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Here is a trait that implements the logic of the Observer Pattern:

Sumit Rawal answered on September 1, 2023 Popularity 1/10 Helpfulness 1/10

answer Here is a trait that implements the logic of the Observer Pattern:

Here is a trait that implements the logic of the Observer Pattern:

Comment

// code-examples/Traits/observer/observer.scala

package observer

trait Subject {
  type Observer = { def receiveUpdate(subject: Any) }

  private var observers = List[Observer]()
  def addObserver(observer:Observer) = observers ::= observer
  def notifyObservers = observers foreach (_.receiveUpdate(this))
}

Popularity 1/10 Helpfulness 1/10 Language scala

Source: learning.oreilly.com

Tags: implements logic scala

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