gustavoamigo

implicit class RicherConditional[T](ifTrue: => T ) {
  def unless(condition: Boolean) = new WhenOrOtherwise(!condition, ifTrue)
  def when(condition: Boolean) = new WhenOrOtherwise(condition, ifTrue)
}

class WhenOrOtherwise[T] (condition: Boolean, ifTrue: => T) {
  def otherwise(ifOtherwise: => T) = if(condition) ifTrue else ifOtherwise
  def otherwiseNone = if(condition) Some(ifTrue) else None
}

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD