tree 53c92421797f35c2e0924a009b9d94d5638aaa44
parent a587ed83da233538f32740280070fdaeee6c852c
author Joe Loser <joeloser93@gmail.com> 1633544222 -0400
committer Copybara-Service <copybara-worker@google.com> 1633544423 -0700

[libc++] Implement P1391 for string_view

Implement P1391 (https://wg21.link/p1391) which allows
`std::string_view` to be constructible from any contiguous range of
characters.

Note that a different paper (http://wg21.link/P1989) handles the generic
range constructor for `std::string_view`.

Reviewed By: ldionne, Quuxplusone, Mordante, #libc

Differential Revision: https://reviews.llvm.org/D110718

GitOrigin-RevId: 4be7f48960980831a9b744c96f38ddb7dc7848ce