### experimental::as_single

Create a completion token to specify that the completion handler arguments should be combined into a single argument.

    template<
        typename CompletionToken>
    constexpr as_single_t< typename decay< CompletionToken >::type > as_single(
        CompletionToken && completion_token);

##### Requirements

Header: `asio/experimental/as_single.hpp`

Convenience header: `asio.hpp`