# std::swap(std::valarray)

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< cpp‎ | numeric‎ | valarray

Defined in header `<valarray>` |  |
template< class T > void swap( std::valarray<T> &lhs, std::valarray<T> &rhs ) noexcept; |  | (since C++11)

Specializes the std::swap algorithm for std::valarray. Swaps the contents of `lhs` and `rhs`. Calls lhs.swap(rhs).

### Parameters

lhs, rhs | - | valarrays whose contents to swap

### Return value

(none)

### Complexity

Constant.

### See also

swap | swaps with another valarray (public member function)

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