std::enable_shared_from_this<T>::enable_shared_from_this

Since C++11

Constructs a new enable_shared_from_this object. weak_this is value-initialized.

# Declarations

constexpr enable_shared_from_this() noexcept;

(since C++11)

enable_shared_from_this( const enable_shared_from_this& other ) noexcept;

(since C++11)

# Parameters

# Notes

There is no move constructor: moving from an object derived from enable_shared_from_this does not transfer its shared identity.

# Example

#include <memory>
 
struct Foo : public std::enable_shared_from_this<Foo>
{
    Foo() {} // implicitly calls enable_shared_from_this constructor
    std::shared_ptr<Foo> getFoo() { return shared_from_this(); }
};
 
int main()
{
    std::shared_ptr<Foo> pf1(new Foo);
    auto pf2 = pf1->getFoo(); // shares ownership of object with pf1
}

# See also