scala> import scala.collection.mutable._

scala> var a = ArrayBuffer(0,0,0)
a: scala.collection.mutable.ArrayBuffer[Int] = ArrayBuffer(0, 0, 0)

scala> a.padTo(5, 0)
res56: scala.collection.mutable.ArrayBuffer[Int] = ArrayBuffer(0, 0, 0, 0, 0)

scala> a.length
res57: Int = 3 /// EXPECTED: 5

scala> a(4)
java.lang.IndexOutOfBoundsException: 4
        at scala.collection.mutable.ResizableArray$$class.apply(ResizableArray.scala:42)
        at scala.collection.mutable.ArrayBuffer.apply(ArrayBuffer.scala:26)
        at .<init>(<console>:9)
        at .<clinit>(<console>)
        at RequestResult$$.<init>(<console>:4)
        at RequestResult$$.<clinit>(<console>)
        at RequestResult$$result(<console>)
        at sun.reflect.NativeMethodAccess...
/// EXPECTED: should work