26 namespace seqan3::detail
44 template <std::ranges::input_range urng_t>
45 class view_persist :
public std::ranges::view_interface<view_persist<urng_t>>
55 view_persist() noexcept = default;
56 constexpr view_persist(view_persist const & rhs) noexcept = default;
57 constexpr view_persist(view_persist && rhs) noexcept = default;
58 constexpr view_persist & operator=(view_persist const & rhs) noexcept = default;
59 constexpr view_persist & operator=(view_persist && rhs) noexcept = default;
60 ~view_persist() noexcept = default;
65 view_persist(urng_t && _urange) :
66 urange{
new urng_t{std::move(_urange)}}
92 auto begin() const noexcept
115 return std::ranges::end(*urange);
119 auto end() const noexcept
124 return std::ranges::cend(*urange);
131 template <
typename urng_t>
132 view_persist(urng_t &&) -> view_persist<std::remove_reference_t<urng_t>>;
142 class persist_fn :
public adaptor_base<persist_fn>
146 using base_t = adaptor_base<persist_fn>;
150 using base_t::base_t;
159 template <std::ranges::viewable_range urng_t>
160 static auto impl(urng_t && urange)
162 return std::views::all(std::forward<urng_t>(urange));
168 template <std::ranges::range urng_t>
169 static auto impl(urng_t && urange)
171 static_assert(!std::is_lvalue_reference_v<urng_t>,
"BUG: lvalue-reference in persist_fn::impl().");
172 return view_persist{std::move(urange)};
224 inline auto constexpr persist = persist_fn{};
Provides seqan3::detail::adaptor_base and seqan3::detail::combined_adaptor.
Adaptations of algorithms from the Ranges TS.
Provides various transformation traits used by the range module.
Specifies requirements of an input range type for which the const version of that type satisfies the ...
Provides exceptions used in the I/O module.
Provides various transformation traits for use on iterators.
Adaptations of concepts from the Ranges TS.
Additional non-standard concepts for ranges.