Explicit cast to @system?

[user1234]

On Saturday, 8 October 2022 at 23:06:13 UTC, Anonymouse wrote:
> I have some nested templated code that takes function pointers. 
> In many cases I pass it functions of identical signatures, 
> except some are `@safe` and others are `@system`. In those 
> cases the templates end up getting instantiated twice. I don't 
> care about the `@safe`-ness and I'd really like to just have 
> them all treated as `@system`, with one instantiation per 
> unique signature.
>
> To illustrate:
>
> [...]
>
> ...but there are a lot of different signatures and I need a 
> general approach. There doesn't seem to be such a thing as 
> `cast(@system)fp`.
>
> My current solution involves some very gnarly string mixins.

I see what you mean, in the past I wanted `cast(pure)`, 
`cast(nothrow)`, similarly to avoid using metaprog (or maybe was 
that delegates) in certain case.

> [...]
> But surely there has to be a better way?

No.