accumulators accumulators 1.36.0 Accumulators Eric Niebler Framework for incremental calculation, and collection of statistical accumulators. libs/accumulators/ Math algorithm algorithm 1.50.0 Algorithm Marshall Clow A collection of useful generic algorithms. libs/algorithm/ Algorithms algorithm/minmax algorithm 1.32.0 Min-Max Hervé Brönnimann Standard library extensions for simultaneous min/max and min/max element computations. libs/algorithm/minmax/ Algorithms algorithm/string algorithm 1.32.0 String Algo Pavol Droba String algorithms library. libs/algorithm/string/ Algorithms String any any 1.23.0 Any Kevlin Henney Safe, generic container for single values of different value types. libs/any/ Data array array 1.17.0 Array Nicolai Josuttis STL compliant container wrapper for arrays of constant size. libs/array/ tr1 Containers asio asio 1.35.0 Asio Chris Kohlhoff Portable networking, including sockets, timers, hostname resolution and socket iostreams. libs/asio/ Concurrent IO assert assert 1.27.0 develop Assert Peter Dimov Peter Dimov <pdimov -at- pdimov.com> Customizable assert macros. libs/assert/ Correctness assign assign 1.32.0 Assign Thorsten Ottosen Filling containers with constant or generated data has never been easier. libs/assign/ IO atomic atomic 1.53.0 Atomic Helge Bahmann, Tim Blechmann C++11-style atomic<>. libs/atomic/ Concurrent bimap bimap 1.35.0 Bimap Matias Capeletto Bidirectional maps library for C++. With Boost.Bimap you can create associative containers in which both types can be used as key. libs/bimap/ Containers Data bind bind 1.25.0 Bind Peter Dimov boost::bind is a generalization of the standard functions std::bind1st and std::bind2nd. It supports arbitrary function objects, functions, function pointers, and member function pointers, and is able to bind any argument to a specific value or route input arguments into arbitrary positions. libs/bind/ tr1 Function-objects bind/mem_fn bind 1.25.0 Member Function Peter Dimov Generalized binders for function/object/pointers and member functions. libs/bind/mem_fn.html tr1 Function-objects bind/ref bind 1.25.0 Ref Jaako Järvi, Peter Dimov, Doug Gregor, and Dave Abrahams A utility library for passing references to generic functions. libs/bind/ref.html tr1 Function-objects chrono chrono 1.47.0 Chrono Vicente J. Botet Escribá Useful time utilities. libs/chrono/ Domain System circular_buffer circular_buffer 1.35.0 Circular Buffer Jan Gaspar A STL compliant container also known as ring or cyclic buffer. libs/circular_buffer/ Containers compatibility compatibility 1.21.2 Compatibility Ralf Grosse-Kunstleve and Jens Maurer Help for non-conforming standard libraries. libs/compatibility/ workarounds concept_check concept_check 1.19.0 Concept Check Jeremy Siek Tools for generic programming. libs/concept_check/ Correctness Generic config config 1.9.0 Config Helps Boost library developers adapt to compiler idiosyncrasies; not intended for library users. libs/config/config.htm workarounds container container 1.48.0 Container Ion Gaztañaga Standard library containers and extensions. libs/container/ Containers Data context context 1.51.0 Context Oliver Kowalke Context switching library. libs/context/ Concurrent System conversion conversion 1.20.0 Conversion Dave Abrahams and Kevlin Henney Polymorphic and lexical casts. libs/conversion/ Miscellaneous String coroutine coroutine 1.53.0 Coroutine Oliver Kowalke Coroutine library. libs/coroutine/ Concurrent crc crc 1.22.0 CRC Daryle Walker The Boost CRC Library provides two implementations of CRC (cyclic redundancy code) computation objects and two implementations of CRC computation functions. The implementations are template-based. libs/crc/ Domain date_time date_time 1.29.0 Date Time Jeff Garland A set of date-time libraries based on generic programming concepts. libs/date_time/ Domain System dynamic_bitset dynamic_bitset 1.29.0 Dynamic Bitset Jeremy Siek and Chuck Allison The dynamic_bitset class represents a set of bits. It provides accesses to the value of individual bits via an operator[] and provides all of the bitwise operators that one can apply to builtin integers, such as operator& and operator<<. The number of bits in the set is specified at runtime via a parameter to the constructor of the dynamic_bitset. libs/dynamic_bitset/dynamic_bitset.html Containers exception exception 1.36.0 Exception Emil Dotchevski The Boost Exception library supports