Ordering comparisons

[deadalnix via Digitalmars-d]

On Tuesday, 7 March 2017 at 01:27:56 UTC, Andrei Alexandrescu 
wrote:
> The question is what to do to minimize breakage yet "break the 
> bad code". The most backward-compatible solution is to define 
> opCmp automatically to do a field-by-field lexicographical 
> comparison. The most radical solution is disable ordering 
> comparisons unless explicitly implemented by the user.
>

There should be no assumption that structs are comparable, so the 
later.