isEmpty

import kotlin.math.*
import kotlin.test.*

fun main() { 
   //sampleStart 
   val collection: MutableCollection<Int> = mutableListOf(1, 2, 3)

println(collection.size) // 3
println("collection.isEmpty() is ${collection.isEmpty()}") // false

collection.clear()
println(collection.size) // 0
println("collection.isEmpty() is ${collection.isEmpty()}") // true 
   //sampleEnd
}