# std::experimental::swap(std::experimental::observer_ptr)

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< cpp‎ | experimental‎ | observer ptr

template< class W > void swap( observer_ptr<W>& lhs, observer_ptr<W>& rhs ) noexcept; |  | (library fundamentals TS v2)

Specializes the swap algorithm for std::experimental::observer_ptr. Swaps the pointers of lhs and rhs. Calls lhs.swap(rhs).

### Parameters

lhs, rhs | - | `observer_ptr`s whose contents to swap

### Return value

(none)

### Complexity

Constant.

### See also

swap | swaps the values of two objects (function template)
swap | swaps the watched objects (public member function)

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