time.scala

def time[R](what: String)(block: => R): R = {
    val t0     = java.lang.System.nanoTime()
    val result = block
    val ms     = (java.lang.System.nanoTime() - t0) / 10e5.toInt
    println(s"$what completed. Time elapsed: ${ms}ms")
    result
  }

def t[R](block: => R): R = {
    val t0     = java.lang.System.nanoTime()
    val result = block
    val ms     = (java.lang.System.nanoTime() - t0) / 10e5.toInt
    println(s"Time elapsed: ${ms}ms")
    result
  }