import java.util.*
import kotlin.system.measureNanoTime


// measuring different ways of cloning a map
// tolist_tomap: 100 rounds 14032511 ns, 140325 per round
// time_hashmap: 100 rounds 4515198  ns,  45151 per round

fun main(args: Array<String>) {
    println("measuring different ways of cloning a map")

    val map = (0..100).associateBy({"$it"}, {"---$it----"})

    val clones = mutableListOf<Map<String, String>>()

    val N = 100

    val time_tolist_tomap = measureNanoTime {
        for(i in 1..N) {
            clones.add(map.toList().toMap())
        }
    }

    println("tolist_tomap: $N rounds $time_tolist_tomap ns, ${time_tolist_tomap / N} per round")

    clones.clear()

    val time_hashmap = measureNanoTime {
        for(i in 1..N) {
            clones.add(HashMap(map))
        }
    }

    println("time_hashmap: $N rounds $time_hashmap ns, ${time_hashmap / N} per round")
}