Returns an awaitable object that may be used to determine whether the coroutine throws if trying to suspend when it has been cancelled.

constexpr unspecified throw_if_cancelled();
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Returns an awaitable object that may be used to specify whether the coroutine throws if trying to suspend when it has been cancelled.

constexpr unspecified throw_if_cancelled(
    bool value);
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Requirements

Header: asio/this_coro.hpp

Convenience header: asio.hpp