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The real handler type to be used for the asynchronous operation.
typedef asio::async_result< decay_t< CompletionToken >, Signatures... >::completion_handler_type completion_handler_type;
Name |
Description |
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The concrete completion handler type for the specific signature. |
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The return type of the initiating function. |
Name |
Description |
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async_result [constructor] |
Construct an async result from a given handler. |
Obtain the value to be returned from the initiating function. |
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initiate [static] |
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: asio/async_result.hpp
Convenience header: asio.hpp