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

[Walter Bright]

On 2/9/2018 6:01 AM, Atila Neves wrote:
> Unit tests are a great idea, right? Try convincing a group of 10 programmers who 
> have never written one and don't know anyone else who has. I have; I failed.

Unit tests are one of the great success stories of D. I believe it was a success 
because it was so simple to add unit tests to the code, and to run those tests.

D's unit testing system didn't even need to be very good. It just had to be 
*easy*. And that changed everything.