On Wednesday, 14 November 2018 at 16:28:19 UTC, Radu wrote:
Looks like that there is no easy way to extract a function
parameters UDA list.
The following:
```
import std.traits;
struct s { string foo; }
void foo(@s("aaa") int a, bool x);
void main()
{
alias P = Parameters!foo;
enum udas = __traits(getAttributes, P);
pragma(msg, udas);
}
```
will print `tuple(s("aaa"))`
but if you change `foo` to `void foo(int a, @s("aaa") bool x);`
you get `Error: first argument is not a symbol`
Is this a current limitation or I'm using the wrong approach?
I also, quite disappointed how UDAs doesn't work with enums. I
end up using struct + enum to simulate that, sometimes it's quite
a work.
