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| <h1 align="center"><a href="../index.html">Boost.Python</a></h1> |
| |
| <h2 align="center">Header <boost/python/long.hpp></h2> |
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| <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="#long_-spec">Class <code>long_</code></a></dt> |
| |
| <dd> |
| <dl class="page-index"> |
| <dt><a href="#long_-spec-synopsis">Class <code>long_</code> |
| synopsis</a></dt> |
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| </dd> |
| </dl> |
| </dd> |
| |
| <dt><a href="#examples">Example(s)</a></dt> |
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| <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/doc/current/lib/typesnumeric.html">long</a> |
| integer type.</p> |
| |
| <h2><a name="classes"></a>Classes</h2> |
| |
| <h3><a name="long_-spec"></a>Class <code>long_</code></h3> |
| |
| <p>Exposes the <a href= |
| "http://www.python.org/doc/current/lib/typesnumeric.html">numeric type |
| protocol</a> of Python's built-in <code>long</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>long_</code> is publicly derived from <code><a |
| href="object.html#object-spec">object</a></code>, the public object |
| interface applies to <code>long_</code> instances as well.</p> |
| |
| <h4><a name="long_-spec-synopsis"></a>Class <code>long_</code> |
| synopsis</h4> |
| <pre> |
| namespace boost { namespace python |
| { |
| class long_ : public object |
| { |
| public: |
| long_(); // new long_ |
| |
| template <class T> |
| explicit long_(T const& rhs); |
| |
| template <class T, class U> |
| long_(T const& rhs, U const& base); |
| }; |
| }} |
| </pre> |
| |
| <h2><a name="examples"></a>Example</h2> |
| <pre> |
| namespace python = boost::python; |
| |
| // compute a factorial without overflowing |
| python::long_ fact(long n) |
| { |
| if (n == 0) |
| return python::long_(1); |
| else |
| return n * fact(n - 1); |
| } |
| </pre> |
| |
| <p>Revised 1 October, 2002</p> |
| |
| <p><i>© Copyright <a href= |
| "http://www.boost.org/people/dave_abrahams.htm">Dave Abrahams</a> 2002.</i></p> |
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