|  | 
An interface for customising the behaviour of an initiating function.
template< typename Handler> class async_result
| Name | Description | 
|---|---|
| The return type of the initiating function. | 
| Name | Description | 
|---|---|
| Construct an async result from a given handler. | |
| Obtain the value to be returned from the initiating function. | 
This template may be specialised for user-defined handler types.
        Header: asio/async_result.hpp
      
        Convenience header: asio.hpp