20namespace seqan3::detail
40template <
typename underlying_iterator_t>
41struct maybe_iterator_category
43#if SEQAN3_DOXYGEN_ONLY(1) 0
56concept has_iterator_category =
requires () {
typename t::iterator_category; };
59#if SEQAN3_WORKAROUND_GCC_96070
63template <
typename underlying_iterator_t>
64 requires (!has_iterator_category<std::iterator_traits<underlying_iterator_t>>)
65struct maybe_iterator_category<underlying_iterator_t>
67 using iterator_category = void;
72template <
typename underlying_iterator_t>
73 requires has_iterator_category<std::iterator_traits<underlying_iterator_t>>
74struct maybe_iterator_category<underlying_iterator_t>
90template <
typename underling_iterator_t>
91struct maybe_inherited_iterator_category :
public maybe_iterator_category<underling_iterator_t>
95template <
typename underling_iterator_t>
96 requires has_iterator_category<underling_iterator_t>
97struct maybe_inherited_iterator_category<underling_iterator_t>
109template <
typename it_t>
110 requires std::input_or_output_iterator<it_t>
112 std::contiguous_iterator<it_t>,
113 std::contiguous_iterator_tag,
126namespace seqan3::detail
142template <
typename it_t>
150template <
typename it_t>
152struct iter_pointer<it_t>
165template <
typename it_t>
166using iter_pointer_t =
typename iter_pointer<it_t>::type;