NAME¶

std::enable_shared_from_this::weak_from_this - std::enable_shared_from_this::weak_from_this

Synopsis¶

std::weak_ptr<T> weak_from_this() noexcept; (1) (since C++17)
std::weak_ptr<T const> weak_from_this() const noexcept; (2) (since C++17)

Returns a std::weak_ptr<T> that tracks ownership of *this by all existing
std::shared_ptr that refer to *this.

Return value¶

std::weak_ptr<T> that shares ownership of *this with pre-existing std::shared_ptrs.

Notes¶

weak_from_this copies the exposition only weak_ptr member that is part of
enable_shared_from_this.

Feature-test macro Value Std Feature __cpp_lib_enable_shared_from_this 201603L (C++17) std::enable_shared_from_this::weak_from_this

Example¶

This section is incomplete
Reason: no example

See also¶

shared_ptr smart pointer with shared object ownership semantics
(C++11) (class template)

Category:¶

* Todo no example