std:: uses_allocator <std::flat_map>
|
Defined in header
<flat_map>
|
||
|
template
<
class
Key,
class
T,
class
Compare,
class
KeyContainer,
class
MappedContainer,
class
Allocator
>
|
(since C++23) | |
Provides a transparent specialization of the std::uses_allocator type trait for std:: flat_map : 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
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operator bool
|
converts the object to
bool
, returns
value
(public member function) |
|
operator()
(C++14)
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returns
value
(public member function) |
Member types
| Type | Definition |
value_type
|
bool |
type
|
std:: integral_constant < bool , value > |
Example
#include <memory> #include <flat_map> static_assert( std::uses_allocator<std::flat_map<int, int>, void>::value == false && std::uses_allocator<std::flat_map<int, int>, std::allocator<int>>::value == true ); int main() {}
See also
|
(C++11)
|
checks if the specified type supports uses-allocator construction
(class template) |