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Standard library for the Scala Programming Language

There is a newer version: 2.11.2

/*                     __                                               *\
**     ________ ___   / /  ___     Scala API                            **
**    / __/ __// _ | / /  / _ |    (c) 2002-2011, LAMP/EPFL             **
**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
** /____/\___/_/ |_/____/_/ | |                                         **
**                          |/                                          **
\*                                                                      */
// GENERATED CODE: DO NOT EDIT. See scala.Function0 for timestamp.

package scala

object Product4 {
  def unapply[T1, T2, T3, T4](x: Product4[T1, T2, T3, T4]): Option[Product4[T1, T2, T3, T4]] =
    Some(x)
}

/** Product4 is a cartesian product of 4 components.
 *  @since 2.3
 */
trait Product4[+T1, +T2, +T3, +T4] extends Any with Product {
  /** The arity of this product.
   *  @return 4
   */
  override def productArity = 4

  
  /** Returns the n-th projection of this product if 0 < n <= productArity,
   *  otherwise throws an `IndexOutOfBoundsException`.
   *
   *  @param n number of the projection to be returned
   *  @return  same as `._(n+1)`, for example `productElement(0)` is the same as `._1`.
   *  @throws  IndexOutOfBoundsException
   */

  @throws(classOf[IndexOutOfBoundsException])
  override def productElement(n: Int) = n match { 
    case 0 => _1
    case 1 => _2
    case 2 => _3
    case 3 => _4
    case _ => throw new IndexOutOfBoundsException(n.toString())
 }

  /** A projection of element 1 of this Product.
   *  @return   A projection of element 1.
   */
  def _1: T1
  /** A projection of element 2 of this Product.
   *  @return   A projection of element 2.
   */
  def _2: T2
  /** A projection of element 3 of this Product.
   *  @return   A projection of element 3.
   */
  def _3: T3
  /** A projection of element 4 of this Product.
   *  @return   A projection of element 4.
   */
  def _4: T4


}