kotlin-stdlib/kotlin.system/measureTimeMillis

measureTimeMillis

inline fun measureTimeMillis(block: () -> Unit): Long(source)

Executes the given block and returns elapsed time in milliseconds.

Since Kotlin

1.0

Samples

import kotlin.system.*

fun main() { 
   //sampleStart 
   val numbers: List<Int>
val timeInMillis = measureTimeMillis {
    numbers = buildList {
        addAll(0..100)
        shuffle()
        sortDescending()
    }
}
// here numbers are initialized and sorted
println(numbers.first()) // 100

println("(The operation took $timeInMillis ms)") 
   //sampleEnd
}