Method NotNullStrLen

include/cereal/external/rapidjson/document.h:340–343

private:
    SizeType NotNullStrLen(const CharType* str) {
        CEREAL_RAPIDJSON_ASSERT(str != 0);
        return internal::StrLen(str);
    }

    /// Empty string - used when passing in a NULL pointer
    static const Ch emptyString[];