Progress bar in scala. Simulates a line with progress feedback of an action in the console

ProgressBarExample.scala

import scala.util.Random

object ProgressBar extends App {
    // list of times to sleep between each step of the progess, with different probabilities
    val timesToSleep = List(500, 500, 500, 500, 600, 600, 600, 1000, 1000, 1000, 2000, 2000, 5000)
    
    print("Progress [          ]")
    Thread.sleep(500);
    
    // 11 backspaces to override "          ]"
    (1 to 11).foreach(_ => print("\b")) 

    for (i <- 1 to 10) {

        val time = Random.shuffle(timesToSleep).head

        // every dot means a 10%
        print(".")
        // we fill the gap between the dot and the place
        // the the closing bracket should go
        (1 to (10 - i)).foreach(_ => print(" "))

        // print the closing bracket and the percentage accomplished.
        // remember wach step is a 10%
        print("] " + (i * 10) + "%")

        // no we have to go back to the last point printed, that is
        // 15 caracters in total for the "          ] xx%" minus the 
        // number of dots printed
        (1 to (15 - i)).foreach(_ => print("\b"))       
        Thread.sleep(time)
    }

    println()
    println("Done!")
}

ProgressBar.main(Array(""))