transporting of arbitrary data in exception objects, and transporting of exceptions between threads. libs/exception/doc/boost-exception.html Emulation filesystem filesystem 1.30.0 Filesystem Beman Dawes The Boost Filesystem Library provides portable facilities to query and manipulate paths, files, and directories. libs/filesystem/ System flyweight flyweight 1.38.0 Flyweight Joaquín M López Muñoz Design pattern to manage large quantities of highly redundant objects. libs/flyweight/ Patterns foreach foreach 1.34.0 Foreach Eric Niebler In C++, writing a loop that iterates over a sequence is tedious. We can either use iterators, which requires a considerable amount of boiler-plate, or we can use the std::for_each() algorithm and move our loop body into a predicate, which requires no less boiler-plate and forces us to move our logic far from where it will be used. In contrast, some other languages, like Perl, provide a dedicated "foreach" construct that automates this process. BOOST_FOREACH is just such a construct for C++. It iterates over sequences for us, freeing us from having to deal directly with iterators or write predicates. libs/foreach/ Algorithms Emulation format format 1.29.0 Format Samuel Krempp The format library provides a class for formatting arguments according to a format-string, as does printf, but with two major differences: format sends the arguments to an internal stream, and so is entirely type-safe and naturally supports all user-defined types; the ellipsis (...) can not be used correctly in the strongly typed context of format, and thus the function call with arbitrary arguments is replaced by successive calls to an argument feeding operator%. libs/format/ IO String function function 1.23.0 Function Doug Gregor Function object wrappers for deferred calls or callbacks. libs/function/ tr1 Function-objects Programming function_types function_types 1.35.0 Function Types Tobias Schwinger Boost.FunctionTypes provides functionality to classify, decompose and synthesize function, function pointer, function reference and pointer to member types. libs/function_types/ Generic Metaprogramming functional functional 1.16.0 Functional Mark Rodgers The Boost.Function library contains a family of class templates that are function object wrappers. libs/functional/ Function-objects functional functional 1.16.0 develop Functional Mark Rodgers The Boost.Function library contains a family of class templates that are function object wrappers. libs/functional/ Function-objects functional/factory functional 1.43.0 Functional/Factory Tobias Schwinger Function object templates for dynamic and static object creation libs/functional/factory/ Function-objects functional/factory functional 1.43.0 develop Functional/Factory Tobias Schwinger Tobias Schwinger <tschwinger -at- isonews2.com> Function object templates for dynamic and static object creation libs/functional/factory/ Function-objects functional/forward functional 1.43.0 Functional/Forward Tobias Schwinger Adapters to allow generic function objects to accept arbitrary arguments libs/functional/forward/ Function-objects functional/forward functional 1.43.0 develop Functional/Forward Tobias Schwinger Tobias Schwinger <tschwinger -at- isonews2.com> Adapters to allow generic function objects to accept arbitrary arguments libs/functional/forward/ Function-objects functional/hash functional 1.33.0 Functional/Hash Daniel James A TR1 hash function object that can be extended to hash user defined types. libs/functional/hash/ tr1 Function-objects functional/hash functional 1.33.0 develop Functional/Hash Daniel James Daniel James <dnljms -at- gmail.com> A TR1 hash function object that can be extended to hash user defined types. libs/functional/hash/ tr1 Function-objects functional/overloaded_function functional 1.50.0 Functional/Overloaded Function Lorenzo Caminiti Overload different functions into a single function object. libs/functional/overloaded_function/ Function-objects functional/overloaded_function functional 1.50.0 develop Functional/Overloaded Function Lorenzo Caminiti Lorenzo Caminiti <lorcaminiti -at- gmail.com> Overload different functions into a single function object. libs/functional/overloaded_function/ Function-objects fusion fusion 1.35.0 Fusion Joel de Guzman, Dan Marsden and Tobias Schwinger Library for working with tuples, including various containers, algorithms, etc. libs/fusion/doc/html/ Data Metaprogramming geometry geometry 1.47.0 Geometry Barend Gehrels, Bruno Lalande and Mateusz Loskot Geometry Library. libs/geometry/ Algorithms Math geometry geometry 1.47.0 1.54.0 Geometry Barend Gehrels, Bruno Lalande, Mateusz Loskot and Adam Wulkiewicz Geometry Library. libs/geometry/ Algorithms Math gil gil 1.35.0 GIL Lubomir Bourdev and Hailin Jin Generic Image Library libs/gil/ Algorithms Containers Generic Image-processing Iterators graph graph 1.18.0 Graph Jeremy Siek and a University of Notre Dame team; now maintained by Andrew Sutton and Jeremiah Willcock. The BGL graph interface and graph components are generic, in the same sense as the the Standard Template Library (STL). libs/graph/ Algorithms Containers Iterators heap heap 1.49.0 Heap Tim Blechmann Priority queue data structures. libs/heap/ Data icl icl 1.46.0 ICL Joachim Faulhaber Interval Container Library, interval sets and maps and aggregation of associated values libs/icl/ Containers Data integer integer 1.9.0 Integer The organization of boost integer headers and classes is designed to take advantage of <stdint.h> types from the 1999 C standard without resorting to undefined behavior in terms of the 1998 C++ standard. The header <boost/cstdint.hpp> makes the standard integer types safely available in namespace boost without placing any names in namespace std. libs/integer/ Math interprocess interprocess 1.35.0 Interprocess Ion Gaztañaga Shared memory, memory mapped files, process-shared mutexes, condition variables, containers and allocators. libs/interprocess/ Concurrent intrusive intrusive 1.35.0 Intrusive Ion Gaztañaga Intrusive containers and algorithms. libs/intrusive/ Containers io io 1.28.0 IO State Savers Daryle Walker The I/O sub-library of Boost helps segregate the large number of Boost headers. This sub-library should contain various items to use with/for the standard I/O library. libs/io/doc/ios_state.html IO iostreams iostreams 1.33.0 Iostreams Jonathan Turkanis Boost.IOStreams provides a framework for defining streams, stream buffers and i/o filters. libs/iostreams/ IO String iterator iterator 1.21.0 Iterator Dave Abrahams, Jeremy Siek, and Thomas Witt The Boost Iterator Library contains two parts. The first is a system of concepts which extend the C++ standard iterator requirements. The second is a framework of components for building iterators based on these extended concepts and includes several useful iterator adaptors. libs/iterator/ Iterators lambda lambda 1.28.0 Lambda Jaakko Järvi and Gary Powell Define small unnamed function objects at the actual call site, and more. libs/lambda/ Function-objects lexical_cast conversion 1.20.0 Lexical Cast Kevlin Henney General literal text conversions, such as an int represented a string, or vice-versa, from Kevlin Henney. libs/conversion/lexical_cast.htm Miscellaneous String local_function local_function 1.50.0 Local Function Lorenzo Caminiti Program functions locally, within other functions, directly within the scope where they are needed. libs/local_function/ Function-objects locale locale 1.48.0 Locale Artyom Beilis Provide localization and Unicode handling tools for C++. libs/locale/ String lockfree lockfree 1.53.0 Lockfree Tim Blechmann Lockfree data structures. libs/lockfree/ Concurrent log log 1.54.0 Log Andrey Semashev Logging library. libs/log/ Miscellaneous logic/tribool logic 1.32.0 Tribool Doug Gregor 3-state boolean type library. doc/html/tribool.html Miscellaneous math math 1.23.0 Math various Boost.Math includes several contributions in the domain of mathematics: The Greatest Common Divisor and Least Common Multiple library provides run-time and compile-time evaluation of the greatest common divisor (GCD) or least common multiple (LCM) of two integers. The Special Functions library currently provides eight templated special functions, in namespace boost. The Complex Number Inverse Trigonometric Functions are the inverses of trigonometric functions currently present in the C++ standard. Quaternions are a relative of complex numbers often used to parameterise rotations in three dimentional space. Octonions, like quaternions, are a relative of complex numbers. libs/math/ Math math/common_factor math 1.26.0 Math Common Factor Daryle Walker Greatest common divisor and least common multiple. libs/math/doc/common_factor.html Math math/common_factor math 1.26.0 1.54.0 Math Common Factor Daryle Walker Greatest common