></code> can be called again to continue
          the operation as if <code class="computeroutput"><span class="identifier">Flush</span><span class="special">::</span><span class="identifier">none</span></code>
          had been used. In this implementation, <code class="computeroutput"><span class="identifier">write</span></code>
          always flushes as much output as possible to the output buffer, and always
          uses the faster approach on the first call. So the effects of the flush
          