alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Scala example source code file (Specializable.scala)

This example Scala source code file (Specializable.scala) is included in my "Source Code Warehouse" project. The intent of this project is to help you more easily find Scala source code examples by using tags.

All credit for the original source code belongs to scala-lang.org; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Scala tags/keywords

boolean, char, double, float, group, int, long, short, specializedgroup, unit

The Specializable.scala Scala example source code

/*                     __                                               *\
**     ________ ___   / /  ___     Scala API                            **
**    / __/ __// _ | / /  / _ |    (c) 2002-2013, LAMP/EPFL             **
**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
** /____/\___/_/ |_/____/_/ | |                                         **
**                          |/                                          **
\*                                                                      */

package scala

/** A common supertype for companions of specializable types.
 *  Should not be extended in user code.
 */
trait Specializable

object Specializable {
  // No type parameter in @specialized annotation.
  trait SpecializedGroup { }

  // Smuggle a list of types by way of a tuple upon which Group is parameterized.
  class Group[T >: Null](value: T) extends SpecializedGroup { }

  final val Primitives  = new Group((Byte, Short, Int, Long, Char, Float, Double, Boolean, Unit))
  final val Everything  = new Group((Byte, Short, Int, Long, Char, Float, Double, Boolean, Unit, AnyRef))
  final val Bits32AndUp = new Group((Int, Long, Float, Double))
  final val Integral    = new Group((Byte, Short, Int, Long, Char))
  final val AllNumeric  = new Group((Byte, Short, Int, Long, Char, Float, Double))
  final val BestOfBreed = new Group((Int, Double, Boolean, Unit, AnyRef))
}

Other Scala source code examples

Here is a short list of links related to this Scala Specializable.scala source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2024 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.