+1 On Mon, May 19, 2025 at 4:03 PM Sutou Kouhei <k...@clear-code.com> wrote:
> +1 > > In <fe48c3f7-a2ee-420f-96b0-6ddf98a8e...@python.org> > "[DISCUSS][C++] Switch to C++20" on Mon, 19 May 2025 18:14:27 +0200, > Antoine Pitrou <anto...@python.org> wrote: > > > > > Hello, > > > > I am proposing that we switch Arrow C++ to require C++20. > > > > C++20 will offer support for more C++ language and standard library > > features, such as: > > > > - concepts > > - generic lambdas with explicit type parameters > > - designated initializers > > - calendar and timezone functions (currently, our Windows users need to > > - download the timezone database separately; this would not be required > > - anymore with C++20, IIUC) > > - std::span (we currently use a backport) > > - coroutines (not sure they are usable enough, though) > > - various smaller improvements and additions > > > > A decent level of C++20 support is available with these compiler > > versions (see https://en.cppreference.com/w/cpp/compiler_support#cpp20 > > for details): > > > > - gcc 10 > > - clang 10 to 19 > > - MSVC 19.28 (Visual Studio 2019) or 19.30 (Visual Studio 2022) > > > > Switching to C++20 will happen in any case, the question is whether we > > can do it now or we need to wait for a year or two. > > > > There is an experimental PR to switch to C++20 and it shows that there > > is no blocker for switching (a couple odd issues will have to be > > fixed: > > https://github.com/apache/arrow/pull/45445 > > > > A more general issue has been opened separately: > > https://github.com/apache/arrow/issues/45885 > > > > Are there any opinions on this? > > > > Regards > > > > Antoine. > > >
