DIP 45 - approval discussion

[deadalnix]

On Tuesday, 12 November 2013 at 22:45:15 UTC, Andrei Alexandrescu 
wrote:
> What are the better ways? Note that most of the time you don't 
> "know" the name of a class - you get it down the wire during 
> some deserialization. So there must be some way to build an 
> object from a token representation of the object.
>

The serialization is a good example. You'll have to note that if 
the code has been able to serialize the data, it can generate at 
compile time the necessary scafolding to deserialize it.

>> - The functionality provided by Object.factory is trivially 
>> replaced by
>> a solution more specifically tailored to the problem at hand 
>> using
>> compile-time reflection.
>
> It's not quite trivial - somewhere there has to be a map and 
> registration and lookup and whatnot. I don't see it why it's 
> unbecoming for such functionality to be part of the standard 
> library. I would agree, however, that it's a judgment call 
> whether it should be wired in or provided on demand.
>

That s why this is a problem to add all that is the core of the 
language when it isn't used often.