Re: What does this mean ?

Ok I'm begining to understand :
the "ping ! Pong" is calling the '!' method and putting a Pong in a mailbox.
And the fact that the other side is continuesly calling the receive method 
is kind of forcing the scan of the mailbox as much as possible.
Then when the mailbox has a message in it, it feeds the message as argument 
for the partial method 
am i right ?

Le mercredi 17 février 2016 16:22:41 UTC+1, Oliver Ruebenacker a écrit :

>
>      Hello,
>
>   receive {...} is a call of the "receive" method and short for 
> receive({...}) 
>
>      Best, Oliver
>
> On Wed, Feb 17, 2016 at 10:11 AM, Clement Dourval <[email protected] 
> <javascript:>> wrote:
>
>> But what does the fact that the "receive" word is not followed by the '=' 
>> sign is meaning ?
>> receive is suposed to be a function here right ?
>> is that a kind of averride without having to write the whole signature.
>>
>> From where i'm standing, it seems to me that receive is a function with 
>> partial cases depending on the main argument to be Ping typed or other.
>>
>> But there is no = sign so what does this mean ?
>>
>> Le mercredi 17 février 2016 15:57:49 UTC+1, Oliver Ruebenacker a écrit :
>>
>>>
>>>      Hello,
>>>
>>>   The case keyword creates a partial function, e.g.:
>>>
>>> scala> val pf: Int => String = { case 42 => "Hello!" }
>>> pf: Int => String = <function1>
>>>
>>> scala> pf(42)
>>> res1: String = Hello!
>>>
>>>      Best, Oliver
>>>
>>> On Wed, Feb 17, 2016 at 9:40 AM, Clement Dourval <[email protected]> 
>>> wrote:
>>>
>>>> Hi, I'm currently Learning Scala and more precisely, concurrent 
>>>> programming with scala.
>>>>
>>>> I found this code :
>>>>
>>>> class Pong extends Actor {
>>>>   def act() {
>>>>     var pongCount = 0
>>>>     while (true) {
>>>>       receive {
>>>>         case Ping =>
>>>>           if (pongCount % 1000 == 0)
>>>>             Console.println("Pong: ping "+pongCount)
>>>>           sender ! Pong
>>>>           pongCount = pongCount + 1
>>>>         case Stop =>
>>>>           Console.println("Pong: stop")
>>>>           exit()
>>>>       }
>>>>     }
>>>>   }
>>>> }
>>>>
>>>> This is from a tutorial, so i'm expecting it to work, the only problem 
>>>> is I do not understand how.
>>>>
>>>> The main problem is, how does this code use the case keyword since 
>>>> there is no match !
>>>> (adress of the tutorial : http://www.scala-lang.org/old/node/242)
>>>>
>>>> Anyway, i understood what was the tutorial was supposed to do (with 
>>>> ping pong), I just don't understand what is written, I'd like to be able to 
>>>> write it myself.
>>>> But it seems i'm missing some syntax subtleties 
>>>> And even if these are deprecated, i found the same synthax with the 
>>>> akka Library ! So I'm asking myself how to read this.
>>>>
>>>> Anyone can help ? Thanks in advance !
>>>>
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>>>
>>>
>>>
>>> -- 
>>> Oliver Ruebenacker
>>> Senior Software Engineer, Diabetes Portal 
>>> <http://www.type2diabetesgenetics.org/>, Broad Institute 
>>> <http://www.broadinstitute.org/>
>>>
>>> -- 
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>
>
>
> -- 
> Oliver Ruebenacker
> Senior Software Engineer, Diabetes Portal 
> <http://www.type2diabetesgenetics.org/>, Broad Institute 
> <http://www.broadinstitute.org/>
>
>

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