• Gary Willoughby (5/5) May 23 2013 I'm just looking at the signals example here:
• Juan Manuel Cabo (23/28) May 23 2013 class A {
• Gary Willoughby (1/1) May 23 2013 Thanks.

"Gary Willoughby" <dev kalekold.net> writes:

I'm just looking at the signals example here: 

"Different signals can be added to a class by naming the 
mixins.". Has anyone got an example of this please? I'd like to 
have a class raise different signals if possible.

"Juan Manuel Cabo" <juanmanuel.cabo gmail.com> writes:

On Thursday, 23 May 2013 at 15:22:06 UTC, Gary Willoughby wrote:
 I'm just looking at the signals example here: 

 "Different signals can be added to a class by naming the 
 mixins.". Has anyone got an example of this please? I'd like to 
 have a class raise different signals if possible.


class A {
     mixin Signal!() onChanged;
     mixin Signal!(int, string) onErrorMsg;

     ...
}

class B {
     private void a_ErrorMsg(int code, string msg) {
         writeln("Error code: ", code, ": ", msg);
     }

     void attachToA(A a) {
         a.onErrorMsg.connect(&a_ErrorMsg);
     }

     void detachFromA(A a) {
         a.onErrorMsg.disconnect(&a_ErrorMsg);
     }
}



It works perfectly. BUT, keep in mind that a signal connection 
doesn't keep your class alive if the GC wants to take it (if the 
GC collects your class, it is disconnected). This means that if 
you want to keep your listener classes around, they must be 
referenced somewhere.

--jm

"Gary Willoughby" <dev kalekold.net> writes:

Thanks.