Function is_space

mars/boost/algorithm/string/classification.hpp:56–60

is_space predicate ! Construct the \c is_classified predicate for the \c ctype_base::space category. \param Loc A locale used for classification \return An instance of the \c is_classified predicate */

            \return An instance of the \c is_classified predicate
        */
        inline detail::is_classifiedF 
        is_space(const std::locale& Loc=std::locale())
        {
            return detail::is_classifiedF(std::ctype_base::space, Loc);
        }

        //! is_alnum predicate
        /*!