Generate a pointer to a method of a struct

[Iain Buclaw]

On Friday, 14 October 2022 at 18:34:58 UTC, kdevel wrote:
> dmd and gdc optimize the lambda invocations away. Nonetheless 
> the expression looks somewhat too big. To overcome this I tried 
> to generate the function pointer outside of the struct:
>
> ```
> auto funcptr (alias method) ()
> {
>    return &method;
> }
>       :
>       fun = funcptr!bar;
>       :
> ```
>
> Which works but neither dmd nor gdc were able to optimize the 
> additional function call away.

pragma(inline, true)
auto funcptr (alias method) ()