boost/index.htm
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<h1><img id="boost-logo" src="more/boost-dark-trans.png" alt=
"Boost C++ Libraries" width="237" height="55" name=
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<p id="heading-quote"><span class="quote">&ldquo;...one of the
most highly regarded and expertly designed C++ library projects
in the world.&rdquo;</span> <span class="attribution">&mdash;
<a href="http://www.gotw.ca/">Herb Sutter</a> and <a href=
"http://en.wikipedia.org/wiki/Andrei_Alexandrescu">Andrei
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Standards</a></span></p>
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<div class="section" id="intro">
<h1>Welcome to Boost.org!</h1>
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<p>Boost provides free peer-reviewed portable C++
source libraries.</p>
<p>We emphasize libraries that work well with the C++
Standard Library. Boost libraries are intended to be
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both commercial and non-commercial use.</p>
<p>We aim to establish &quot;existing practice&quot; and
provide reference implementations so that Boost
libraries are suitable for eventual standardization.
Ten Boost libraries are already included in the
<a href="http://www.open-std.org/jtc1/sc22/wg21">C++
Standards Committee's</a> Library Technical Report (
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"http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1745.pdf">
TR1</a>) as a step toward becoming part of a future
C++ Standard. More Boost libraries are proposed for
the upcoming <a href=
"http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1810.html">
TR2</a>.</p>
<p class="note"><span class="note-label">Getting
started:</span> <span class="note-body">Boost works
on almost any modern operating system, including UNIX
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<p>Although Boost was begun by members of the C++
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<h2>Latest News</h2>
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<h3>???, 2006 - Version 1.34.0</h3>
<h4>New Libraries</h4>
<ul>
<li><span class="library"><a href=
"doc/html/foreach.html">Foreach Library</a>:</span>
<tt>BOOST_FOREACH</tt> macro for easily iterating
over the elements of a sequence, from Eric
Niebler.</li>
<li><span class="library"><a href=
"libs/statechart/doc/index.html">Statechart
Library</a>:</span> Arbitrarily complex finite state
machines can be implemented in easily readable and
maintainable C++ code, from Andreas Huber.</li>
<li><span class="library"><a href=
"libs/tr1/index.html">TR1 Library</a>:</span> An
implementation of the C++ Technical Report on
Standard Library Extensions, from John Maddock.
This library does not itself implement the TR1
components, rather it's a thin wrapper that will
include your standard library's TR1 implementation
(if it has one), otherwise it will include the
Boost Library equivalents, and import them into
namespace <code>std::tr1</code>. Highlights
include: Reference Wrappers, Smart Pointers,
result_of, Function Object Binders, Polymorphic
function wrappers, Type Traits, Random Number
Generators and Distributions, Tuples, Fixed Size
Array, Hash Function Objects, Regular Expressions,
and Complex Number Additional Algorithms.</li>
<li><span class="library"><a href=
"doc/html/typeof.html">Typeof
Library</a>:</span> Typeof operator emulation,
from Arkadiy Vertleyb and Peder Holt.</li>
<li><span class="library"><a href=
"doc/html/xpressive.html">Xpressive
Library</a>:</span> Regular expressions that can be
written as strings or as expression templates, and
that can refer to each other and themselves
recursively with the power of context-free
grammars, from Eric Niebler.</li>
</ul>
<h4>Updated Libraries</h4>
<ul>
<li>
<span class="library"><a href=
"libs/assign/index.html">Assign
Library</a>:</span>
<ul>
<li>Support for
<code>ptr_map&lt;key,T&gt;</code> via the new
function <code>ptr_map_insert()</code></li>
<li>Support for initialization of <a href=
"libs/ptr_container/index.html">Pointer
Containers</a> when the containers hold
pointers to an abstract base class.</li>
</ul>
</li>
<li>
<span class="library"><a href=
"libs/filesystem/doc/index.htm">Filesystem
Library</a>:</span> Major upgrade in preparation
for submission to the C++ Standards Committee for
TR2. Changes include:
<ul>
<li><a href=
"libs/filesystem/doc/i18n.html#Internationalization">
Internationalization</a>, provided by class
templates <i>basic_path</i>,
<i>basic_filesystem_error</i>,
<i>basic_directory_iterator</i>, and
<i>basic_directory_entry</i>.</li>
<li><a href=
