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deduction guides for std::flat_multimap - cppreference.com

template< class KeyContainer, class MappedContainer, class Compare = std::less<typename KeyContainer::value_type> > flat_multimap( KeyContainer, MappedContainer, Compare = Compare() ) -> flat_multimap<typename KeyContainer::value_type, typename MappedContainer::value_type, Compare, KeyContainer, MappedContainer>; (1) (since C++23) template< class KeyContainer, class MappedContainer, class Allocator > flat_multimap( KeyContainer, MappedContainer, Allocator ) -> flat_multimap<typename KeyContainer::value_type, typename MappedContainer::value_type, std::less<typename KeyContainer::value_type>, KeyContainer, MappedContainer>; (2) (since C++23) template< class KeyContainer, class MappedContainer, class Compare, class Allocator > flat_multimap( KeyContainer, MappedContainer, Compare, Allocator ) -> flat_multimap<typename KeyContainer::value_type, typename MappedContainer::value_type, Compare, KeyContainer, MappedContainer>; (3) (since C++23) template< class KeyContainer, class MappedContainer, class Compare = std::less<typename KeyContainer::value_type> > flat_multimap( std::sorted_equivalent_t, KeyContainer, MappedContainer, Compare = Compare() ) -> flat_multimap<typename KeyContainer::value_type, typename MappedContainer::value_type, Compare, KeyContainer, MappedContainer>; (4) (since C++23) template< class KeyContainer, class MappedContainer, class Allocator > flat_multimap( std::sorted_equivalent_t, KeyContainer, MappedContainer, Allocator ) -> flat_multimap<typename KeyContainer::value_type, typename MappedContainer::value_type, std::less<typename KeyContainer::value_type>, KeyContainer, MappedContainer>; (5) (since C++23) template< class KeyContainer, class MappedContainer, class Compare, class Allocator> flat_multimap( std::sorted_equivalent_t, KeyContainer, MappedContainer, Compare, Allocator ) -> flat_multimap<typename KeyContainer::value_type, typename MappedContainer::value_type, Compare, KeyContainer, MappedContainer>; (6) (since C++23) template< class InputIt, class Compare = std::less</*iter-key-t*/<InputIt>> > flat_multimap( InputIt, InputIt, Compare = Compare() ) -> flat_multimap</*iter-key-t*/<InputIt>, /*iter-mapped-t*/<InputIt>, Compare>; (7) (since C++23) template< class InputIt, class Compare = std::less</*iter-key-t*/<InputIt>> > flat_multimap( std::sorted_equivalent_t, InputIt, InputIt, Compare = Compare() ) -> flat_multimap</*iter-key-t*/<InputIt>, /*iter-mapped-t*/<InputIt>, Compare>; (8) (since C++23) template< ranges::input_range R, class Compare = std::less</*range-key-t*/<R>>, class Allocator = allocator<byte> > flat_multimap( std::from_range_t, R&&, Compare = Compare(), Allocator = Allocator() ) -> flat_multimap</*range-key-t*/<R>, /*range-mapped-t*/<R>, Compare, std::vector</*range-key-t*/<R>, /*alloc-rebind*/<Allocator, /*range-key-t*/<R>>>, std::vector</*range-mapped-t*/<R>, /*alloc-rebind*/<Allocator, /*range-mapped-t*/<R>>>>; (9) (since C++23) template< ranges::input_range R, class Allocator > flat_multimap( std::from_range_t, R&&, Allocator ) -> flat_multimap</*range-key-t*/<R>, /*range-mapped-t*/<R>, std::less</*range-key-t*/<R>>, std::vector</*range-key-t*/<R>, /*alloc-rebind*/<Allocator, /*range-key-t*/<R>>>, std::vector</*range-mapped-t*/<R>, /*alloc-rebind*/<Allocator, /*range-mapped-t*/<R>>>>; (10) (since C++23) template< class Key, class T, class Compare = std::less<Key> > flat_multimap( std::initializer_list<pair<Key, T>>, Compare = Compare() ) -> flat_multimap<Key, T, Compare>; (11) (since C++23) (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*) (exposition only*) template< class InputIt > using /*iter-mapped-t*/ = std::tuple_element_t<1, /*iter-val-t*/<InputIt>>; (exposition only*) template< class Allocator, class T > using /*alloc-rebind*/ = typename std::allocator_traits<Allocator>::template rebind_alloc<T>; (exposition only*) (exposition only*) (exposition only*)

These deduction guides are provided for to allow deduction from:

1) A key-container, a mapped-container and a comparator.

2) A key-container, a mapped-container and an allocator.

3) A key-container, a mapped-container, a comparator and an allocator.

4) The std::sorted_equivalent_t tag, a key-container, a mapped-container and a comparator.

5) The std::sorted_equivalent_t tag, a key-container, a mapped-container and an allocator.

6) The std::sorted_equivalent_t tag, a key-container, a mapped-container, a comparator and an allocator.

7) An iterator range and a comparator.

8) The std::sorted_equivalent_t tag, an iterator range 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.

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