checks.</dt>
  </dl><br>
  <pre>
class_&amp; enable_pickling();
</pre>

  <dl class="function-semantics">
    <dt><b>Effects:</b> Defines the <code>__reduce__</code> method and the
    <code>__safe_for_unpickling__</code> attribute.</dt>

    <dt><b>Returns:</b> <code>*this</code></dt>

    <dt><b>Rationale:</b> Light-weight alternative to
    <code>def_pickle()</code>. Enables implementation of <a href=
    "pickle.html">pickle support</a> from Python.</dt>
  </dl><br>

  <h3><a name="bases-spec" id="bases