On Monday, 22 August 2022 at 12:04:09 UTC, Paul Backus wrote:
On Monday, 22 August 2022 at 11:24:59 UTC, Andrey Zherikov
wrote:
On Monday, 22 August 2022 at 06:01:11 UTC, JG wrote:
Why not just change to:
alias type = typeof(U().func!0());
This is user's code and `U().func!0` is legit syntax.
Workaround: wrap it in a lambda.
```d
import std.traits;
alias type = ReturnType!(() => U().func!0);
```
My situation is that user can write some UDA expression and I'm
checking whether it's of a type `U` using `hasUDA!(sym, U)` and
`getUDAs!(sym, U)`. Is the users uses `U()` or `U().func!0()`,
everything works. But `U().func!0` does not because its type is
not `U`. So to handle this use case it seems I need to implement
my own `hasUDA` and `getUDAs` based on
`ReturnType`.