"libs/filesystem/doc/i18n.html#Simplification">Simplification</a>
of the path interface by eliminating special
constructors to identify native formats.</li>
<li><a href=
"libs/filesystem/doc/i18n.html#Rationalization">
Rationalization</a> of predicate function
design, including the addition of several new
functions.</li>
<li>Clearer specification by reference to
<a href=
"libs/filesystem/doc/design.htm#POSIX-01">POSIX</a>,
the ISO/IEEE Single Unix Standard, with
provisions for Windows and other operating
systems.</li>
<li><a href=
"libs/filesystem/doc/i18n.html#Preservation">Preservation</a>
of existing user code whenever possible.</li>
<li><a href=
"libs/filesystem/doc/i18n.html#More_efficient">More
efficient</a> directory iteration.</li>
<li>Addition of a <a href=
"libs/filesystem/doc/tr2_proposal.html#Class-template-basic_recursive_directory_iterator">
recursive directory iterator</a>.</li>
</ul>
</li>
<li><span class="library"><a href=
"libs/function/index.html">Function
Library</a>:</span> Boost.Function now implements a
small buffer optimization, which can drastically
improve the performance when copying or
constructing Boost.Function objects storing small
function objects. For instance,
<code>bind(&amp;X:foo, &amp;x, _1, _2)</code>
requires no heap allocation when placed into a
Boost.Function object.</li>
<li>
<span class="library"><a href=
"libs/functional/hash/index.html">Functional/Hash
Library</a></span>
<ul>
<li>Use declarations for standard classes, so
that the library doesn't need to include all of
their headers</li>
<li>Deprecated the
<tt>&lt;boost/functional/hash/*.hpp&gt;</tt>
headers.</li>
<li>Add support for the
<tt>BOOST_HASH_NO_EXTENSIONS</tt> macro, which
disables the extensions to TR1</li>
<li>Minor improvements to the hash functions
for floating point numbers.</li>
</ul>
</li>
<li>
<span class="library"><a href=
"libs/graph/doc/index.html">Graph
Library</a>:</span>
<ul>
<li><a href=
"libs/graph/doc/maximum_matching.html"><tt>edmonds_maximum_cardinality_matching</tt></a>,
from Aaron Windsor.</li>
<li><a href=
"libs/graph/doc/lengauer_tarjan_dominator_tree.htm">
<tt>lengauer_tarjan_dominator_tree</tt></a>,
from JongSoo Park.</li>
<li><a href=
"libs/graph/doc/compressed_sparse_row.html"><tt>
compressed_sparse_row_graph</tt></a>, from
Jeremiah Willcock and Douglas Gregor of Indiana
University.</li>
<li><a href=
"libs/graph/doc/sorted_erdos_renyi_generator.html"><tt>sorted_erdos_renyi_iterator</tt></a>,
from Jeremiah Willcock of Indiana
University.</li>
<li><a href=
"libs/graph/doc/biconnected_components.html"><tt>
biconnected_components</tt></a> now supports a
visitor and named parameters, from Janusz
Piwowarski.</li>
<li><a href=
"libs/graph/doc/adjacency_matrix.html"><tt>adjacency_matrix</tt></a>
now models the <a href=
"libs/graph/doc/BidirectionalGraph.html">Bidirectional
Graph</a> concept.</li>
<li><a href=
"libs/graph/doc/dijkstra_shortest_paths.html"><tt>
dijkstra_shortest_paths</tt></a> now calls
<tt>vis.initialize_vertex</tt> for each vertex
during initialization.</li>
<li>See the <a href=
"libs/graph/doc/history.html#1.34.0">complete
revision history</a> for more information.</li>
</ul>
</li>
<li><span class="library"><a href=
"libs/multi_array/index.html">MultiArray
Library</a>:</span> Boost.MultiArray now by default
provides range-checking for
<code>operator[]</code>. Range checking can be
disabled by defining the macro
<code>BOOST_DISABLE_ASSERTS</code> before including
<tt>multi_array.hpp</tt>. A bug in
<code>multi_array::resize()</code> related
to storage orders was fixed.</li>
<li>
<span class="library"><a href=
"libs/multi_index/doc/index.html">Multi-index
Containers Library</a>:</span>
<ul>
<li>New <a href=
"libs/multi_index/doc/tutorial/indices.html#rnd_indices">
random access indices</a>.</li>
<li>Non key-based indices feature new <a href=
"libs/multi_index/doc/tutorial/indices.html#rearrange">
rearrange facilities</a>.</li>
<li>This version also includes a number of
optimizations and usage improvements. For a
complete list of changes, see the library
<a href=
"libs/multi_index/doc/release_notes.html#boost_1_34">
release notes</a>.</li>
</ul>
</li>
<li>
<span class="library"><a href=
"libs/parameter/index.html">Parameter
Library</a>:</span>
<ul>
<li>Every ArgumentPack is now a valid <a href=
"libs/mpl/doc/refmanual/forward-sequence.html">MPL
Forward Sequence.</a></li>
<li>Support for unnamed arguments (those whose
keyword is deduced from their types) is
added.</li>
<li>Support for named and unnamed template
arguments is added.</li>
<li>New overload generation macros solve the
<a href=
"http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2002/n1385.htm">
forwarding problem</a> directly.</li>
