std::uses_allocator<std::flat_multimap>
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< cpp | container | flat multimap
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std::flat_multimap
uses_allocator<std::flat_multimap>
Defined in header
<flat_map>
template< class Key, class T, class Compare,
(since C++23)
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> &&
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.
Contents
Inherited from std::integral_constant
Member constants
value
[static]
(public static member constant)
Member functions
operator bool
(public member function)
operator()
(C++14)
(public member function)
Member types
Type
Definition
value_type
bool
type
std::integral_constant <bool, value>
[edit] 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() {}