March 2015 - Boost - lists.preview.boost.org

Bug in boost asio on mac
by Philippe Daouadi 23 Mar '15

23 Mar '15

Hi, I have had this bug on mac os Yosemite where I would call async_connect and my code would never be called back. I didn't have any answer to my bug report and I would like to be sure that it it is not lost. https://svn.boost.org/trac/boost/ticket/11070 Any suggestion or workaround is welcome. Cheers, Philippe -- *This email and any attachment thereto are confidential and intended solely for the use of the individual or entity to whom they are addressed.If you are not the intended recipient, please be advised that disclosing, copying, distributing or taking any action in reliance on the contents of this email is strictly prohibited. In such case, please immediately advise the sender, and delete all copies and attachment from your system.This email shall not be construed and is not tantamount to an offer, an acceptance of offer, or an agreement by Aldebaran Robotics on any discussion or contractual document whatsoever. No employee or agent is authorized to represent or bind Aldebaran Robotics to third parties by email, or act on behalf of Aldebaran Robotics by email, without express written confirmation by Aldebaran Robotics’ duly authorized representatives.* ------------------------------ *Ce message électronique et éventuelles pièces jointes sont confidentiels, et exclusivement destinés à la personne ou l'entité à qui ils sont adressés.* *Si vous n'êtes pas le destinataire visé, vous êtes prié de ne pas divulguer, copier, distribuer ou prendre toute décision sur la foi de ce message électronique. Merci d'en aviser immédiatement l'expéditeur et de supprimer toutes les copies et éventuelles pièces jointes de votre système.* *Ce message électronique n'équivaut pas à une offre, à une acceptation d’offre, ou à un accord d'Aldebaran Robotics sur toute discussion ou document contractuel quel qu’il soit, et ne peut être interprété comme tel. Aucun employé ou agent d’Aldebaran Robotics n'est autorisé à représenter ou à engager la société par email, ou à agir au nom et pour le compte de la société par email, sans qu’une confirmation écrite soit donnée par le représentant légal d’Aldebaran Robotics ou par toute autre personne ayant reçu délégation de pouvoir appropriée.*

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Multiple-pattern string search algorithms
by meghana madhyastha 23 Mar '15

23 Mar '15

Hi all ! I noticed that Boost's algorithm module does not include multiple pattern string searching algorithms such as the Rabin Karp algorithm and Aho-Corasick algorithm. I think these algorithms are very useful and should be implemented in the library. If no one is currently working on them, I am willing to implement them. Please let me know your opinion. Regards, Meghana

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Enhanced Vector and Deque Competency Test
by Islam Taha 23 Mar '15

23 Mar '15

Hi all I’m sorry with inconvenience with my last mail, it’s just my first to write in a mail list. I’ve fixed some issues with my code but now it may run completely, I would be thankful if anyone has some free time to give a feedback to my fixed code and tell me if any issues. code https://github.com/islam-taha/stdVector/blob/master/vector.cpp <https://github.com/islam-taha/stdVector/blob/master/vector.cpp> . thanks in advance Islam

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transforming ex. boost lib into C++11-only lib?
by Oliver Kowalke 23 Mar '15

23 Mar '15

Hello, is it permitted to transform an existing boost library into a C++11-only library? best, Oliver

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[endian] Testing floating point interoperability
by Beman Dawes 23 Mar '15

23 Mar '15

On Fri, Jan 30, 2015 at 5:25 AM, Paul A. Bristow <pbristow(a)hetp.u-net.com> wrote: > > >> * Anything else that you can think of to improve FP support. > > The proof of the pudding is in the eating. > > I'd suggest that *testing interoperability* is the key precaution that you should advise. I'm starting to write a caution to go in the release, and will make that point. A new test, "floating_point_test", has been added to the endian test suite. It will focus on interoperability. (I know that you are talking about users testing their application needs, but I want to test Boost.Endian to be able to warn users of areas where there are known issues.) > It should obviously be between all possible combinations of processor hardware types. It isn't just processor types. std::numeric_limits<float>::signaling_NaN() representation is 0x7fc00001 for Microsoft/Dinkumware, but is 0x7fa00000 for gcc and clang:-( > The test should include a range of floating-point values from min to max, > and include NaN and infinity unless it is certain that they will never occur. To get started, floating_point_test.cpp is testing float and double: numeric_limits<>::min() numeric_limits<>::max() numeric_limits<>::lowest() numeric_limits<>::epsilon() numeric_limits<>::round_error() numeric_limits<>::infinity() -numeric_limits<>::infinity() numeric_limits<>::quiet_NaN() numeric_limits<>::denorm_min() 0.0 -0.0 1.0 -1.0 native uint32_t 0x12345678U as a float native uint64_t 0x0123456789abcdefULL as a double pi<>() Are there other specific values worth testing?> (Unless very special precautions are taken, then infinity and NaN are like to rear their ugly heads > at some time - probably when you least want to see them!) > > It must be possible to 'round-trip' all floating-point values. That's one of the tests performed on each value. > You can't test all possible values (except for 32-bit float - 64-bit double takes about 50 years at > current processor speeds ;-) > but you can chose values (floating-point bit patterns) at random for a test lasting some minutes or > even hours. Could you provide the random number generation and otherwise help with this? I've only ever used integer RNGs. Thanks, --Beman

