std::experimental::observer_ptr<W>::observer_ptr
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< cpp | experimental | observer ptr
constexpr observer_ptr() noexcept; constexpr observer_ptr( nullptr_t ) noexcept; |
(1) | (library fundamentals TS v2) |
explicit observer_ptr( element_type* p ) noexcept; |
(2) | (library fundamentals TS v2) |
template<class W2> 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 constructor does not participate in overload resolution unless 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
|