What's the idiomatic equivalent in Scala for C#'s event
c#, scala
Solution
Idiomatic way for scala is not to use observer pattern. See Deprecating the Observer Pattern.
Take a look at this answer for implementation.
Problem
In C#, classes and interfaces can have `event`s: ``` public class Foo { public event Action SomethingHappened; public void DoSomething() { // yes, i'm aware of the potential NRE this.SomethingHappened(); } } ``` This facilitates a push-based notification with minimal boilerplate code, and enables a multiple-subscriber model so that many observers can listen to the event: ``` var foo = new Foo(); foo.SomethingHappened += () => Console.WriteLine("Yay!"); foo.DoSomething(); // "Yay!" appears on console. ``` Is there an equivalent idiom in Scala? What I'm looking for is: - Minimal boilerplate code - Single publisher, multiple subscribers - Attach/detach subscribers Examples of its use in Scala documentation would be wonderful. I'm not looking for an implementation of C# events in Scala. Rather, I'm looking for the equivalent idiom in Scala.