A question about Kotlin extension functions resolution

Question

The code below :

package experimental

import experimental.AnObject.f

interface AnInterface {
    fun String.a() = "[AnInterface] $this"
}

object AnObject {
    fun AnInterface.f(str: String) = "[AnObject]" + str.a()
}

class AnInterfaceImpl  : AnInterface

fun main() {
    println( AnInterfaceImpl().f("hi") ) 
}

prints [AnObject][AnInterface] hi

My question is, how does the call to AnInterfaceImpl().f ends up resolved to the extension function in AnObject

question from:https://stackoverflow.com/questions/65643088/a-question-about-kotlin-extension-functions-resolution

Answer 1

Waitting for answers