Writing pattern matching macros in D.

[sarn via Digitalmars-d-learn]

On Monday, 6 March 2017 at 02:20:02 UTC, Deech wrote:
> Hi all,
> I've been reading up on D's metaprogramming features and was 
> wondering if it was possible to use them to add pattern 
> matching to the language as a macro. The template mixin feature 
> seems to require putting the new syntax in strings. I was 
> hoping there's an alternative.
> Thanks!
> -deech

It isn't possible in the same way it is in, say, Rust.  This has 
come up before and Walter has strong opinions against that kind 
of rewriting macro.

This is what's currently implemented:
https://dlang.org/phobos/std_variant.html#visit