Switch from C++14 to C++17?

[mloskot]

Now: C++14

Since release v2.12 (in ) nanodbc requires C++14.

The CMake configuration exposes cache variable CMAKE_CXX_STANDARD variable with default value 14 (see #303).

Recently, nanodbc received (optional) enhancements that require C++17 and more such may arrive soonish (e.g. support for std::variant or std::any). There is already an amount of conditionally-compiled code that we maintain (e.g. #148, #283).

The library also uses some C++ features that have been deprecated in C++17, especially the <codecvt> (see #74), so those may need to be taken care of soonish too.

Next: C++17

If you use or if you plan to use nanodbc, please help us to find out which version of the C++ standard the nanodbc library should support. Please, participate in this poll and discussion thread. Thanks!

/cc @lexicalunit

[mloskot]

C++17 switch rationale

List of reasons why we may want to switch to C++17:

• C++17 deprecated <codecvt> #74
• Replace arrlen/strarrlen functions with C++17 std::size() #148
• Add support for C++17 type std::variant #324
• Add support for C++17 type std::any #325
• Add support for C++17 type std::optional #326
• Added support for binding std::string_view in statement.bind_strings() #283
• Added support for binding std::string_view in table_valued_parameter.bind_strings() #299
• C++17 type std::optional support #345
• Allow callers to pass pre-connection attributes. #353 (comment)