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        <h1><img src="c++boost.gif" alt="c++boost.gif (8819 bytes)" align="middle" width="277" height="86">
            Welcome to Boost.org!</h1>
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                                <p>The Boost web site provides free peer-reviewed portable C++ source libraries. 
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                                <h2><a name="Latest News">Latest News</a></h2>
                                <p>????? 2003 - Version 1.31.0</p>
                                <ul>
                                  <li>Add news here!</li>
                                </ul>
                                <p>March 19, 2003 - Version 1.30.0</p>
                                <ul>
                                    <li>
                                        <a href="libs/filesystem/doc/index.htm">Filesystem Library</a>
                                    added - Portable paths, iteration over directories, and other useful filesystem 
                                    operations, from Beman Dawes.
                                    <li>
                                        <a href="libs/optional/doc/optional.html">Optional Library</a>
                                    added - A discriminated-union wrapper for optional values, from Fernando 
                                    Cacciola.
                                    <li>
                                        <a href="libs/numeric/interval/doc/interval.htm">Interval Library</a>
                                    added - Extends the usual arithmetic functions to mathematical intervals, from 
                                    Guillaume Melquiond, Hervé Brönnimann and Sylvain Pion.
                                    <li>
                                        <a href="libs/mpl/doc/index.html">MPL</a>
                                    added - Template metaprogramming framework of compile-time algorithms, 
                                    sequences and metafunction classes, from Aleksey Gurtovoy.
                                    <li>
                                        <a href="libs/spirit/index.html">Spirit Library</a>
                                    added - An LL (unlimited lookahead) parser framework that represents parsers 
                                    directly as EBNF grammars in inlined C++ source code, complete with semantic 
                                    actions, ASTs and much more, from Joel de Guzman and team.
                                    <li>
                                        <a href="libs/smart_ptr/index.htm">Smart Pointers Library</a> - cast functions are now 
                                        spelled <A href="libs/smart_ptr/shared_ptr.htm#static_pointer_cast">static_pointer_cast</A>
                                        / <A href="libs/smart_ptr/shared_ptr.htm#dynamic_pointer_cast">dynamic_pointer_cast</A>
                                        ; <A href="libs/smart_ptr/enable_shared_from_this.html">enable_shared_from_this</A>
                                        added; shared_ptr::shared_ptr(), shared_ptr::reset(), weak_ptr::weak_ptr(), 
                                        weak_ptr::reset() no longer throw; <A href="libs/smart_ptr/shared_ptr.htm#get_deleter">
                                            get_deleter</A> added; weak_ptr::get() removed; make_shared is now spelled <A href="libs/smart_ptr/weak_ptr.htm#lock">
                                            weak_ptr::lock()</A> ; <A href="libs/smart_ptr/intrusive_ptr.html">intrusive_ptr 
                                            documentation</A> added; some experimental undocumented shared_ptr features 
                                        have been removed; a <A href="libs/smart_ptr/sp_techniques.html">page describing 
                                            some smart pointer programming techniques</A>
                                    has been added.
                                    <LI>
                                        <A href="libs/utility/assert.html">boost/assert.hpp</A>, <A href="libs/utility/current_function.html">
                                            boost/current_function.hpp</A>, <A href="libs/utility/throw_exception.html">boost/throw_exception.hpp</A>,
                                        <A href="libs/utility/checked_delete.html">boost/checked_delete.hpp</A>
                                    have been documented.
                                    <li> <a href="libs/date_time/doc/index.html">Date-Time Library</a> - several fixes and small additions including an interface change to partial_date.  See  <a href="libs/date_time/doc/Changes.html">Date-Time Change History</a> for more details.
