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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2002-2008, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
// $Id: Tuple2.scala 14794 2008-04-23 08:15:17Z washburn $
// generated by genprod on Wed Apr 23 10:06:16 CEST 2008 (with extra methods)
package scalax
import annotation.unchecked.uncheckedVariance
object Tuple2 {
import collection._
import collection.generic._
class IterableOps[CC[+B] <: Iterable[B] with IterableTemplate[CC, B @uncheckedVariance], A1, A2](tuple: (CC[A1], Iterable[A2])) {
def zip: CC[(A1, A2)] = {
val elems1 = tuple._1.elements
val elems2 = tuple._2.elements
val b = tuple._1.newBuilder[(A1, A2)]
while (elems1.hasNext && elems2.hasNext)
b += ((elems1.next, elems2.next))
b.result
}
def map[B](f: (A1, A2) => B): CC[B] = {
val elems1 = tuple._1.elements
val elems2 = tuple._2.elements
val b = tuple._1.newBuilder[B]
while (elems1.hasNext && elems2.hasNext)
b += f(elems1.next, elems2.next)
b.result
}
def flatMap[B](f: (A1, A2) => CC[B]): CC[B] = {
val elems1 = tuple._1.elements
val elems2 = tuple._2.elements
val b = tuple._1.newBuilder[B]
while (elems1.hasNext && elems2.hasNext)
b ++= f(elems1.next, elems2.next)
b.result
}
def foreach(f: (A1, A2) => Unit) {
val elems1 = tuple._1.elements
val elems2 = tuple._2.elements
while (elems1.hasNext && elems2.hasNext)
f(elems1.next, elems2.next)
}
def forall(p: (A1, A2) => Boolean): Boolean = {
val elems1 = tuple._1.elements
val elems2 = tuple._2.elements
while (elems1.hasNext && elems2.hasNext)
if (!p(elems1.next, elems2.next)) return false
true
}
def exists(p: (A1, A2) => Boolean): Boolean = {
val elems1 = tuple._1.elements
val elems2 = tuple._2.elements
while (elems1.hasNext && elems2.hasNext)
if (p(elems1.next, elems2.next)) return true
false
}
}
implicit def tupleOfIterableWrapper[CC[+B] <: Iterable[B] with IterableTemplate[CC, B], A1, A2](tuple: (CC[A1], Iterable[A2])) =
new IterableOps[CC, A1, A2](tuple)
/* A more general version which will probably not work.
implicit def tupleOfIterableWrapper[CC[+B] <: Iterable[B] with IterableTemplate[CC, B], A1, A2, B1 <: CC[A1]](tuple: B1, Iterable[A2]) =
new IterableOps[CC, A1, A2](tuple)
*/
// Adriaan: If you drop the type parameters it will infer the wrong types.
tupleOfIterableWrapper[collection.immutable.List, Int, Int]((collection.immutable.Nil, collection.immutable.Nil)) forall (_ + _ < 10)
}
/** Tuple2 is the canonical representation of a @see Product2
*
*/
case class Tuple2[+T1, +T2](_1:T1, _2:T2)
extends Product2[T1, T2] {
override def toString() = {
val sb = new StringBuilder
sb.append('(').append(_1).append(',').append(_2).append(')')
sb.toString
}
/** Swap the elements of the tuple */
def swap: Tuple2[T2,T1] = Tuple2(_2, _1)
}
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