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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2003-2009, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
// $Id$
package scala.collection
import generic._
import mutable.Builder
/** <p>
* Class <code>Linear[A]</code> represents linear sequences of elements.
* For such sequences <code>isEmpty</code>, <code>head</code> and
* <code>tail</code> are guaranteed to be efficient constant time (or near so)
* operations.<br/>
* It does not add any methods to <code>Sequence</code> but overrides several
* methods with optimized implementations.
* </p>
*
* @author Martin Odersky
* @author Matthias Zenger
* @version 1.0, 16/07/2003
* @since 2.8
*/
trait LinearSequence[+A] extends Sequence[A]
with GenericTraversableTemplate[A, LinearSequence]
with LinearSequenceLike[A, LinearSequence[A]] {
override def companion: GenericCompanion[LinearSequence] = LinearSequence
}
/**
* @since 2.8
*/
object LinearSequence extends SequenceFactory[LinearSequence] {
implicit def builderFactory[A]: BuilderFactory[A, LinearSequence[A], Coll] = new VirtualBuilderFactory[A]
def newBuilder[A]: Builder[A, LinearSequence[A]] = immutable.LinearSequence.newBuilder[A]
}
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