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GSoC project
by Lulu C. Li 23 Mar '15

23 Mar '15

Hi! I wish to participate in GSoC this summer and I am very interested in Boost, in particular concurrent hash tables project. I am familiar with STL and worked on synchronization problems and concurrent processes in C. I can work on all the functionalities mentioned. What are other features that I should know for this project and proposal? Lulu

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Test Runner: teeks99-08f - msvc-14.0 - Extra Define
by Tom Kent 23 Mar '15

23 Mar '15

The Test runner teeks99-08f has been running the msvc-14.0 - CTP 6 release for a bit now. It runs with the extra bjam option "define=BOOST_MSVC_ENABLE_2014_JUN_CTP". Is this still necessary? I was going through and updating some settings and I notices this was still there and was trying to decide if I should clean it up or not. Thanks, Tom

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How to install a algorithm to Boost
by jianwei li 23 Mar '15

23 Mar '15

Hi Now,I have implemented a linear algorithm.How can i install it to Boost project. Jianwei Li

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Application for GSOC 2015
by Alexandru Hulea 23 Mar '15

23 Mar '15

Hello, My name is Alexandru Hulea and I am an undergraduate student at University POLITEHNICA of Bucharest. I am in the third year at The Faculty of Automatic Control and Computers. My email can be found at [1]. About availability, I think 40 hours / week will be enough, but I will work more if the complexity of the project will require that. The only factors which will affect my availability will be the exams which are scheduled in the first 2 weeks of June. About my educational background, I took some courses related to the projects I apply including C Programming, Data Structures, OOP, Algorithms, Parallel and Distributed Algorithms. I participated in 2 summer schools working on a project in Android and on another project in OpenGL with C++. My favourite programming language is C++. I have 3 years experience in C/C++ and I am interested in scientific work like developing libraries of C++. I like to solve algorithms exercises, to find tricky optimisations for ACM exercises or other programming contests and recently I discover the wonderful world of parallel computing. I am interested in contributing to the Boost C++ Libraries because the project contains the parts of programming I like the most: optimisation and parallel programming. I have experience in C++ 98/03, 11/14, Standard Library and I worked with Git. Unfortunately I have no experience with Boost C++ Libraries. I like to work in Visual Studio on Windows and with Sublime Text and gcc, valgrind in Ubuntu. I am familiar only with JavaDoc speaking of software documentation. About the projects, I find interesting: "Concurrent Hash Tables", "Enhanced vector and deque containers" and "Boost uBLAS a library for matrix computations". I see these projects as optimisation and syncronization problems. My biggest projects are an OpenGL game written in C++ and a client-server application written in C++ too as a homework for the Protocols course. You can find them at [2]. About the application on the projects, could you tell me how I can show my skills in this field ? I searched for a section with a projects or some tests with bugs but I didn't find it. I look forward to hearing from you soon. Thank you, Alexandru Hulea [1]: alexandru.hulea(a)gmail.com [2]: https://github.com/HuleaAlexandru/c-Projects

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[GSoC] [Hana] Project proposal
by Louis Dionne 22 Mar '15

22 Mar '15

Dear Boost, I plan to participate to GSoC this summer with Hana as a project. Joel Falcou, my mentor of last year, kindly agreed to mentor me again this year if I make the cut. This year's project will be much more specific than last year's. Loosely speaking, the goal is to research compile-time associative data structures and to come up with a solution that's both compile-time efficient and which has a flexible interface. You can find the current version of my GSoC proposal at [1]. Please do not hesitate to make comments if you think some things can be improved, which is probably the case. I think my colllaboration with Boost was fruitful last year, and I really hope I can reiterate this year. Regards, Louis Dionne [1]: https://gist.github.com/ldionne/171e6301ecde63712d8a

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