On Friday, April 14th, 2023 at 6:18 AM, Frederick Virchanza Gotham via Std-Proposals <std-proposals_at_[hidden]> wrote:
>

> void Some_Library_Func(void (*const pf)(void))
> {
> pf();
> }
>

> [...]
> We will define a simple POD struct to hold these two pieces of data:
>

> struct LambdaInfo {
> void *data, code;
> };
>


I see C callback APIs that split a context pointer
to an extra parameter very often:

    void some_api(void cb(int), void *user_data);

And there is a paper trying to simplify that:

    void some_api(void cb(int) _Wide);

https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2862.pdf

I'm not sure whether it is worth the effort to
please the old APIs that don't support context by
pushing the solution to the next level.

--
Zhihao Yuan, ID lichray
The best way to predict the future is to invent it.
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