importing a symbol without specifying a subpackage name

[60rntogo]

On Wednesday, 16 September 2020 at 13:33:34 UTC, Adam D. Ruppe 
wrote:
> They define an additional file
>
> std/package.d

Thanks for a quick answer. I suspected it must have been 
something like that, except that I tried doing this in foo.d and 
then the compiler yelled at me.