DIP in making: ProtoObject

[Jack Stouffer]

On Wednesday, 4 April 2018 at 14:47:03 UTC, Luís Marques wrote:
> Regarding the output range replacing toString. That's an 
> obvious improvement. Yet, before that is set in stone, give the 
> following at least some thought.

It's a bit late for that ;) 
https://github.com/dlang/phobos/pull/5991

> For instance, if you want to print an Object to the terminal 
> with some color, you can't use a chain of ranges like 
> `yourObject.toString.colorizer`, you have to output to some 
> intermediary buffer. Just by coincidence, yesterday I was once 
> again wondering about this and I decided to prototype an 
> input-range-based formatter.  By restricting the initial 
> version to a compile-time format string it actually made it 
> *very* easy to implement a MVP.

The counter to this is that output ranges are only for finalizing 
data that you want to buffered. In the example given, yourObject 
should instead have a range generating function which can be 
given to colorizer, which is then given to 
stdout.lockingTextWriter.