

04/24/2019, 10:27 AM

Method reference doesn’s supported for member extension functions

m

marcinmoskala

04/24/2019, 12:55 PM

Great, that what I wanted to know 🙂

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