Quora: Why hasn't D started to replace C++?

[Adam D. Ruppe]

On Wednesday, 31 January 2018 at 19:00:57 UTC, Jack Stouffer 
wrote:
>> For some reason this ranks below colourful error-messages.
>
> That's just something that Walter was able to bang out in an 
> hour

Yet he recently, months after starting, complained that 
"technical debt", specifically citing coloring error messages, 
was eating enough of his time to cause a forum lamentation.