Signals and Slots in D

[Fredrik Olsson]

Walter Bright skrev:
<snip>
>> For the signal targets it will be impossible to tell a click from a 
>> double click. Unless you pass a more arguments, but then you kind of 
>> loose the simple idea of connecting to listen to a single event signal.
> 
> Ok, I see. The solution is straightforward:
> 
> class MyControl {
>    mixin Signal!(MouseButton) Click;
>    mixin Signal!(MouseButton) DoubleClick;
> 
>    void myActualClick(MouseButton mb) {
>      ...
>      Click.emit(mb);
>    }
> 
>    void myActualDoubleClick(MouseButton mb) {
>      ...
>      DoubleClick.emit(mb);
>    }
>  }
> 
> You can have any number of signals in a class.

I just must say I love the beauty of this. Simple, no magic added, and 
high readability. What more can anyone ask for?


// Fredrik Olsson