On Thursday, 14 April 2022 at 08:55:25 UTC, Chris Katko wrote:
[...]
It appears the nested function's variable capture depends on
forward declaration (the right term?). Whereas, I was under the
impression most/all of D worked on a multiple pass compilation
so the order of declarations shouldn't matter.
Is this a D spec, or a compiler parsing error/oversight?
[...]
This is cross-module what you're talking about, eg outside of
main(). Something with most programming languages, it's not about
nested function. Do it with lambda if you want, and you'll get
the same result:
```d
/* auto is_Key = (ALLEGRO_KEY key) =>
(event.keyboard.keycode == key); // Not
compiling! */
ALLEGRO_EVENT event;
```
You have one more option, and that is to use OOP. You can even
briefly encapsulate it into a struct.
SDB@79
