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Fwd: [Boost-users] condensed overview of boost
by Joachim Faulhaber 23 May '11

23 May '11

---------- Forwarded message ---------- From: Joachim Faulhaber <afojgo(a)googlemail.com> Date: 2011/5/23 Subject: Re: [boost][Boost-users] condensed overview of boost To: boost(a)lists.org, boost-users(a)lists.boost.org Hi Olaf, Hallo Dresden, 2011/5/12 Olaf Krzikalla <olaf.krzikalla(a)tu-dresden.de>: > Hi @boost, > > recently I've given some lectures about some selected boost libraries. Thank you for teaching boost! (boo to the community for not answering for so long ;) > After > that the audience expressed the wish to get an overview over all current > boost libraries. Thus for my next lecture I sat down and digged through the > complete 1.46 for several day. I found a lot of useful stuff, but I also > found a lot of obsolete, superseded, replaced or will-be-superseded stuff. > Some libraries seems to be sub-libs of other libs. Is there an overview of > inner lib relations and the actual lib state wrt. to the overall > development? There is an overview on the boost web-site www.boost.org of course in an synoptic quality with short descriptions of each library. As far as I know there is no single documentation on inter library relationships that is maintained, correct me if I'm wrong. Generated dependency graphs were provided by Chrisoph Heindl in December 2008. http://lists.boost.org/Archives/boost/2008/12/146290.php http://picasaweb.google.com/christoph.heindl/BoostDependencies1370 for boost-1.37 but not updated later. > The issues I've found so far: > > - Compatibility: very narrow. Is it still needed as a public lib? > - Functional, MemFun: superseded by Bind > - Call Traits, Functional/Forward, Lambda: will be superseded by C++0x > - Interval: can this become a sub-lib of ICL? boost::numeric::interval is closed interval on numeric types with a focus on interval arithmetic. It is also suitable handle numeric precision problems AFAIK, but I'm not an expert for that. In contrast ICL has a focus on the set character of intervals and their composition in interval containers. Non numeric intervals are possible as long as there is an ordering on the domain_type. I think it is unfortunate that ICL and numeric::interval do not interplay well. One of the main obstacle are the fixed closed borders of numeric::intervals, that lead to problems when adding or subtracting intervals to and from interval containers. There were discussions on this on the list but the authors of numeric::interval seemed not to be active at the time. Since numeric::intervals serve numeric purposes and icl::interval serve more general pusposes I think they can coexist happiely. As long a numeric::interval is not actively maintained, I don't think there is a chanche for change. > - Meta State Machine / Statechart: whats the actual difference? I.e. Meta State Machine is a library that generates finite state machines completely at compile-time from meta code. MSN is more expensive at compile time but may generate even faster code than a "traditional" FSM. Maybe Christophe can comment on this. > which problem is solved by one lib but not by the other? > - Fusion & Tuple: how are these related? Could boost::tuple become a > typedef to boost::fusion::vector. > > I know that most of these relations are there for historical reasons and > won't be changed. However I wish it had been documented somewhere. That > would make an in-depth introduction of boost a lot easier. There is no ready made structure or institution within boost for this. But definitely there are people who have similar thoughts, concerns and intentions. It depends if someone is going to contribute and/or is taking the lead for an effort like this. As mentioned above Chrisoph Heindl provided generated dependency graphs. Boris Schäling wrote an online book http://www.highscore.de/cpp/boost/index.html that has been translated by others. Paul Bristow cares on documentation quality for the math stuff. Robert Ramey, Dean Berris and others had initiatives about redesigning the boost web-site, just to mention a few things. So your effort on creating an overview and document on inter library relationships could be an own contribution and other could join in. Thanks again, Joachim -- Interval Container Library [Boost.Icl] http://www.joachim-faulhaber.de

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[ICL] interval_map::find(const domain_type_comparable&) instead of interval_map::find(const domain_type&)
by Denis 23 May '11

23 May '11

Hi Joachim One small note about Icl maps. I think would be useful to make interval_map::find()'s function accept any type comparable to map's key. For example, the key type is std::string and the user want to search using a 0-terminated string or a string defined as arbitrary pointer and a length. Then the user will have to allocate the temporary string only to pass it to interval_map::find() You may argue that the std::map works same way. But there is the difference. If I want to do the trick above, I can use boost::multi_index or at least instead of std::map<std::string, ValueT> I can define something like std::map<tuple<const char*, size_t>, tuple<std::string, ValueT>> with key's const char* and size_t pointing to the data hosted in value. This is not possible with interval_map, where the values can be joined

