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

9.1 KiB

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