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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2003-2009, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
// $Id$
package scala.collection.generic
import scala.collection._
import annotation.unchecked.uncheckedVariance
import scala.util.control.Breaks._
// import immutable.Stream // !!!
/** <p>
* A template trait for iterable collections.
* </p>
* <p>
* Collection classes mixing in this trait provide a method
* <code>iterator</code> which returns an iterator over all the
* elements contained in the collection. They also provide a method
* <code>newBuilder</code> which creates a builder for collections of the
* same kind.
* </p>
* <p>
* This trait implements <code>Traversable</code>'s <code>foreach</code>
* method by stepping through all elements. Subclasses of <code>Iterable</code>
* should re-implement <code>foreach</code> with something more efficient,
* if possible.
* </p>
* <p>
* This trait adds methods <code>iterator</code>, <code>sameElements</code>,
* <code>takeRight</code>, <code>dropRight</code> to the methods inherited
* from trait <a href="../Traversable.html" target="ContentFrame">
* <code>Traversable</code></a>.
* </p>
*
* @author Martin Odersky
* @version 2.8
*/
trait IterableTemplate[+A, +This <: IterableTemplate[A, This] with Iterable[A]]
extends TraversableTemplate[A, This]
with IterableLike[A, This]
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