Re: What does this mean ?

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] 
> <javascript:>> 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 !
>>
>> -- 
>> You received this message because you are subscribed to the Google Groups 
>> "scala-language" group.
>> To unsubscribe from this group and stop receiving emails from it, send an 
>> email to [email protected] <javascript:>.
>> For more options, visit https://groups.google.com/d/optout.
>>
>
>
>
> -- 
> Oliver Ruebenacker
> Senior Software Engineer, Diabetes Portal 
> <http://www.type2diabetesgenetics.org/>, Broad Institute 
> <http://www.broadinstitute.org/>
>
>

-- 
You received this message because you are subscribed to the Google Groups "scala-language" group.
To unsubscribe from this group and stop receiving emails from it, send an email to [email protected].
For more options, visit https://groups.google.com/d/optout.