Andrey Semashev c63d36cf5b Added string_view::contains methods.
These methods were added in C++23.

Also updated string_view/ref tests:

- Added tests for string_view::contains.
- Added missing includes.
- Added missing std:: qualification.
- Removed tabs.
- Fixed misleading indentation (fixes gcc warnings).
- Fixed decrementing pointer before beginning of the string.

Closes https://github.com/boostorg/utility/issues/93.
2022-05-04 00:32:30 +03:00
..
2020-05-26 00:39:51 +03:00
2020-05-26 00:39:51 +03:00