std::enable_shared_from_this<T>::weak_from_this
std::weak_ptr<T> weak_from_this() noexcept; | (1) |
(since C++17) (constexpr since C++26) |
std::weak_ptr<const T> weak_from_this() const noexcept; | (2) |
(since C++17) (constexpr since C++26) |
Returns a std::weak_ptr that tracks ownership of *this by all existing std::shared_ptr that refer to *this.
Return value
Notes
| Feature-test macro | Value | Std | Feature |
|---|---|---|---|
__cpp_lib_enable_shared_from_this | 201603L | (C++17) |
std::enable_shared_from_this::weak_from_this |
Example
See also
|
(C++11) | smart pointer with shared object ownership semantics (class template) |
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