New library: open multi-methods

[Jean-Louis Leroy via Digitalmars-d-announce]

Hello,

TL;DR: see here 
https://github.com/jll63/methods.d/blob/master/README.md for an 
explanation of what open multi-methods are, if you are not 
familiar with the idea.You may also want to read my article on 
Code Project 
https://www.codeproject.com/Articles/635264/Open-Multi-Methods-for-Cplusplus11-Part-1

Earlier this year I attended Ali Çehreli's talk at C++ Now. He 
did a good job: I walked out with the desire to learn about D and 
see how it measures up against C++, especially in terms of 
meta-programming and language extensibility. The first 
programming language I learned is Forth and I did some Lisp 
programming, so as you can imagine, my expectations are high.

As an experiment, I decided to try to port parts of my yomm11 
library to D. The experience turned out to be pleasant and I 
ended up writing a full implementation, with some friendly help 
from Ali and others in the Learn forum.

I think that what I have now is good enough to show. The git repo 
is here https://github.com/jll63/methods.d and I will post a 
package to the registry soon.

If you have the inclination, feel free to review and comment. 
This is my very first D project and I certainly have missed some 
idioms and been clumsy at times.

Jean-Louis Leroy