Get unknown symbol (struct, method, class) tagged with User Defined Attributes

[Doug]

On Tuesday, 12 May 2020 at 04:02:18 UTC, Steven Schveighoffer 
wrote:

> In the case of serialization/deserialization, you give an 
> instance of a type to serialize or deserialize. Then the 
> library can search the symbols inside that type to see if any 
> has the UDA you are looking for.
>
> In the Rust example, there is a line of code:
>
> let p: Person = serde_json::from_str(data)?;
>
> I'm assuming that this conversion is detected and figured out 
> (i.e. this is how serde "finds" the type desired). For D, it 
> would look something like:
>
> auto p = serde_json.from_str!Person(data);
>
> If you want a list of ALL symbols that have the UDA in the 
> application, that would require some form of runtime reflection 
> (like Java). D has very limited support for runtime reflection. 
> In D, you would use some form of registration to tell the 
> system about your symbols.
>
> -Steve

Thanks for the feedback.
I've got a better idea of what is and isn't possible now.

I'll see about looking at one or two D JSON libraries to see how 
they approach things. It should help shed some more light on the 
subject.