Re: Two functions with different args. Taking address of the one

[Виталий Фадеев via Digitalmars-d-learn]

On Thursday, 11 March 2021 at 12:48:13 UTC, Paul Backus wrote:
On Thursday, 11 March 2021 at 12:26:07 UTC, Виталий Фадеев 
wrote:
Have:
    void process( ref MouseKeyEvent event )
    {
       ...
    }
    void process( ref MouseMoveEvent event )
    {
       ...
    }

Want:
    _processMouseKey  = &process; // <-- not works
    _processMouseMove = &process; // <-- not works

What is correct way to get address of function with specific 
argument ?

You can use __traits(getOverloads, process) plus some 
metaprogramming to get the address of a specific overload. But 
IMO the easiest way is to use lambdas:

    __processMouseKey = (ref MouseKeyEvent event) { 
process(event); };
    __processMouseMove = (ref MouseMoveEvent event) { 
process(event); };

This will generate lambda:
  __processMouseKey = (ref MouseKeyEvent event) { process(event); 
};

two calls:
  call labnda;
    call process;

What right way to call function directly with selecting one of 
two ?