DIP 45 - approval discussion

[Dicebot]

On Wednesday, 13 November 2013 at 00:25:36 UTC, Andrei 
Alexandrescu wrote:
> I don't think all classes in a system are discoverable during 
> compilation. This is the part of Object.factory that is not 
> easy to replace. There must be a global map somewhere and a 
> per-module registration during initialization.
>
> Andrei

Sure, this topic was already discussed in __traits(getUnittest) 
context recently, similar problem. You can find all classes that 
transitively accessible from context via imports - this is a 
natural limitation of compile-time reflection. Sometimes it is 
enough, sometimes registration is necessary. But it is a nice 
tool to have.