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    <title>Boost.Python - &lt;boost/python/dict.hpp&gt;</title>
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          <h1 align="center"><a href="../index.html">Boost.Python</a></h1>

          <h2 align="center">Header &lt;boost/python/dict.hpp&gt;</h2>
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    <h2>Contents</h2>

    <dl class="page-index">
      <dt><a href="#introduction">Introduction</a></dt>

      <dt><a href="#classes">Classes</a></dt>

      <dd>
        <dl class="page-index">
          <dt><a href="#dict-spec">Class <code>dict</code></a></dt>

          <dd>
            <dl class="page-index">
              <dt><a href="#dict-spec-synopsis">Class <code>dict</code>
              synopsis</a></dt>
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        </dl>
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      <dt><a href="#examples">Example(s)</a></dt>
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    <h2><a name="introduction"></a>Introduction</h2>

    <p>Exposes a <a href=
    "ObjectWrapper.html#TypeWrapper-concept">TypeWrapper</a> for the Python
    <a href=
    "http://www.python.org/dev/doc/devel/lib/typesmapping.html">dict</a>
    type.</p>

    <h2><a name="classes"></a>Classes</h2>

    <h3><a name="dict-spec"></a>Class <code>dict</code></h3>

    <p>Exposes the <a href=
    "http://www.python.org/dev/doc/devel/lib/typesmapping.html">mapping
    protocol</a> of Python's built-in <code>dict</code> type. The semantics
    of the constructors and member functions defined below can be fully
    understood by reading the <a href=
    "ObjectWrapper.html#TypeWrapper-concept">TypeWrapper</a> concept
    definition. Since <code>dict</code> is publicly derived from <code><a
    href="object.html#object-spec">object</a></code>, the public object
    interface applies to <code>dict</code> instances as well.</p>

    <h4><a name="dict-spec-synopsis"></a>Class <code>dict</code>
    synopsis</h4>
<pre>
namespace boost { namespace python
{
   class dict : public object
   {
      dict();

      template&lt; class T &gt;
      dict(T const &amp; data);

      // modifiers
      void clear();
      dict copy();

      template &lt;class T1, class T2&gt;
      tuple popitem();

      template &lt;class T&gt;
      object setdefault(T const &amp;k);

      template &lt;class T1, class T2&gt;
      object setdefault(T1 const &amp; k, T2 const &amp; d);

      void update(object_cref E);
 
      template&lt; class T &gt;
      void update(T const &amp; E);

      // observers
      list values() const;
    
      object get(object_cref k) const;

      template&lt;class T&gt;
      object get(T const &amp; k) const;

      object get(object_cref k, object_cref d) const;
      object get(T1 const &amp; k, T2 const &amp; d) const;

      bool has_key(object_cref k) const;

      template&lt; class T &gt;
      bool has_key(T const &amp; k) const;

      list items() const;
      object iteritems() const;
      object iterkeys() const;
      object itervalues() const;
      list keys() const;
  };
}}
</pre>

    <h2><a name="examples"></a>Example</h2>
<pre>
using namespace boost::python;
dict swap_object_dict(object target, dict d)
{
    dict result = extract&lt;dict&gt;(target.attr("__dict__"));
    target.attr("__dict__") = d;
    return result;
}
</pre>

    <p>Revised 30 September, 2002</p>

    <p><i>&copy; Copyright <a href=
    "http://www.boost.org/people/dave_abrahams.htm">Dave Abrahams</a> 2002.</i></p>
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