davidreuss

#!/bin/bash

# Default variable if not set

[ -z "${var:-}" ] && var="Default..."

echo "$var"

# array declaration

ryanlecompte

import scala.collection._
import com.twitter.util._

scala> val buffer = mutable.ArrayBuffer.empty[Int]
scala> println(Time.measure { (0 to 50000000).foreach { buffer += _ } }.inMillis)
17610

scala> var vector = immutable.Vector.empty[Int]
scala> println(Time.measure { (0 to 50000000).foreach { vector :+= _ } }.inMillis)
7865

joeyism