                                    </li>
                                    <li> <a href="libs/function/index.html">Function Library</a> 
                                    - added support for assignment to zero (to clear) and comparison against zero (to check if empty). </li>
                                    <li> 
                                    <a href="libs/utility/operators.htm#symmetry">
                                    Operators Library</a> - now takes advantage 
                                    of named return value optimization (NRVO) 
                                    when available, from Daniel Frey.</li>
                                    <li> <a href="status/compiler_status.html">
                                    Regression Tests</a> - Much expanded, plus a 
                                    very nice
                                    <a href="http://boost.sourceforge.net/regression-logs/">
                                    summary page</a> from Rene Rivera.</li>
                                    <LI> <a href="libs/test/index.html">Test Library</a> 
                                    - introduced following new facilities:
                                    <ul>
                                      <li>Automatic registration of unit tests</li>
                                      <li>XML log format</li>
                                      <li>XML report format</li>
                                      <li>BOOST_CHECK_NO_THROW test tool</li>
                                      <li>BOOST_BITWISE_CHECK test tool</li>
                                    </ul>
                                    
                                    For complete list of changes see Test Library <a href="libs/test/doc/release_notes.htm#v1_30_0">release notes</a>

                                    <li>
                                        Many fixes and enhancements to other libraries.</li>
                                </ul>
                                <p>October 10, 2002 - Version 1.29.0</p>
                                <ul>
                                    <li>
                                        <a href="libs/date_time/doc/index.html">Date-Time Library</a>
                                    added - Dates, times, leap seconds, infinity, and more, from Jeff Garland.
                                    <li>
                                        <a href="libs/dynamic_bitset/dynamic_bitset.html">Dynamic Bitset</a> added - A 
                                        runtime sized version of the <tt>std::bitset</tt>
                                    class from Jeremy Siek and Chuck Allison.
                                    <li>
                                        <a href="libs/format/index.htm">Format Library</a>
                                    added - Type-safe 'printf-like' format operations, from Samuel Krempp.
                                    <li>
                                        <a href="libs/function/index.html">Function Library</a>: Major syntactic 
                                        changes have been made. Some old syntax and little-used features have been 
                                        deprecated (and will be removed shortly), and the syntax for the <code>boost::function</code>
                                        class template has been greatly improved on conforming compilers. Please see 
                                        the <a href="libs/function/index.html#compatibility">compatibility note</a>
                                    for more information.
                                    <li>
                                        <a href="libs/multi_array/doc/index.html">Multi-array Library</a>
                                    added - Multidimensional containers and adaptors for arrays of contiguous data, 
                                    from Ron Garcia.
                                    <li>
                                        <a href="libs/preprocessor/index.html">Preprocessor Library</a>: Major 
                                    upgrade, from Paul Mensonides.
                                    <li>
                                        <a href="libs/python/doc/index.html">Python Library</a>
                                    - Version 2 is released, from Dave Abrahams and others. This is a major rewrite 
                                    which works on many more compilers and platforms, with a completely new 
                                    interface and lots of new features. Boost.Python v2 requires Python 2.2 or 
                                    later.
                                    <li>
                                        <a href="libs/signals/doc/index.html">Signals Library</a>
                                    added - Managed signals &amp; slots callback implementation, from Doug Gregor.
                                    <li>
                                        <a href="libs/test/doc/index.htm">Test Library</a>: Major new version, 
                                    including full unit test capabilities, from Gennadiy Rozental.
                                    <li>
                                        <a href="libs/numeric/ublas/doc/index.htm">uBLAS Library</a> added - Basic 
                                        linear algebra for dense, packed and sparse matrices, from Joerg Walter and 
                                        Mathias Koch.</li>
                                </ul>
                                <p>May 15, 2002 - Version 1.28.0</p>
                                <ul>
                                    <li>
                                        The Boost mailing lists are now also accessible as <a href="more/mailing_lists.htm#newsgroup">
                                            newsgroups</a>.
                                    <li>
                                        A powerful <a href="http://aspn.activestate.com/ASPN/Mail/Archives/boost/">mailing 
                                            list archive</a> has been contributed by the <a href="http://aspn.activestate.com/ASPN">
                                            ActiveState Programmer Network</a>.
                                    <li>
                                        <a href="libs/lambda/doc/index.html">Lambda Library</a> added, from Jaakko 
                                        Järvi and Gary Powell. Define small unnamed function objects at the actual call 
                                        site:<br>
                                        <br>
                                        <code>&nbsp;&nbsp;&nbsp; for_each(a.begin(), a.end(), std::cout &lt;&lt; _1 
                                            &lt;&lt; ' ');</code><br>
                                    &nbsp;
                                    <li>
                                        <a href="libs/io/doc/ios_state.html">I/O State Saver Library added</a>
                                    - Save I/O state to prevent jumbled data, from Daryle Walker.
