tree e027446c06329683b55db751434ccb2bc13d8e28
parent 69a5190a7ebca47cda35a6106aaa4dd0bfb5534f
author Wyatt Hepler <hepler@google.com> 1592865645 -0700
committer CQ Bot Account <commit-bot@chromium.org> 1592945128 +0000

pw_span: Move pw_string, pw_unit_test to std::span

- Update pw_string and the test framework to std::span.
- Have pw_string pass std::span by value, for consistency with other
  uses in Pigweed.
- Recommend using template specializations instead of overloads for
  custom ToString implementations. Template specializations are
  preferred because the main ToString definition is a template.

Change-Id: Ib67c6bce1752c4a90e2138bdb1f20c6671f55d50
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/12841
Reviewed-by: Keir Mierle <keir@google.com>
Commit-Queue: Wyatt Hepler <hepler@google.com>