src/library/scala/collection/generic/Companion.scala


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26

/*                     __                                               *\
**     ________ ___   / /  ___     Scala API                            **
**    / __/ __// _ | / /  / _ |    (c) 2003-2009, LAMP/EPFL             **
**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
** /____/\___/_/ |_/____/_/ | |                                         **
**                          |/                                          **
\*                                                                      */
// $Id: Traversable.scala 15188 2008-05-24 15:01:02Z stepancheg $
package scala.collection.generic

abstract class Companion[+CC[X] <: Traversable[X]] {
  type Coll = CC[_]

  def newBuilder[A]: Builder[A, CC[A]]

 /** The empty iterable of type CC */
  def empty[A]:  CC[A] = newBuilder[A].result

  /** Creates an iterable of type CC with specified elements */
  def apply[A](args: A*): CC[A] = {
    val b = newBuilder[A]
    b ++= args
    b.result
  }
}