divisor and least common multiple. libs/math/doc/html/gcd_lcm.html Math math/octonion math 1.23.0 Math Octonion Hubert Holin Octonions. libs/math/doc/octonion/html/ Math math/octonion math 1.23.0 1.54.0 Math Octonion Hubert Holin Octonions. libs/math/doc/html/octonions.html Math math/quaternion math 1.23.0 Math Quaternion Hubert Holin Quaternions. libs/math/doc/quaternion/html/ Math math/quaternion math 1.23.0 1.54.0 Math Quaternion Hubert Holin Quaternions. libs/math/doc/html/quaternions.html Math math/special_functions math 1.35.0 Math/Special Functions John Maddock, Paul Bristow, Hubert Holin and Xiaogang Zhang A wide selection of mathematical special functions. libs/math/doc/sf_and_dist/html/ Math math/special_functions math 1.35.0 1.54.0 Math/Special Functions John Maddock, Paul Bristow, Hubert Holin and Xiaogang Zhang A wide selection of mathematical special functions. libs/math/doc/html/special.html Math math/statistical_distributions math 1.35.0 Math/Statistical Distributions John Maddock and Paul Bristow A wide selection of univariate statistical distributions and functions that operate on them. libs/math/doc/sf_and_dist/html/ Math math/statistical_distributions math 1.35.0 1.54.0 Math/Statistical Distributions John Maddock and Paul Bristow A wide selection of univariate statistical distributions and functions that operate on them. libs/math/doc/html/dist.html Math move move 1.48.0 Move Ion Gaztañaga Portable move semantics for C++03 and C++11 compilers. libs/move/ Emulation mpi mpi 1.35.0 MPI Douglas Gregor and Matthias Troyer Message Passing Interface library, for use in distributed-memory parallel application programming. libs/mpi/ Concurrent mpl mpl 1.30.0 MPL Aleksey Gurtovoy The Boost.MPL library is a general-purpose, high-level C++ template metaprogramming framework of compile-time algorithms, sequences and metafunctions. It provides a conceptual foundation and an extensive set of powerful and coherent tools that make doing explict metaprogramming in C++ as easy and enjoyable as possible within the current language. libs/mpl/ Metaprogramming msm msm 1.44.0 Meta State Machine Christophe Henry A very high-performance library for expressive UML2 finite state machines. libs/msm/ State multi_array multi_array 1.29.0 Multi-Array Ron Garcia Boost.MultiArray provides a generic N-dimensional array concept definition and common implementations of that interface. libs/multi_array/ Containers Math multi_index multi_index 1.32.0 Multi-Index Joaquín M López Muñoz The Boost Multi-index Containers Library provides a class template named multi_index_container which enables the construction of containers maintaining one or more indices with different sorting and access semantics. libs/multi_index/ Containers Data multiprecision multiprecision 1.53.0 Multiprecision John Maddock and Christopher Kormanyos Extended precision arithmetic types for floating point, integer andrational arithmetic. libs/multiprecision/ Math numeric/conversion numeric 1.32.0 Numeric Conversion Fernando Cacciola Optimized Policy-based Numeric Conversions. libs/numeric/conversion/ Math Miscellaneous numeric/interval numeric 1.30.0 Interval Guillaume Melquiond, Hervé Brönnimann and Sylvain Pion Extends the usual arithmetic functions to mathematical intervals. libs/numeric/interval/doc/interval.htm Math numeric/odeint numeric 1.53.0 Odeint Karsten Ahnert and Mario Mulansky Solving ordinary differential equations. libs/numeric/odeint/ Math numeric/ublas numeric 1.29.0 uBLAS Joerg Walter and Mathias Koch uBLAS provides matrix and vector classes as well as basic linear algebra routines. Several dense, packed and sparse storage schemes are supported. libs/numeric/ublas/doc/index.htm Math optional optional 1.30.0 Optional Fernando Cacciola Discriminated-union wrapper for optional values. libs/optional/ Miscellaneous parameter parameter 1.33.0 Parameter David Abrahams and Daniel Wallin Boost.Parameter Library - Write functions that accept arguments by name. libs/parameter/ Emulation Programming phoenix phoenix 1.47.0 Phoenix Joel de Guzman, Dan Marsden and Thomas Heller Define small unnamed function objects at the actual call site, and more. libs/phoenix/ Function-objects polygon polygon 1.44.0 Polygon Lucanus Simonson Booleans/clipping, resizing/offsetting and more for planar polygons with integral coordinates. libs/polygon/ Miscellaneous polygon polygon 1.44.0 1.54.0 Polygon Lucanus