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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2002-2009, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
// $Id: Collection.scala 12340 2007-07-17 15:29:47Z mcdirmid $
package scalax.collection
/** Variant of <code>Iterable</code> which also demands
* implementation of a `size` method.
* Basically, this trait just adds size to Iterable,
* and provides an optimized implementation of toArray based on it.
*
* @author Martin Odersky
* @version 2.8
*/
trait SizedIterable[+A] extends Iterable[A] {
/** Returns the number of elements in this collection.
*
* @return number of collection elements.
*/
def size : Int
/** Converts this iterable to a fresh Array with <code>size</code> elements.
*/
override def toArray[B >: A]: Array[B] = {
val result = new Array[B](size)
copyToArray(result, 0)
result
}
}
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