std::uses_allocator<std::flat_multimap>

 

C++

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Feature test macros (C++20)

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Symbols index

External libraries

 

Containers library

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array (C++11)

vector

vector<bool>

inplace_vector (C++26)

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list

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multiset

map

multimap

Unordered associative

unordered_set (C++11)

unordered_multiset (C++11)

unordered_map (C++11)

unordered_multimap (C++11)

Adaptors

stack

queue

priority_queue

flat_set (C++23)

flat_multiset (C++23)

flat_map (C++23)

flat_multimap (C++23)

Views

span (C++20)

mdspan (C++23)

Tables

Iterator invalidation

Member function table

Non-member function table

 

std::flat_multimap

Member types

Member functions

flat_multimap::flat_multimap    flat_multimap::operator= Modifiers flat_multimap::clear flat_multimap::erase flat_multimap::swap flat_multimap::extract flat_multimap::replace flat_multimap::insert flat_multimap::insert_range flat_multimap::emplace flat_multimap::emplace_hint Lookup flat_multimap::count flat_multimap::find flat_multimap::contains flat_multimap::equal_range flat_multimap::lower_bound flat_multimap::upper_bound Iterators flat_multimap::beginflat_multimap::cbegin flat_multimap::endflat_multimap::cend flat_multimap::rbeginflat_multimap::crbegin flat_multimap::rendflat_multimap::crend Capacity flat_multimap::size flat_multimap::max_size flat_multimap::empty Observers flat_multimap::key_comp flat_multimap::keys flat_multimap::value_comp flat_multimap::values

Non-member functions

swap(std::flat_multimap) erase_if(std::flat_multimap)     operator==operator<=>

Helper classes

uses_allocator<std::flat_multimap>

Tags

sorted_equivalent          sorted_equivalent_t

Deduction guides

 

Defined in header <flat_map>
template< class Key, class T, class Compare,           class KeyContainer, class MappedContainer, class Allocator > struct uses_allocator<std::flat_multimap<Key, T, Compare,                       KeyContainer, MappedContainer>, Allocator>     : std::bool_constant<std::uses_allocator_v<KeyContainer, Allocator> &&                          std::uses_allocator_v<MappedContainer, Allocator>> {};		(since C++23)

Provides a transparent specialization of the std::uses_allocator type trait for std::flat_multimap: the container adaptor uses allocator if and only if the underlying container does.

Inherited from std::integral_constant

Member constants

value [static]

true (public static member constant)

Member functions

operator bool	converts the object to bool, returns value (public member function)
operator() (C++14)	returns value (public member function)

Member types

Type	Definition
value_type	bool
type	std::integral_constant<bool, value>

Example

Run this code

#include <memory>
#include <flat_map>
 
static_assert(
    std::uses_allocator<std::flat_multimap<int, int>, void>::value == false &&
    std::uses_allocator<std::flat_multimap<int, int>, std::allocator<int>>::value == true
);
 
int main() {}

See also

uses_allocator (C++11)

checks if the specified type supports uses-allocator construction (class template)