std::shared_ptr<T>:: owner_hash
|
|
|
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Member functions | ||||
Modifiers | ||||
Observers | ||||
(C++17)
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||||
(
until C++20*
)
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||||
shared_ptr::owner_hash
(C++26)
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||||
(C++26)
|
||||
Non-member functions | ||||
(until C++20)
(until C++20)
(until C++20)
(until C++20)
(until C++20)
(C++20)
|
||||
functions
(
until C++26*
)
|
||||
Helper classes | ||||
(C++20)
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||||
Deduction guides (C++17) |
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 .
Return value
A value that is identical for any
std::shared_ptr
or
std::weak_ptr
object sharing the same ownership.
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
|
Example
This section is incomplete
Reason: example |
See also
(C++26)
|
provides owner-based hashing for shared and weak pointers
(class) |