Re: [boost] BOOST_HAS_PRAGMA_ONCE

Stephen Kelly-2 wrote

You added

+#ifndef BOOST_CONFIG_HPP +# include <boost/config.hpp> +#endif

instead of

+#include <boost/config.hpp>

Why the needless noise?

In theory the former prevents the compiler from opening the file at all whereas for the latter the compiler would have to open and reparse the header file. In reality as far as I know most modern compilers are aware of include guards and #pragma once and will not reparse headers when they are included multiple times -- View this message in context: http://boost.2283326.n4.nabble.com/BOOST-HAS-PRAGMA-ONCE-tp4671872p4672042.h... Sent from the Boost - Dev mailing list archive at Nabble.com.