std::uses_allocator<std::flat_set>

 

C++

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stack

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flat_set (C++23)

flat_multiset (C++23)

flat_map (C++23)

flat_multimap (C++23)

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span (C++20)

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std::flat_set

Member types

Member functions

flat_set::flat_set flat_set::operator= Iterators flat_set::beginflat_set::cbegin flat_set::endflat_set::cend flat_set::rbeginflat_set::crbegin flat_set::rendflat_set::crend Capacity flat_set::size flat_set::max_size flat_set::empty Observers flat_set::key_comp flat_set::value_comp      Modifiers flat_set::clear flat_set::insert flat_set::insert_range flat_set::emplace flat_set::emplace_hint flat_set::erase flat_set::swap flat_set::extract flat_set::replace Lookup flat_set::count flat_set::find flat_set::contains flat_set::equal_range flat_set::lower_bound flat_set::upper_bound Non-member functions operator==operator<=> swap(std::flat_set) erase_if(std::flat_set)

Helper classes

uses_allocator<std::flat_set>

Tags

sorted_unique      sorted_unique_t

Deduction guides

 

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

Provides a transparent specialization of the std::uses_allocator type trait for std::flat_set: 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_set>
 
static_assert(
    std::uses_allocator<std::flat_set<int>, void>::value == false &&
    std::uses_allocator<std::flat_set<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)

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