ode>
          instead of plain <code class="computeroutput"><span class="identifier">T</span></code>.
        </p>
<p>
          <a name="wait_all_until_error"></a><code class="computeroutput"><span class="identifier">wait_all_until_error</span><span class="special">()</span></code> pops that <code class="computeroutput"><span class="identifier">future</span><span class="special">&lt;</span> <span class="identifier">T</span> <span class="special">&gt;</span></code> and calls its <a class="link" href="../..