String View Lite Versions Save

This release of string_view lite contains the following additions, fixes and changes.

Additions:

• Add prevention to construct, convert from nullptr, p2166 (#47, thanks @mbs-c).
• Add configuration option nssv_CONFIG_NO_STREAM_INSERTION to omit streams (#42, thanks @theShmoo).
• Add export() to CMakeLists.txt, enabling importing targets, nonstd-lite-project issues 50.
• Add script tc-cl.bat, nonstd-lite-project issues 54.
• Add GitHub Actions CI.

Fixes:

• Fix prevention to construct, convert from nullptr for presence of =delete, p2166 (#47).
• Fix check for stream to use sentry (#46, thanks mprather).
• Fix parameter type from char to CharT for older compilers (#45, thanks @Elite-stay).
• Fix link to LLVM libc++ implementation of string_view (thanks @striezel, #44).
• Fix typos in string_view.hpp (thanks @striezel, #43).
• Fix identical mangled names for clang on Windows (#40, thanks @nickhutchinson).

Changes:

• Make find() constexpr in C++11 (#48, #49, thanks @eyalroz).
• Get rid of non-constexpr std::swap() (#41, thanks @stdbug).
• Replace _CPPUNWIND with _HAS_EXCEPTIONS (thanks @DBJDBJ, nonstd-lite-project issue 49).
• Change value used with *_CPP20_OR_GREATER to 202002L (nonstd-lite-project issue 60).
• Update actions/checkout in GitHub Actions to v3 (#51, nonstd-lite-project issue 63).
• Add msvc (windows-2022) image to GitHub Actions, nonstd-lite-project issue 62.
• Remove msvc (windows-2016) image from GitHub Actions (thanks @xavier2k6, nonstd-lite-project issue 61).
• Handle lest test framework as system include to prevent warnings.

This release of string_view lite adds configuration via the Tweak header mechanism as proposed by Colby Pike (@vector-of-bool).

Additions:

• Add 'Tweak header' support via nonstd/string_view.tweak.hpp

Fixes:

• Fix usage of builtin for MSVC 1920/14.2 (VS2019) for pre-C++17
• Fix to use nssv prefix in configuration in t.bat, tc.bat, tg.bat batch files in test/

Changes:

• Add Visual Studio 2019 to the Appveyor build matrix (#39)

This release of string_view lite fixes the presence of char type specializations for compare() and length() that use builtin functions memcmp and strlen in relation to the availability of constexpr.

Fixes:

• Fix usage of char type builtins or mem-functions with respect to constexpr-ness (#34, thanks to @mcskatkat) (#38)

Changes:

• Add tag [.builtins] to inspect relevant macros.

This release of string_view lite provides constexpr comparison via compare() for C++14 (#34, thanks to @mcskatkat).

It contains the following fixes and changes:

Fixes:

• Fix detail::length() for non-optimized compilation (#33, thanks to @augustheart)
• Fix operator operator!=(basic_string_view, std::basic_string).

Changes:

• Provide constexpr comparison via compare() for C++14 (#34, thanks to @mcskatkat)
• For char type, use __builtin_memcmp(), __builtin_strlen(), memcmp() or strlen() (#34, thanks to @mcskatkat).
• Express operator!=() in operator==()
• Add IDE folders/files and build folder to .gitignore (.vs, .vscode, CodeBlocks, build)
• Add .editorconfig file

This release of string_view lite contains the following fixes and changes:

Fixes:

• Fix operator==() on wstring_view and wchar_t raw string (#30, thanks to @gongminmin).

Changes:

• Add option -Wshadow for gcc, clang.
• Avoid shadowing (#31, thanks @mattyclarkson).
• Add string_view comparison with std::string and const char * for older compilers.
• Non-recursive variant of detail::length() for compilers with maximum recursion depth in compile-time constexpr evaluation (#29, thanks @AdmiralCurtiss).
• Improve MSVC version table, nonstd-lite-project issue 38.
• Point conan badge to conan-center (thanks @flexferrum).
• Use #include in code on godbolt, nonstd-lite-project issue 36.

In this release of string_view lite, string_view.hpp is unchanged (apart from it's version number).

Changes:

• Change vcpkg install to use CMake
• Replace underscore with dash in unit name
• Add settings options to conanfile (thanks to @ngrodzitski)

[to be expanded]

This release of string_view lite improves support for CMake and Conan and contains numerous other changes and fixes.

See also nonstd lite project Improve coherence between lite projects.

To be written...

string-view lite has been re-licensed under the Boost Software License (BSL) (issue #6).

This is the first non-alpha release of string-view-lite.