Delegate / Error: cannot implicitly convert expression...

[ag0aep6g]

On Saturday, 15 June 2019 at 17:24:45 UTC, user1234 wrote:
> ---
> void foo(){writeln(__PRETTY_FUNCTION__);}
>
> void main(string[] args)
> {
>     void delegate() dg;
>     dg.funcptr = &foo;
>     dg.ptr = null; // usually a "this" or a frame address
>     dg();
> }
> ---
>
> because dg.ptr would be used to retrieve the offset of the 
> locals variable used in the parent stack or the address of a 
> class instance (the this). But this is not required at all 
> here. The opposite way would lead to various access violation.

That only works because foo doesn't have any parameters. When you 
add even just one, things will go wrong.