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deduction guides for std::flat_set

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< cpp‎ | container‎ | flat set
 
 
 
std::flat_set
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Defined in header <flat_set>
template< class KeyContainer,

          class Compare = std::less <typename KeyContainer::value_type> >
flat_set( KeyContainer, Compare = Compare() )

    -> flat_set<typename KeyContainer::value_type, Compare, KeyContainer>;
(1) (since C++23)
template< class KeyContainer, class Allocator >

flat_set( KeyContainer, Allocator )
    -> flat_set<typename KeyContainer::value_type,

                std::less <typename KeyContainer::value_type>, KeyContainer>;
(2) (since C++23)
template< class KeyContainer, class Compare, class Allocator >

flat_set( KeyContainer, Compare, Allocator )

    -> flat_set<typename KeyContainer::value_type, Compare, KeyContainer>;
(3) (since C++23)
template< class KeyContainer,

          class Compare = std::less <typename KeyContainer::value_type> >
flat_set( std::sorted_unique_t, KeyContainer, Compare = Compare() )

    -> flat_set<typename KeyContainer::value_type, Compare, KeyContainer>;
(4) (since C++23)
template< class KeyContainer, class Allocator >

flat_set( std::sorted_unique_t, KeyContainer, Allocator )
    -> flat_set<typename KeyContainer::value_type,

                std::less <typename KeyContainer::value_type>, KeyContainer>;
(5) (since C++23)
template< class KeyContainer, class Compare, class Allocator >

flat_set( std::sorted_unique_t, KeyContainer, Compare, Allocator )

    -> flat_set<typename KeyContainer::value_type, Compare, KeyContainer>;
(6) (since C++23)
template< class InputIt,

          class Compare = std::less </*iter-val-t*/<InputIt>> >
flat_set( InputIt, InputIt, Compare = Compare() )

    -> flat_set</*iter-val-t*/<InputIt>, Compare>;
(7) (since C++23)
template< class InputIt,

          class Compare = std::less </*iter-val-t*/<InputIt>> >
flat_set( std::sorted_unique_t, InputIt, InputIt, Compare = Compare() )

    -> flat_set</*iter-val-t*/<InputIt>, Compare>;
(8) (since C++23)
template< ranges::input_range R,

          class Compare = std::less <ranges::range_value_t <R>>,
          class Allocator = std::allocator <ranges::range_value_t <R>> >
flat_set( std::from_range_t, R&&, Compare = Compare(), Allocator = Allocator() )
    -> flat_set<ranges::range_value_t <R>, Compare,
                std::vector <ranges::range_value_t <R>,

                /*alloc-rebind*/<Allocator, ranges::range_value_t <R>>>>;
(9) (since C++23)
template< ranges::input_range R, class Allocator >

flat_set( std::from_range_t, R&&, Allocator )
    -> flat_set<ranges::range_value_t <R>, std::less <ranges::range_value_t <R>>,
                std::vector <ranges::range_value_t <R>,

                /*alloc-rebind*/<Allocator, ranges::range_value_t <R>>>>;
(10) (since C++23)
template< class Key, class Compare = std::less <Key> >

flat_set( std::initializer_list <Key>, Compare = Compare() )

    -> flat_set<Key, Compare>;
(11) (since C++23)
template< class Key, class Compare = std::less <Key> >

flat_set( std::sorted_unique_t,
               std::initializer_list <Key>, Compare = Compare() )

    -> flat_set<Key, Compare>;
(12) (since C++23)
Exposition-only helper type aliases
template< class InputIt >

using /*iter-val-t*/ =

    typename std::iterator_traits <InputIt>::value_type;
(exposition only*)
template< class Allocator, class T >

using /*alloc-rebind*/ =

    typename std::allocator_traits <Allocator>::template rebind_alloc<T>;
(exposition only*)

These deduction guides are provided for to allow deduction from:

1) A container and a comparator.
2) A container and an allocator.
3) A container, a comparator and an allocator.
4) The std::sorted_unique_t tag, a container and a comparator.
5) The std::sorted_unique_t tag, a container and an allocator.
6) The std::sorted_unique_t tag, a container, a comparator and an allocator.
7) An iterator range and a comparator.
8) The std::sorted_unique_t tag, an iterator range and a comparator.
9) The std::from_range_t tag, an input_range range, a comparator and an allocator.
10) The std::from_range_t tag, an input_range range and an allocator.
11) The std::initializer_list and a comparator.
12) The std::sorted_unique_t tag, the std::initializer_list and a comparator.

These overloads participate in overload resolution only if InputIt satisfies LegacyInputIterator, Alloc satisfies Allocator, and Comp does not satisfy Allocator.

Note: the extent to which the library determines that a type does not satisfy LegacyInputIterator is unspecified, except that as a minimum integral types do not qualify as input iterators. Likewise, the extent to which it determines that a type does not satisfy Allocator is unspecified, except that as a minimum the member type Alloc::value_type must exist and the expression std::declval <Alloc&>().allocate(std::size_t {}) must be well-formed when treated as an unevaluated operand.

[edit] Example

This section is incomplete
Reason: no example
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