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BoostCon video mirror
by Jeroen Habraken 23 May '11

23 May '11

Hi, After becoming annoyed with blip.tv I've created a mirror of the BoostCon videos with the help of Nikhef (http://www.nikhef.nl/en/) It can be found at http://wipkip.nikhef.nl/events/BoostCon/2010/ and there's a quick overview over at http://vexocide.org/boostcon.html. If desired we'll gladly host the 2011 videos as well. Regards, Jeroen Habraken

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[process] boostcon code now on github
by Jeff Flinn 22 May '11

22 May '11

The source code as presented at the boostcon "Boost Process" session is now available at: https://github.com/JeffFlinn/boost-process Let me know if there are any problems accessing this as I'm a github newbie. Thanks, Jeff

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[btree] Status report
by Beman Dawes 22 May '11

22 May '11

The slides for my BoostCon "Proposed Boost B-tree Library" presentation are available: http://github.com/boostcon/2011_presentations/raw/master/tue/proposed_b_tre… Please be aware that while the library is progressing nicely, it isn't ready for production use: * There are outstanding bugs, particularly with variable length data. * Names and signatures may still change. * Documentation is barely started. * Build is failing on Mac OS X. That probably won't get fixed until after BoostCon. (Reported by Marshall Clow) That said, the response to the presentation was very positive and I'm actively continuing development. Anyone interested in the library is encouraged to take a look and give it a try. See http://github.com/Beman/Boost-Btree/blob/master/README for install instructions. Feedback welcome! Thanks, --Beman

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Invitation to connect on LinkedIn
by Илья Биин via LinkedIn 21 May '11

21 May '11

LinkedIn ------------Илья Биин requested to add you as a connection on LinkedIn: ------------------------------------------ Yuriy, I'd like to add you to my professional network on LinkedIn. - Илья Accept invitation from Илья Биин http://www.linkedin.com/e/bv6hcz-gnyytzl3-3y/uV9CsZkavY-uKU5A7C-1JbkavY-u5P… View invitation from Илья Биин http://www.linkedin.com/e/bv6hcz-gnyytzl3-3y/uV9CsZkavY-uKU5A7C-1JbkavY-u5P… ------------------------------------------ DID YOU KNOW that LinkedIn can find the answers to your most difficult questions? Post those vexing questions on LinkedIn Answers to tap into the knowledge of the world's foremost business experts: http://www.linkedin.com/e/bv6hcz-gnyytzl3-3y/ask/inv-23/ -- (c) 2011, LinkedIn Corporation

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Invitation to connect on LinkedIn
by Serge Blazhievsky 21 May '11

21 May '11

LinkedIn ------------ I'd like to add you to my professional network on LinkedIn. - Serge Serge Blazhievsky Staff Software Engineer at LiveOps San Francisco Bay Area Confirm that you know Serge Blazhievsky https://www.linkedin.com/e/bv6hcz-gny8eb0s-6p/isd/2953122588/yo_3A_ww/ -- (c) 2011, LinkedIn Corporation

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Boost statechart viewer
by Petr Šilhavík 20 May '11

20 May '11

Dear Boost-Statechart developers and users, I would like to ask you to try the tool that I am developing in my bachelor thesis and give me your opinion about it. The tool is able to visualize state machines that use Boost-Statechart library. It uses Clang and LLVM *(version 2.9)* for producing the output files that can be visualized using dot. Now it can work with states (not the orthogonal states), transitions and custom reactions. You can find more information about it on the web page of this project where you can also download the source codes and see some examples of the output pictures. http://rtime.felk.cvut.cz/statechart-viewer/ I am looking forward to your answers. Best regards Petr Silhavik

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[Unicode] Library info
by Mathias Gaunard 20 May '11

20 May '11

Just a remainder for people that followed my Unicode presentation at Boostcon: Library is available on the Boost Sandbox: <https://svn.boost.org/svn/boost/sandbox/SOC/2009/unicode> Documentation is available here: <http://mathias.gaunard.com/unicode/doc/html/>

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How to inspect state of boost::mt19937?
by Matthew Gwynne 20 May '11

20 May '11

Hi, Does anyone know how I can access the internal state of the Mersenne twister (boost::mt19937) easily? That is the 623 state bytes. I am looking to initialise a random number generator and then inspect the state to compare it to another system which apparently implements MT19937 but gives different results. If someone could point me in the right direction, that would be great! Thanks! Matthew Gwynne http://cs.swan.ac.uk/~csmg/

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