edrex

See it in action at bl.ocks.org.

Inspired by Vihart's video on the same topic.

edrex

class Primes extends Iterable[Int] {
    import scala.collection.mutable.ListBuffer
    var primes = ListBuffer[Int]()
    var ints = Iterator.from(2)
    def iterator = new Iterator[Int] {
        def hasNext = true
        def next:Int = {
            ints.dropWhile(n => primes.exists(n % _ == 0))
            primes += ints.next
            primes.last

edrex

#!/usr/bin/env python
# quickly toggle between brightness levels
# put this in your path and run it using a gnome keyboard shortcut
# i have it bound to Ctrl-F5

import dbus
bus=dbus.SessionBus()
proxy=bus.get_object('org.gnome.PowerManager','/org/gnome/PowerManager/Backlight')
cl = int(proxy.GetBrightness(dbus_interface='org.gnome.PowerManager.Backlight'))
if cl < 20: