On Thu, Aug 29, 2019 at 3:58 PM Steve Downey <sdowney@gmail.com> wrote:
It's not out of the question that span may acquire contiguous_range constructors for 20.

I don't understand this.  There is already a constructor that does this:

http://eel.is/c++draft/views.span#span.cons-itemdecl:5

The constraints are all met by a contiguous_range.

Zach