On Monday, 28 August 2017 at 12:19:26 UTC, Mike Parker wrote:
Jean-Louis Leroy posted about his open methods library here in
the forums some time ago. Now, he's written a blog post that
explains what open methods are, and describes the D
implementation and how it compares to his C++ library.
The blog:
https://dlang.org/blog/2017/08/28/open-methods-from-c-to-d/
Reddit:
https://www.reddit.com/r/programming/comments/6wj0ev/open_methods_from_c_to_d/
Nice. This does seem superior to the visitor pattern.