записи

import kotlin.test.*
import java.util.*

fun main() { 
   //sampleStart 
   val map = mutableMapOf(1 to "one", 2 to "two")
val entries = map.entries
println(entries) // [1=one, 2=two]

entries.first().setValue("*ONE*")
println(entries) // [1=*ONE*, 2=two]

entries.clear()
println("map.isEmpty() is ${map.isEmpty()}") // true 
   //sampleEnd
}