...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
An interface for customising the behaviour of an initiating function.
template< typename CompletionToken, typename Signature> class async_result
Name |
Description |
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The concrete completion handler type for the specific signature. |
|
The return type of the initiating function. |
Name |
Description |
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Construct an async result from a given handler. |
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Obtain the value to be returned from the initiating function. |
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Initiate the asynchronous operation that will produce the result, and obtain the value to be returned from the initiating function. |
The async_result
traits class is used for determining:
The trait allows the handler and return types to be determined at the point where the specific completion handler signature is known.
This template may be specialised for user-defined completion token types. The primary template assumes that the CompletionToken is the completion handler.
Header: boost/asio/async_result.hpp
Convenience header: boost/asio.hpp