std::experimental::observer_ptr<W>::observer_ptr - cppreference.com
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constexpr observer_ptr() noexcept; constexpr observer_ptr( nullptr_t ) noexcept; |
(1) | (library fundamentals TS v2) |
constexpr explicit observer_ptr( element_type* p ) noexcept; |
(2) | (library fundamentals TS v2) |
template< class W2 > constexpr observer_ptr( observer_ptr<W2> other ) noexcept; |
(3) | (library fundamentals TS v2) |
observer_ptr( const observer_ptr& other ) = default; |
(4) | (library fundamentals TS v2) (implicitly declared) |
observer_ptr( observer_ptr&& other ) = default; |
(5) | (library fundamentals TS v2) (implicitly declared) |
1) Constructs an observer_ptr that has no corresponding watched object.
2) Constructs an observer_ptr that watches p.
3) Constructs an observer_ptr that watches other.get(). This overload participates in overload resolution only if W2* is convertible to element_type*.
4,5) Implicitly declared copy and move constructors. Constructs an observer_ptr that watches other.get().
Parameters
| p | - | a pointer to an object to watch |
| other | - | another observer_ptr to copy from
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