Scala remote method injection - scala

Question

I have a requirement, I have a method, which takes another function. I want to get the result of this parameter function in my caller.
I have created a code snippet for this scenario:
class ProcessHandler {
def executeInstructions(x:String=>Array[String])
{
//print the resultant list here
}
}
object ProcessHandlerMain {
def main(args: Array[String]) {
val handler = new ProcessHandler
handler.executeInstructions( instruction)
}
def instruction(x:String):Array[String] =
{
List("words", "from", "book").toArray
}
}
This call handler.executeInstructions( instruction) will be made by another process. Here I am using main method to test it out.
Here is what I do not know:
How can I print the result of parameter function
If I have to expose this method executeInstructions() to client side, what is the best approach? Here we will not be passing text instructions, rather a function similar to instruction().
Thanks
Updated: From the response received, my code is updated to
class ProcessHandler {
def executeInstructions(x:String=>Array[String])
{
//print the resultant list here
val result = x("some string here")
//this array will be sent to another service
// dispatcher.dispatch(result)
}
}
My requirements are updated:
How can I print the result of parameter function : Done
If I have to expose this method executeInstructions() to client side, what is the best approach? Here we will not be passing text instructions, rather a function similar to instruction(). Pending
The client interface has will work as below:
1. client will be calling executeInstructions() remotely and pass function as parameter.
2. InstructionId will be passed to the injected function, the resultant array will be dispatched to another service.