dmd 2.029 release

[Andrei Alexandrescu]

grauzone wrote:
> Simen Kjaeraas wrote:
>> Do note that I might have misinterpreted it all, as Andrei's code 
>> would not do what I have outlined above, I only feel it makes the most 
>> sense.
> 
> Yeah OK, but what about virtual functions? Not having it virtual is a 
> real disadvantage, because subclass-parts aren't automatically dumped.

Streaming out is a virtual function that takes a classic interface 
object. (I explained that in two posts.)

> What exactly is R, and why is it simpler than a Sink delegate? A Sink 
> delegate is as simple as it gets, and what else than a string do you 
> want to output? (Hint: this is probably not supposed to be a 
> serialization framework.)

It is simpler than a Sink delegate because the delegate is not simple; 
it's simplistic. You can't use std.algorithm with a delegate, it only 
accepts one type (meaning it is very inefficient if you have multiple 
types to output) - it's essentially a non-design.

> One thing that I could imagine that put() automatically takes care of 
> formatting various data types into a string. Okay, where can I pass 
> format specifiers? What if put() can't deal with the type? Or does it 
> call std.string.format() anyway? Then why the indirection through the 
> string? Why not call format() directly? (Yes, format() needs to be able 
> to output using a sink instead of returning a string.)

I'd spend more time on explaining that but I fear you want more to 
convince yourself and others that output streams are no good and that 
your non-design is simpler, than actually getting answers to your questions.

> Oh by the way, unlike a weird template, sink works with virtual methods, 
> too.
> 
> I have the impression Andrei wants to cast everything into ranges 
> instead of adhering to KISS.

I want to adhere to KISS, and therefore I want to support output ranges 
with e.g. strings and files. If you don't take the time to look at 
ranges as you yourself said, then why do you spend time commenting on 
them? Shouldn't things go the other way?


Andrei