On Wed, Jan 31, 2018 at 1:53 AM, Paul A. Bristow via Boost < boost@lists.boost.org> wrote:
-----Original Message----- From: Boost [mailto:boost-bounces@lists.boost.org] On Behalf Of Andrzej Krzemienski via Boost Sent: 30 January 2018 19:34 To: boost@lists.boost.org Cc: Andrzej Krzemienski Subject: Re: [boost] [review] Review of Outcome v2 (Fri-19-Jan to Sun-28-Jan, 2018)
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What is the reason for Boost.Outcome requiring C++14? If it is the `constexpr` guarantees, could the `constexpr` be just dropped for non-C++14 compilers?
Of course, Boost has some macros that might help with this
BOOST_CONSTEXPR_OR_CONST ...
constexpr is C++11.
But I can't see any objection to requiring a C++14 compiler. I suspect Outcome will mainly or only be used for new projects, a good time to start using the most recent (and fewer bugged) compiler.
You'd be surprised how difficult it is for a large corporation to switch compiler versions. I am not sure what's the right compiler for Outcome to require, but certainly requiring C++11 is better than C++14. Emil