Re: macro BOOST_HAS_CONCEPTS not work + namespace for concepts

From: John Maddock (jz.maddock_at_[hidden])
Date: 2023-02-19 12:58:29

On 19/02/2023 12:24, Gero Peterhoff via Boost wrote:
> Hi,
> 1) the macro BOOST_HAS_CONCEPTS from <boost/config.hpp> 
> (https://www.boost.org/doc/libs/1_81_0/libs/config/doc/html/boost_config/boost_macro_reference.html#boost_config.boost_macro_reference.macros_that_describe_possible_c___future_features) 
> not work:
> https://godbolt.org/z/3G8vTrjcf

I had no idea that was there to be honest - it's hopelessly out of date 
and refers to previous C++ concept proposal.  We need to figure out how 
to safely remove that.

You should be using BOOST_NO_CXX20_HDR_CONCEPTS for all new code.|
|

HTH, John.