std::owner_less
From cppreference.com
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.
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[edit] Nested types
Nested type | Definition |
is_transparent
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unspecified |
[edit] Member functions
operator() |
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, |
(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.
[edit] Notes
Feature-test macro | Value | Std | Feature |
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__cpp_lib_transparent_operators |
201510L |
(C++17) | Transparent std::owner_less (std::owner_less<void>) |
[edit] 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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