17 #include <range/v3/view/repeat.hpp> 35 SEQAN3_CONCEPT Fields = is_value_specialisation_of_v<t, fields>;
61 template <
typename field_types,
62 typename field_types_as_ids,
63 typename selected_field_ids,
65 typename ... return_types>
66 struct select_types_with_ids
76 template <
typename field_types,
77 typename field_types_as_ids,
78 typename selected_field_ids,
80 typename ... return_types>
81 using select_types_with_ids_t =
typename select_types_with_ids<field_types,
85 return_types...>::type;
87 template <
typename field_types,
88 typename field_types_as_ids,
89 typename selected_field_ids,
91 typename ... return_types>
92 requires field_no < selected_field_ids::as_array.size()
93 struct select_types_with_ids<field_types, field_types_as_ids, selected_field_ids, field_no, return_types...>
95 static_assert(field_types_as_ids::contains(selected_field_ids::as_array[field_no]),
96 "You selected a field that was not in field_types_as_ids.");
99 using type = select_types_with_ids_t<field_types,
104 meta::at_c<field_types,
105 field_types_as_ids::index_of(selected_field_ids::as_array[field_no])>>;
118 template <field f,
typename field_types,
typename field_
ids>
120 auto & get_or_ignore(record<field_types, field_ids> & r)
122 if constexpr (field_ids::contains(f))
123 return std::get<field_ids::index_of(f)>(r);
129 template <field f,
typename field_types,
typename field_
ids>
130 auto const & get_or_ignore(record<field_types, field_ids>
const & r)
132 if constexpr (field_ids::contains(f))
133 return std::get<field_ids::index_of(f)>(r);
139 template <
size_t i,
typename ... types>
142 if constexpr (i <
sizeof...(types))
143 return std::get<i>(t);
149 template <
size_t i,
typename ... types>
152 if constexpr (i <
sizeof...(types))
153 return std::get<i>(t);
167 template <field f,
typename field_types,
typename field_
ids,
typename or_type>
169 decltype(
auto) get_or(record<field_types, field_ids> & r, or_type && or_value)
171 if constexpr (field_ids::contains(f))
172 return std::get<field_ids::index_of(f)>(r);
174 return std::forward<or_type>(or_value);
178 template <field f,
typename field_types,
typename field_
ids,
typename or_type>
179 decltype(
auto) get_or(record<field_types, field_ids> const & r, or_type && or_value)
181 if constexpr (field_ids::contains(f))
182 return std::get<field_ids::index_of(f)>(r);
184 return std::forward<or_type>(or_value);
188 template <
size_t i,
typename or_type,
typename ... types>
189 decltype(
auto) get_or(
std::tuple<types...> & t, or_type && or_value)
191 if constexpr (i <
sizeof...(types))
192 return std::get<i>(t);
194 return std::forward<or_type>(or_value);
198 template <
size_t i,
typename or_type,
typename ... types>
199 decltype(
auto) get_or(
std::tuple<types...> const & t, or_type && or_value)
201 if constexpr (i <
sizeof...(types))
202 return std::get<i>(t);
204 return std::forward<or_type>(or_value);
213 template <std::ranges::InputRange rng_t>
214 inline auto & range_wrap_ignore(rng_t & range)
225 inline auto range_wrap_ignore(ignore_t
const &)
SeqAn specific customisations in the standard namespace.
Provides the seqan3::record template and the seqan3::field enum.
Adaptations of concepts from the Ranges TS.
constexpr detail::repeat_fn repeat
A view factory that repeats a given value infinitely.
Definition: repeat.hpp:353
Definition: aligned_sequence_concept.hpp:35
Provides various type traits on generic types.
meta::list< types... > type_list
Type that contains multiple types, an alias for meta::list.
Definition: type_list.hpp:27