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/*
 * Scala (https://www.scala-lang.org)
 *
 * Copyright EPFL and Lightbend, Inc.
 *
 * Licensed under Apache License 2.0
 * (http://www.apache.org/licenses/LICENSE-2.0).
 *
 * See the NOTICE file distributed with this work for
 * additional information regarding copyright ownership.
 */

package scala
package collection
package mutable

/** `Subscriber[A, B]` objects may subscribe to events of type `A`
 *  published by an object of type `B`. `B` is typically a subtype of
 *  [[scala.collection.mutable.Publisher]].
 *
 *  @author  Matthias Zenger
 *  @author  Martin Odersky
 *  @since   1
 */
trait Subscriber[-Evt, -Pub] {
  def notify(pub: Pub, event: Evt): Unit
}