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authorPaul Phillips <paulp@improving.org>2012-04-20 01:00:24 +0100
committerPaul Phillips <paulp@improving.org>2012-04-24 19:59:27 -0700
commit1d0372f84f9a7325a47beb55169cc454895ef74b (patch)
tree920b95193b2cbb63b75517d67c668eda1d563a06 /src/library/scala/Tuple2.scala
parent211df62491ada71a4a574fd2314942ab3c4a4ba8 (diff)
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Moved ancillary methods off specialized traits.
Moved compose/andThen off Function1, curried/tupled off Function2. Pushed Tuple2 zipped into auxiliary class. Created implicits to plaster over the changes. This drops several hundred classfiles and takes (unoptimized) scala-library.jar from 7.8 Mb to 7.4 Mb.
Diffstat (limited to 'src/library/scala/Tuple2.scala')
-rw-r--r--src/library/scala/Tuple2.scala114
1 files changed, 0 insertions, 114 deletions
diff --git a/src/library/scala/Tuple2.scala b/src/library/scala/Tuple2.scala
index 37ab564c3c..924b2b6fe3 100644
--- a/src/library/scala/Tuple2.scala
+++ b/src/library/scala/Tuple2.scala
@@ -9,9 +9,6 @@
package scala
-import scala.collection.{ TraversableLike => TLike, IterableLike => ILike }
-import scala.collection.generic.{ CanBuildFrom => CBF }
-
/** A tuple of 2 elements; the canonical representation of a [[scala.Product2]].
*
@@ -30,115 +27,4 @@ case class Tuple2[@specialized(Int, Long, Double, Char, Boolean, AnyRef) +T1, @s
*/
def swap: Tuple2[T2,T1] = Tuple2(_2, _1)
- @deprecated("Use `zipped` instead.", "2.9.0")
- def zip[Repr1, El1, El2, To](implicit w1: T1 => TLike[El1, Repr1],
- w2: T2 => Iterable[El2],
- cbf1: CBF[Repr1, (El1, El2), To]): To = {
- zipped map ((x, y) => ((x, y)))
- }
-
- /** Wraps a tuple in a `Zipped`, which supports 2-ary generalisations of `map`, `flatMap`, `filter`, etc.
- * Note that there must be an implicit value to convert this tuple's types into a [[scala.collection.TraversableLike]]
- * or [[scala.collection.IterableLike]].
- * {{{
- * scala> val tuple = (List(1,2,3),List('a','b','c'))
- * tuple: (List[Int], List[Char]) = (List(1, 2, 3),List(a, b, c))
- *
- * scala> tuple.zipped map { (x,y) => x + ":" + y }
- * res6: List[java.lang.String] = List(1:a, 2:b, 3:c)
- * }}}
- *
- * @see Zipped
- * Note: will not terminate for infinite-sized collections.
- */
- def zipped[Repr1, El1, Repr2, El2](implicit w1: T1 => TLike[El1, Repr1], w2: T2 => ILike[El2, Repr2]): Zipped[Repr1, El1, Repr2, El2]
- = new Zipped[Repr1, El1, Repr2, El2](_1, _2)
-
- /**
- * @define coll zipped
- * @define Coll Zipped
- * @define orderDependent
- * @define orderDependentFold
- * @define mayNotTerminateInf
- * @define willNotTerminateInf
- * @define collectExample
- * @define undefinedorder
- */
- class Zipped[+Repr1, +El1, +Repr2, +El2](coll1: TLike[El1, Repr1], coll2: ILike[El2, Repr2]) { // coll2: ILike for filter
- def map[B, To](f: (El1, El2) => B)(implicit cbf: CBF[Repr1, B, To]): To = {
- val b = cbf(coll1.repr)
- b.sizeHint(coll1)
- val elems2 = coll2.iterator
-
- for (el1 <- coll1) {
- if (elems2.hasNext)
- b += f(el1, elems2.next)
- else
- return b.result
- }
-
- b.result
- }
-
- def flatMap[B, To](f: (El1, El2) => TraversableOnce[B])(implicit cbf: CBF[Repr1, B, To]): To = {
- val b = cbf(coll1.repr)
- val elems2 = coll2.iterator
-
- for (el1 <- coll1) {
- if (elems2.hasNext)
- b ++= f(el1, elems2.next)
- else
- return b.result
- }
-
- b.result
- }
-
- def filter[To1, To2](f: (El1, El2) => Boolean)(implicit cbf1: CBF[Repr1, El1, To1], cbf2: CBF[Repr2, El2, To2]): (To1, To2) = {
- val b1 = cbf1(coll1.repr)
- val b2 = cbf2(coll2.repr)
- val elems2 = coll2.iterator
-
- for (el1 <- coll1) {
- if (elems2.hasNext) {
- val el2 = elems2.next
- if (f(el1, el2)) {
- b1 += el1
- b2 += el2
- }
- }
- else return (b1.result, b2.result)
- }
-
- (b1.result, b2.result)
- }
-
- def exists(f: (El1, El2) => Boolean): Boolean = {
- val elems2 = coll2.iterator
-
- for (el1 <- coll1) {
- if (elems2.hasNext) {
- if (f(el1, elems2.next))
- return true
- }
- else return false
- }
- false
- }
-
- def forall(f: (El1, El2) => Boolean): Boolean =
- !exists((x, y) => !f(x, y))
-
- def foreach[U](f: (El1, El2) => U): Unit = {
- val elems2 = coll2.iterator
-
- for (el1 <- coll1) {
- if (elems2.hasNext)
- f(el1, elems2.next)
- else
- return
- }
- }
- }
-
}