Adding the ?. operator to D

[Per Nordlöw]

On Thursday, 17 September 2020 at 19:38:01 UTC, Andrei 
Alexandrescu wrote:
> I recall Perl does something similar with its "or" operator. 
> Changing || that way now would be too much breakage.

Python's `or` behaves the same which is mimicked by

https://dlang.org/phobos/std_algorithm_comparison.html#either

Note that I explicitly asked for statically typed languages. I 
wonder what the behavior is for functional languages.