ContainsKey - laforge49/Asynchronous-Functional-Programming GitHub Wiki
Send a ContainsKey message to a sequence actor to see if the sequence contains a given key.
case class ContainsKey[K](key: K)
Test.
println(Future(new Range(1,4), ContainsKey(2)))
println(Future(new Range(1,4), ContainsKey(4)))
Output.
true
false