blob: 4abccd38275e180885c13c15266bdd8abd3e6d35 (
plain) (
blame)
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
27
28
29
30
31
32
33
34
35
36
|
/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2006-2011, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
package scala.collection
package generic
import mutable.{Builder, SetBuilder}
import scala.language.higherKinds
/** A template for companion objects of Set and subclasses thereof.
*
* @since 2.8
*/
abstract class SortedSetFactory[CC[A] <: SortedSet[A] with SortedSetLike[A, CC[A]]] {
type Coll = CC[_]
def empty[A](implicit ord: Ordering[A]): CC[A]
def apply[A](elems: A*)(implicit ord: Ordering[A]): CC[A] = (newBuilder[A](ord) ++= elems).result
def newBuilder[A](implicit ord: Ordering[A]): Builder[A, CC[A]] = new SetBuilder[A, CC[A]](empty)
implicit def newCanBuildFrom[A](implicit ord : Ordering[A]) : CanBuildFrom[Coll, A, CC[A]] = new SortedSetCanBuildFrom()(ord);
class SortedSetCanBuildFrom[A](implicit ord: Ordering[A]) extends CanBuildFrom[Coll, A, CC[A]] {
def apply(from: Coll) = newBuilder[A](ord)
def apply() = newBuilder[A](ord)
}
}
|