Simonson, Andrii Sydorchuk Voronoi diagram construction and booleans/clipping, resizing/offsetting and more for planar polygons with integral coordinates. libs/polygon/ Algorithms Data Math pool pool 1.21.0 Pool Steve Cleary Memory pool management. libs/pool/ Memory predef predef 1.55.0 Predef Rene Rivera This library defines a set of compiler, architecture, operating system, library, and other version numbers from the information it can gather of C, C++, Objective C, and Objective C++ predefined macros or those defined in generally available headers. libs/predef/ Miscellaneous preprocessor preprocessor 1.26.0 Preprocessor Vesa Karvonen and Paul Mensonides Preprocessor metaprogramming tools including repetition and recursion. libs/preprocessor/ Preprocessor program_options program_options 1.32.0 Program Options Vladimir Prus The program_options library allows program developers to obtain program options, that is (name, value) pairs from the user, via conventional methods such as command line and config file. libs/program_options/ IO Miscellaneous property_map property_map 1.19.0 Property Map Jeremy Siek Concepts defining interfaces which map key objects to value objects. libs/property_map/ Containers Generic property_tree property_tree 1.41.0 Property Tree Marcin Kalicinski and Sebastian Redl A tree data structure especially suited to storing configuration data. libs/property_tree/ Containers Data proto proto 1.37.0 Proto Eric Niebler Expression template library and compiler construction toolkit for domain-specific embedded languages. libs/proto/ Metaprogramming ptr_container ptr_container 1.33.0 Pointer Container Thorsten Ottosen Containers for storing heap-allocated polymorphic objects to ease OO-programming. libs/ptr_container/ Containers Data python python 1.19.0 Python Dave Abrahams The Boost Python Library is a framework for interfacing Python and C++. It allows you to quickly and seamlessly expose C++ classes functions and objects to Python, and vice-versa, using no special tools -- just your C++ compiler. libs/python/ Inter-language random random 1.15.0 Random Jens Maurer A complete system for random number generation. libs/random/ tr1 Math range range 1.32.0 Range Niel Groves, Thorsten Ottosen A new infrastructure for generic algorithms that builds on top of the new iterator concepts. libs/range/ Algorithms ratio ratio 1.47.0 Ratio Vicente J. Botet Escribá Compile time rational arithmetic. libs/ratio/ Math rational rational 1.11.0 Rational Paul Moore A rational number class. libs/rational/ Math regex regex 1.18.0 Regex John Maddock Regular expression library. libs/regex/ tr1 String scope_exit scope_exit 1.38.0 Scope Exit Alexander Nasonov Execute arbitrary code at scope exit. libs/scope_exit/ Emulation serialization serialization 1.32.0 Serialization Robert Ramey Serialization for persistence and marshalling. libs/serialization/ IO signals signals 1.29.0 Signals Doug Gregor Managed signals & slots callback implementation. libs/signals/ Function-objects Patterns signals signals 1.29.0 1.54.0 deprecated Signals Doug Gregor Managed signals & slots callback implementation. libs/signals/ Function-objects Patterns signals2 signals2 1.39.0 Signals2 Frank Mori Hess Managed signals & slots callback implementation (thread-safe version 2). libs/signals2/ Function-objects Patterns smart_ptr smart_ptr 1.23.0 Smart Ptr Greg Colvin, Beman Dawes, Peter Dimov, Darin Adler and Glen Fernandes Smart pointer class templates. libs/smart_ptr/smart_ptr.htm tr1 Memory spirit spirit 1.30.0 Spirit Joel de Guzman, Hartmut Kaiser, and Dan Nuffer LL parser framework represents parsers directly as EBNF grammars in inlined C++. libs/spirit/ Parsing String statechart statechart 1.34.0 Statechart Andreas Huber Dönni Boost.Statechart - Arbitrarily complex finite state machines can be implemented in easily readable and maintainable C++ code. libs/statechart/ State static_assert static_assert 1.19.0 Static Assert John Maddock Static assertions (compile time assertions). libs/static_assert/ Correctness Generic Metaprogramming system system 1.35.0 System Beman Dawes Operating system support, including the diagnostics support that will be part of the C++0x standard library. libs/system/ System test test 1.21.0 Test Gennadiy Rozental Support for simple program testing, full unit testing, and for program execution monitoring. libs/test/ Correctness thread thread 1.25.0 Thread Anthony