Function dispatch

demo_example/asio/asio/impl/dispatch.hpp:224–232

template <typename Executor,
    ASIO_COMPLETION_TOKEN_FOR(void()) CompletionToken>
ASIO_INITFN_AUTO_RESULT_TYPE(CompletionToken, void()) dispatch(
    const Executor& ex, ASIO_MOVE_ARG(CompletionToken) token,
    typename constraint<
      execution::is_executor<Executor>::value || is_executor<Executor>::value
    >::type)
{
  return async_initiate<CompletionToken, void()>(
      detail::initiate_dispatch_with_executor<Executor>(ex), token);
}

template <typename ExecutionContext,
    ASIO_COMPLETION_TOKEN_FOR(void()) CompletionToken>