                                    <li>
                                        <a href="libs/config/config.htm">Configuration Library</a>: User code 
                                    should not use BOOST_NO_LIMITS.
                                    <li>
                                        <a href="libs/random/index.html">Random Number Library</a>: Avoid compiler 
                                    warnings
                                    <li>
                                        <a href="libs/smart_ptr/index.htm">Smart Pointers Library</a>: Added <a href="libs/smart_ptr/shared_ptr.htm#shared_polymorphic_cast">
                                            shared_polymorphic_cast</a> and <a href="libs/smart_ptr/shared_ptr.htm#shared_polymorphic_downcast">
                                            shared_polymorphic_downcast</a>.
                                    <li>
                                        <a href="libs/function/index.html">Function Library</a>: Now supports function 
                                        objects with the unary <code>&amp;</code>
                                    operator overloaded.
                                    <li>
                                        <a href="libs/utility/utility.htm">Utility Library</a>: Added <code>addressof()</code>
                                    function.
                                    <li>
                                        The usual small fixes and tweaks.</li>
                                </ul>
                                <p>February 5, 2002 - Version 1.27.0</p>
                                <ul>
                                    <li>
                                        <a href="libs/python/doc/index.html">Python Library</a>: Scott Snyder 
                                    contributed inplace operator support.
                                    <li>
                                        <a href="libs/integer/index.htm">Integer Library</a>: Daryle Walker contributed 
                                        enhancements to the <a href="libs/integer/integer.htm">type selection templates</a>, 
                                        and added new compile-time <a href="libs/integer/doc/integer_mask.html">bit mask</a>,
                                        <a href="libs/integer/doc/static_log2.html">binary logarithm</a>, and <a href="libs/integer/doc/static_min_max.html">
                                            extrema</a>
                                    templates.
                                    <li>
                                        <a href="libs/function/index.html">Function Library</a>: user may request that <code>
                                            boost::function</code> objects store a reference to a function object 
                                        target instead of a copy, using <a href="libs/bind/ref.html"><code>ref</code></a>. 
                                    Stateless objects are optimized so that they require no dynamic storage.
                                    <li>
                                        <a href="libs/math/quaternion/index.html">Quaternions</a>: added support 
                                    for GCC 2.95.x.
                                    <li>
                                        <a href="libs/math/octonion/index.html">Octonions</a>: added support for 
                                    GCC 2.95.x.
                                    <li>
                                        <a href="libs/smart_ptr/index.htm">Smart Pointers Library</a>: Peter Dimov 
                                        contributed a new implementation that fixes some bugs and adds some features 
                                        including <a href="libs/smart_ptr/compatibility.htm#threadsafe">thread safety</a>
                                        when manipulating the use count, <a href="libs/smart_ptr/shared_ptr.htm#constructors">
                                            custom delete functions</a>, a new <a href="libs/smart_ptr/weak_ptr.htm">weak_ptr</a>, 
                                        and <a href="libs/smart_ptr/shared_ptr.htm#shared_static_cast">shared_static_cast</a>
                                        and <a href="libs/smart_ptr/shared_ptr.htm#shared_dynamic_cast">shared_dynamic_cast</a>.
                                    <li>
                                        <a href="libs/preprocessor/doc/index.html">Preprocessor Library</a>: changed 
                                        macro prefix from BOOST_PREPROCESSOR to BOOST_PP, added support for list data 
                                        structure manipulation, added examples, made library ANSI C friendly, added 
                                        generalized <a href="libs/preprocessor/doc/ref/for.html">repetition</a> and <a href="libs/preprocessor/doc/ref/while.html">
                                            iteration</a>
                                    primitives, improved reference manual.
                                    <li>
                                        <a href="libs/thread/doc/index.html">Threads Library:</a>
                                    Mac Carbon implementation contributed by Mac Murrett.
                                    <li>
                                        Minor fixes to many libraries.</li>
                                </ul>
                            </td>
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        <p>Revised 
            <!--webbot bot="Timestamp" S-Type="EDITED" S-Format="%d %B, %Y" startspan -->20 March, 2003<!--webbot bot="Timestamp" endspan i-checksum="28830" --></p>
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