#### basic_deadline_timer::cancel

Cancel any asynchronous operations that are waiting on the timer.

    std::size_t cancel();
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    std::size_t cancel(
        asio::error_code & ec);
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| Copyright © 2003-2020 Christopher M. Kohlhoff Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)