Williams (originally William Kempf) Portable C++ multi-threading. libs/thread/ proposal Concurrent System thread thread 1.25.0 1.49.0 Thread Vicente J. Botet Escribá, Anthony Williams (originally William Kempf) Portable C++ multi-threading. libs/thread/ proposal Concurrent System timer timer 1.9.0 Timer Beman Dawes Event timer, progress timer, and progress display classes. libs/timer/ Miscellaneous tokenizer tokenizer 1.23.0 Tokenizer John Bandela Break of a string or other character sequence into a series of tokens. libs/tokenizer/ Iterators String tr1 tr1 1.34.0 TR1 John Maddock The TR1 library provides an implementation of the C++ Technical Report on Standard Library Extensions. 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 std::tr1. libs/tr1/ tr1 Miscellaneous tti tti 1.54.0 TTI Edward Diener Type Traits Introspection library. libs/tti/ Generic Metaprogramming tuple tuple 1.24.0 Tuple Jaakko Järvi Ease definition of functions returning multiple values, and more. libs/tuple/ tr1 Data type_erasure type_erasure 1.54.0 Type Erasure Steven Watanabe Runtime polymorphism based on concepts. libs/type_erasure/ Data type_traits type_traits 1.13.0 Type Traits John Maddock, Steve Cleary, et al Templates for fundamental properties of types. libs/type_traits/ tr1 Generic Metaprogramming typeof typeof 1.34.0 Typeof Arkadiy Vertleyb, Peder Holt Typeof operator emulation. libs/typeof/ Emulation units units 1.36.0 Units Matthias Schabel and Steven Watanabe Zero-overhead dimensional analysis and unit/quantity manipulation and conversion. libs/units/ Domain unordered unordered 1.36.0 Unordered Daniel James Unordered associative containers. libs/unordered/ tr1 Containers unordered unordered 1.36.0 develop Unordered Daniel James Daniel James <dnljms -at- gmail.com> Unordered associative containers. libs/unordered/ tr1 Containers utility utility 1.13.0 Utility Dave Abrahams and others Class noncopyable plus checked_delete(), checked_array_delete(), next(), prior() function templates, plus base-from-member idiom. libs/utility/utility.htm Algorithms Function-objects Memory Miscellaneous Patterns utility/call_traits utility 1.13.0 Call Traits John Maddock, Howard Hinnant, et al Defines types for passing parameters. libs/utility/call_traits.htm Generic utility/compressed_pair utility 1.13.0 Compressed Pair John Maddock, Howard Hinnant, et al Empty member optimization. libs/utility/compressed_pair.htm Data Patterns utility/enable_if utility 1.31.0 Enable If Jaakko Järvi, Jeremiah Willcock, and Andrew Lumsdaine Selective inclusion of function template overloads. libs/utility/enable_if.html Generic utility/identity_type utility 1.50.0 Identity Type Lorenzo Caminiti Wrap types within round parenthesis so they can always be passed as macro parameters. libs/utility/identity_type/ Preprocessor utility/in_place_factories utility 1.32.0 In Place Factory, Typed In Place Factory Fernando Cacciola Generic in-place construction of contained objects with a variadic argument-list. libs/utility/in_place_factories.html Generic utility/operators utility 1.9.0 Operators Dave Abrahams and Jeremy Siek Templates ease arithmetic classes and iterators. libs/utility/operators.htm Generic Iterators Math utility/result_of utility 1.32.0 Result Of Determines the type of a function call expression. libs/utility/utility.htm#result_of Function-objects utility/swap utility 1.38.0 Swap Joseph Gauterin Enhanced generic swap function. libs/utility/swap.html Miscellaneous utility/value_initialized utility 1.9.0 Value Initialized Fernando Cacciola Wrapper for uniform-syntax value initialization, based on the original idea of David Abrahams. libs/utility/value_init.htm Miscellaneous uuid uuid 1.42.0 Uuid Andy Tompkins A universally unique identifier. libs/uuid/ Data Domain variant variant 1.31.0 Variant Eric Friedman and Itay Maman Safe, generic, stack-based discriminated union container. libs/variant/ Containers Data wave wave 1.33.0 Wave Hartmut Kaiser The Boost.Wave library is a Standards conformant, and highly configurable implementation of the mandated C99/C++ preprocessor functionality packed behind an easy to use iterator interface. libs/wave/ String xpressive xpressive 1.34.0 Xpressive Eric Niebler Regular expressions that can be written as strings or as expression templates, and which can refer to each other and themselves recursively with the power of context-free grammars. libs/xpressive/ String