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Added paragraph describing some smart pointer changes.

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<p>Revised
<!--webbot bot="Timestamp" S-Type="EDITED" S-Format="%d %B, %Y" startspan -->04 February, 2003<!--webbot bot="Timestamp" endspan i-checksum="40404" --></p>
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added - A discriminated-union wrapper for optional values, from Fernando
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added - Extends the usual arithmetic functions to mathematical intervals, from
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added - Template metaprogramming framework of compile-time algorithms,
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added - An LL (unlimited lookahead) parser framework that represents parsers
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<a href="libs/smart_ptr/index.htm">Smart Pointers Library</a> - cast functions are now
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<a href="libs/dynamic_bitset/dynamic_bitset.html">Dynamic Bitset</a> added - A
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<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>
<p>November 30, 2001 - Version 1.26.0</p>
<ul>
<li>
<a href="libs/math/doc/common_factor.html">Common Factor Library</a>
added. Greatest common divisor and least common multiple, from Daryle Walker.
<li>
<a href="libs/preprocessor/doc/index.html">Preprocessor Library</a>
added. Preprocessor metaprogramming tools including repetition and recursion,
from Vesa Karvonen.
<li>
<a href="libs/utility/iterator_adaptors.htm">Iterator Adaptor Library</a>:
Added <a href="libs/utility/generator_iterator.htm">generator iterator</a>
adaptor, from Jens Maurer.
<li>
<a href="libs/random/index.html">Random Number Library</a>: Removed
iterator interface. Fixed overflows in uniform_int&lt;&gt;. Both changes cause
random number sequences to differ compared to previous boost releases.
<li>
<a href="libs/utility/operators.htm">operators.hpp</a>: Improvements from
Daryle and Helmut Ziesel
<li>
<a href="tools/build/index.html">Boost.Build:</a> Continuing improvements,
including pre-built <a href="tools/build/index.html#Jam">Boost.Jam executables</a>.
<li>
Minor fixes to a number of other libraries.</li>
</ul>
</td>
</tr>
</table>
</td>
</tr>
</table>
<hr>
<p>Revised
<!--webbot bot="Timestamp" S-Type="EDITED" S-Format="%d %B, %Y" startspan -->
04 February, 2003<!--webbot bot="Timestamp" endspan i-checksum="40404" --></p>
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