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我不知道調用val delegate = RemoteActor.select()時是否有確定性。 我在問這個問題,因爲我注意到當我通過網絡發送代表時,程序沒有終止。RemoteActor.select - 結果確定?
是否有其他副作用,取決於委託?
是否有任何規則,當RemoteActor.select將相同的參數返回相同的委託?
下面是一些例子代碼演示了RemoteActor.select問題:
package test
import scala.actors.Actor, Actor._
import scala.actors.remote._, RemoteActor._
object DelegateTest {
def main(args :Array[String]) {
val actor = new Actorlein("localhost", 63000, 'first)
actor ! 'eval
}
}
class Actorlein(val host: String, val port: Int, val symbol: Symbol) extends Actor {
val preProxy1 = select(node, symbol)
val preProxy2 = select(node, symbol)
val node = Node(host,port)
this.start
alive(port)
register(symbol, this)
val initProxy1 = select(node, symbol)
val initProxy2 = select(node, symbol)
override def act = {
val actProxy1 = select(node, symbol)
val actProxy2 = select(node, symbol)
react {
case 'eval => {
val reactProxy1 = select(node, symbol)
val reactProxy2 = select(node, symbol)
//all true
println("pProxy equal? "+(preProxy1 == preProxy2))
println("iProxy equal? "+(initProxy1 == initProxy2))
println("aProxy equal? "+(actProxy1 == actProxy2))
println("rProxy equal? "+(reactProxy1 == reactProxy2))
//all true()
println("i equal p? "+(initProxy1 == preProxy1)) //false
println("r equal p? "+(reactProxy1 == preProxy1))//false
println("a equal p? "+(actProxy1 == preProxy1)) //false
println("i equal a? "+(initProxy1 == actProxy1)) //false
println("r equal a? "+(reactProxy1 == actProxy1))//true
}
case any => println("Unkown Msg: "+any)
}
}
}