Re: Assign any event kind to a single templatized function ?

[ag0aep6g via Digitalmars-d-learn]

On 09/05/2016 03:44 PM, Basile B. wrote:
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module runnable;
import std.stdio;

struct Foo
{
    void delegate(int) event1;
    void delegate(int,int) event2;
    void delegate(int,ref int) event3;
}

struct Handler
{
    void handle(A...)(A a){writeln(a);}
    void handleref(A...)(/*auto ref*/ A a){writeln(a);}
}

void main(string[] args)
{
    import std.traits;
    Foo foo;
    Handler handler;
    foo.event1 = &handler.handle!(Parameters!(foo.event1));
    foo.event2 = &handler.handle!(Parameters!(foo.event2));
    foo.event3 = &handler.handleref!(Parameters!(foo.event2)); // ?
}
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You can pass the delegate type itself by alias. Then Parameters carries 
over the ref. Not sure if that's well-defined or if it just happens to work.


    void handlef(F)(Parameters!F a){writeln(a);}
...
    foo.event3 = &handler.handlef!(typeof(foo.event3));