82   using _base = std::variant<BOOST_OUTCOME_SYSTEM_ERROR2_NAMESPACE::error, detail::devoid<T>>;  typedef in result
117     if(_base::index() == 0)  in _check()
139   constexpr _base &_internal() noexcept { return *this; }  in _internal()
140   constexpr const _base &_internal() const noexcept { return *this; }  in _internal()
158       : _base(std::move(o))
164       : _base(o)
170       : _base(std::move(o))
176       : _base(o)
181   using _base::_base;
185       : _base(in_place_type<detail::void_>)  in result()
196 …: _base(std::in_place_index<0>, std::forward<Arg1>(arg1), std::forward<Arg2>(arg2), std::forward<A…  in result()
207 …: _base(std::in_place_index<1>, std::forward<Arg1>(arg1), std::forward<Arg2>(arg2), std::forward<A…  in result()
220 …: _base(std::in_place_index<0>, make_status_code(static_cast<U &&>(v), static_cast<Args &&>(args).…  in result()
225   constexpr void swap(result &o) noexcept(std::is_nothrow_swappable_v<_base>) { _base::swap(o); }  in swap()
231   constexpr bool has_value() const noexcept { return _base::index() == 1; }  in has_value()
235   constexpr bool has_error() const noexcept { return _base::index() == 0; }  in has_error()