Function is_number

Source/Utils/json.hpp:18943–18946

! @brief return whether value is a number This function returns true if and only if the JSON value is a number. This includes both integer (signed and unsigned) and floating-point values. @return `true` if type is number (regardless whether integer, unsigned integer or floating-type), `false` otherwise. @complexity Constant. @exceptionsaf

        @since version 1.0.0
        */
        constexpr bool is_number() const noexcept
        {
            return is_number_integer() || is_number_float();
        }

        /*!
        @brief return whether value is an integer number