How to write a class proxy ?

[Alex]

On Wednesday, 20 March 2019 at 08:16:22 UTC, boolangery wrote:
> Hi,
>
> What is the best way to write a class proxy ?
> I need to intercept attribute access.
>
> Example:
>
> The user write a PODO:
>
> class User
> {
>     string name;
> }
>
>
> Then he use my library:
>
> auto user = mylib.get!User(); // return a proxy here
>
> writeln(user.name); // intercept user.name access (how to do 
> this ?)

This is by far not unique and depends on features of the proxy, 
even if you restrict the user to PODOs... Besides this, for 
example:

´´´
module mylib;

auto get(T)()
{
     return new Proxy!T();
}

private class Proxy(T)
{
     T podo;
     alias podo this;

     this()
     {
         podo = new T();
     }
}
´´´