> It almost sounds they were stuck writing C++98 code and instead of moving their coding standard to C++17, they chose to rewrite in D. I think they started th

> It almost sounds they were stuck writing C++98 code and instead of moving their coding standard to C++17, they chose to rewrite in D. I think they started their port before C++17 was standardized: > Also in 2010, a couple of us (PAJ and RJG) living in different parts of the world (Queensland, Australia and Virginia, USA) came across the D programming language .... > In 2014 we got serious about using D for the next iteration of Eilmer and started porting the core gas dynamics code from C++ to D. Over the next four years, .... The grid solver, they note, was ported in 2015.