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Scala example source code file (TypeConstraint.scala)

This example Scala source code file (TypeConstraint.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Scala tags/keywords

annotation, annotation, typeconstraint, typeconstraint

The Scala TypeConstraint.scala source code

/*                     __                                               *\
**     ________ ___   / /  ___     Scala API                            **
**    / __/ __// _ | / /  / _ |    (c) 2006-2011, LAMP/EPFL             **
**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
** /____/\___/_/ |_/____/_/ | |                                         **
**                          |/                                          **
\*                                                                      */

package scala.annotation

/** <p>
 *    A marker for annotations that, when applied to a type,
 *    should be treated as a constraint on the annotated type.
 *    A proper constraint should restrict the type based only
 *    on information mentioned within the type.  A Scala compiler
 *    can use this assumption to rewrite the contents of the
 *    constraint as necessary.  To contrast, a type annotation
 *    whose meaning depends on the context where it is written
 *    down is not a proper constrained type, and this marker
 *    should not be applied.  A Scala compiler will drop such
 *    annotations in cases where it would rewrite a type constraint.
 *  </p>
 *
 *  @author  Lex Spoon
 *  @version 1.1, 2007-11-5
 *  @since   2.6
 */
trait TypeConstraint extends Annotation

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