How to cast `shared` away reliably

[Nick Treleaven]

On Wednesday, 11 February 2026 at 21:34:14 UTC, Paul Backus wrote:
> On Wednesday, 11 February 2026 at 16:49:19 UTC, Arafel wrote:
>> I think it would still make sense to define what a "subtype" 
>> is.
>
> The usage of the word "subtype" here is incorrect; it should 
> probably say something like "component types" instead.
>
>> However, of the items listed there, pointers are indeed 
>> showing this behaviour, but functions and delegates aren't.
>
> What you are referring to as "function types" are probably 
> function _pointer_ types. Qualifiers work the same way for them 
> as they do for any other pointer types.
>
> Note that the _parameters_ of a function are not affected by 
> qualifiers on a function pointer, because the parameters of a 
> function are neither _contained in_ nor _pointed to_ by the 
> function pointer.

Thanks. This PR renames *subtype* to *component type* and lists 
them:
https://github.com/dlang/dlang.org/pull/4392