std:: owner_less
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Defined in header
<memory>
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template
<>
struct owner_less < void > ; |
(since C++17) | |
std:: owner_less < void > is a specialization of std::owner_less with parameter types deduced.
Nested types
Nested type | Definition |
is_transparent
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unspecified |
Member functions
operator()
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compares its arguments using owner-based semantics
(function) |
std::owner_less<void>:: operator()
template
<
class
T,
class
U
>
bool
operator
(
)
(
const
std::
shared_ptr
<
T
>
&
lhs,
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(since C++17) | |
template
<
class
T,
class
U
>
bool
operator
(
)
(
const
std::
shared_ptr
<
T
>
&
lhs,
|
(since C++17) | |
template
<
class
T,
class
U
>
bool
operator
(
)
(
const
std::
weak_ptr
<
T
>
&
lhs,
|
(since C++17) | |
template
<
class
T,
class
U
>
bool
operator
(
)
(
const
std::
weak_ptr
<
T
>
&
lhs,
|
(since C++17) | |
Compares lhs and rhs using owner-based semantics. Effectively calls lhs. owner_before ( rhs ) .
The ordering is strict weak ordering relation.
lhs and rhs are equivalent only if they are both empty or share ownership.
Parameters
lhs, rhs | - | shared-ownership pointers to compare |
Return value
true if lhs is less than rhs as determined by the owner-based ordering.
Notes
Feature-test macro | Value | Std | Feature |
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__cpp_lib_transparent_operators
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201510L | (C++17) | Transparent std::owner_less ( std:: owner_less < void > ) |
See also
provides owner-based ordering of shared pointers
(public member function of
std::shared_ptr<T>
)
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provides owner-based ordering of weak pointers
(public member function of
std::weak_ptr<T>
)
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