std::shared_ptr<T>::owner_hash
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std::shared_ptr
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shared_ptr::owner_hash
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std::size_t owner_hash() const noexcept;
(since C++26)
Returns an unspecified value such that for any object other where owner_equal(other) is true, owner_hash() == other.owner_hash() is true.
This hashing is used to make shared and weak pointers usable as keys in unordered associative containers, typically through std::owner_hash.
Contents
[edit] Return value
A value that is identical for any std::shared_ptr or std::weak_ptr object sharing the same ownership.
[edit] Notes
| Feature-test macro | Value | Std | Feature |
|---|---|---|---|
__cpp_lib_smart_ptr_owner_equality |
202306L |
(C++26) | Enabling the use of std::shared_ptr as keys in unordered associative containers
|
[edit] Example
This section is incomplete
Reason: example
Reason: example