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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>Boost.Python - <boost/python/dict.hpp></title>
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<h3><a href="../../../../index.htm"><img height="86" width="277"
alt="C++ Boost" src="../../../../boost.png" border="0"></a></h3>
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<h1 align="center"><a href="../index.html">Boost.Python</a></h1>
<h2 align="center">Header <boost/python/dict.hpp></h2>
</td>
</tr>
</table>
<hr>
<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>
</dl>
</dd>
</dl>
</dd>
<dt><a href="#examples">Example(s)</a></dt>
</dl>
<hr>
<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< class T >
dict(T const & data);
// modifiers
void clear();
dict copy();
template <class T1, class T2>
tuple popitem();
template <class T>
object setdefault(T const &k);
template <class T1, class T2>
object setdefault(T1 const & k, T2 const & d);
void update(object_cref E);
template< class T >
void update(T const & E);
// observers
list values() const;
object get(object_cref k) const;
template<class T>
object get(T const & k) const;
object get(object_cref k, object_cref d) const;
object get(T1 const & k, T2 const & d) const;
bool has_key(object_cref k) const;
template< class T >
bool has_key(T const & 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<dict>(target.attr("__dict__"));
target.attr("__dict__") = d;
return result;
}
</pre>
<p>Revised 30 September, 2002</p>
<p><i>© Copyright <a href=
"../../../../people/dave_abrahams.htm">Dave Abrahams</a> 2002.</i></p>
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