std::uses_allocator<std::flat_multimap>
From cppreference.com
| 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
(C++11) |
checks if the specified type supports uses-allocator construction (class template) |