std::experimental::ranges::View
From cppreference.com
< cpp | experimental | ranges
Defined in header <experimental/ranges/range>
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template
<
class T >
concept bool View = Range<T> && Semiregular<T> && /* view-predicate<T> */ ; |
(ranges TS) | |
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template
<
class T >
struct enable_view { } ; |
(ranges TS) | |
struct view_base {}; |
(ranges TS) | |
The concept View<T> specifies the semiregular range T has constant-time copy, move, and assignment operations.
The /* view-predicate<T> */ portion of the concept is determined as follows:
- if the qualified-id ranges::enable_view <T> :: type is valid and denotes a type, ranges::enable_view <T> :: type :: value
- otherwise, if std::is_base_of_v < ranges::view_base, T> is true, true
- otherwise, if
Tis a specialization of std::initializer_list, std::set, std::multiset, std::unordered_set, or std::unordered_multiset, false - otherwise, if both
Tandconst TsatisfyRangeand ranges:: reference_t < ranges::iterator_t <T>> is not the same type as ranges:: reference_t < ranges::iterator_t < const T>> , false - otherwise, true.