<li>See also the Python library changes,
below.</li>
</ul>
</li>
<li>
<span class="library"><a href=
"libs/ptr_container/index.html">Pointer Container
Library</a>:</span>
<ul>
<li>Support for serialization via <a href=
"libs/serialization/index.html">Boost.Serialization.</a></li>
<li>Exceptions can be disabled by defining the
macro BOOST_PTR_CONTAINER_NO_EXCEPTIONS before
including any header. This macro is defined by
default if BOOST_NO_EXCEPTIONS is defined.</li>
<li>Additional
<code>std::auto_ptr&lt;T&gt;</code> overloads
added s.t. one can also pass
<code>std::auto_ptr&lt;T&gt;</code> instead of
only <code>T*</code> arguments to member
functions.</li>
<li><code>transfer()</code> now has weaker
requirements s.t. one can transfer objects from
<code>ptr_container&lt;Derived&gt;</code> to
<code>ptr_container&lt;Base&gt;</code>,</li>
</ul>
</li>
<li>
<span class="library"><a href=
"libs/python/index.html">Python
Library</a>:</span>
<ul>
<li>Boost.Python now automatically appends C++
signatures to docstrings. The new <a href=
"libs/python/doc/v2/docstring_options.html"><code>
docstring_options.hpp</code></a> header is
available to control the content of
docstrings.</li>
<li><a href=
"libs/python/doc/v2/stl_iterator.html#stl_input_iterator-spec">
<code>stl_input_iterator</code></a>, for
turning a Python iterable object into an STL
input iterator, from Eric Niebler.</li>
<li>Support for <code>void*</code> conversions
is added.</li>
<li>Integrated support for wrapping C++
functions built with the parameter library;
keyword names are automatically known to
docsstrings.</li>
</ul>
</li>
<li><span class="library"><a href=
"../doc/html/signals.html">Signals Library</a>:</span>
More improvements to signal invocation performance from
Robert Zeh.</li>
<li>
<span class="library"><a href=
"libs/smart_ptr/smart_ptr.htm">Smart
Pointers Library</a>:</span>
<ul>
<li><a href=
"libs/smart_ptr/shared_ptr.htm#allocator_constructor">
Allocator support</a> as proposed in <a href=
"http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2005/n1851.pdf">
N1851</a> (162 Kb PDF).</li>
<li><a href=
"libs/smart_ptr/pointer_cast.html">
<code>pointer_cast</code></a> and <a href=
"libs/smart_ptr/pointer_to_other.html">
<code>pointer_to_other</code></a> utilities to
allow pointer-independent code, from Ion
Gaztanaga.</li>
</ul>
</li>
<li>
<span class="library"><a href="libs/algorithm/string/index.html">
String Algorithm Library</a>:<span>
<ul>
<li><code>lexicographical_compare</code></li>
<li><code>join</code></li>
<li>
New comparison predicates <code>is_less</code>, <code>is_not_greater</code>.
</li>
<li>
Negative indexes support (like Perl) in various algorihtms
(<code>*_head/tail</code>, <code>*_nth</code>).
</li>
</ul>
<li>
<span class="library"><a href=
"libs/wave/index.html">Wave
Library</a>:</span>
<ul>
<li>Wave now correctly recognizes pp-number
tokens as mandated by the C++ Standard, which
are converted to C++ tokens right before they
are returned from the library.</li>
<li>Several new preprocessing hooks have been
added. For a complete description please refer
to the related documentation page: <a href=
"libs/wave/doc/class_reference_ctxpolicy.html">The
Context Policy</a>.</li>
<li>Shared library (dll) support has been added
for the generated Wave libraries.</li>
<li>The overall error handling has been
improved. It is now possible to recover and
continue after an error or a warning was
issued.</li>
<li>Support for optional comment and/or full
whitespace preservation in the generated output
stream has been added.</li>
<li>The Wave library now performs automatic
include guard detection to avoid accessing header
files more than once, if appropriate. </li>
<li>Full interactive mode has been added to the Wave
tool. Now the Wave tool can be used just like Python
or Perl for instance to interactively try out your
BOOST_PP macros. Additionally it is now possible to
load and save the current state of an interactive session
(macro tables et.al.).</li>
<li>The overall performance has been improved by upto
40-60%, depending on the concrete files to process. </li>
<li>Support for new pragmas has been added allowing to
control certain library features from inside the
preprocessed sources (partial output redirection,
control of generated whitespace and #line directives).</li>
<li>Optional support for #pragma message &quot;...&quot;
has been added. </li>
<li>This version also includes a number of bug
fixes and usage improvements. For a complete
list of changes, see the libraries <a href=
"libs/wave/ChangeLog">change log</a>.</li>
</ul>
</li>
</ul>
</div>
</div>
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