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

Official JSON Package
by Michael Ainsworth 01 May '15

01 May '15

Is there an official Boost package for reading and writing JSON data? I know of JSON Spirit, but this is not (to my knowledge) official. I also know the Boost.PropertyTree works, but doesnot have full support. Michael

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[date_time] default constructor for period?
by Scott Bailey 01 May '15

01 May '15

I would like to use this: std::deque<boost::posix_time::time_period> But std::deque depends on (as does some of my other code) it's type having a default constructor. I'm surprised it does not already exists. An implementation that seems to work for me is trivial, although I'm not sure it will work for everyone? My changes to 'boost/date_time_time_period.hpp' follow. I have guarded them with DATE_TIME_NO_DEFAULT_CONSTRUCTOR and simply set begin to point_type() and end to begin_ -1; Is this a change worth an eventual release? Thanks, SB --- a/period.hpp 2015-04-29 15:13:28.040930833 -0700 +++ b/period.hpp 2015-04-29 15:15:01.201392793 -0700 @@ -57,6 +57,9 @@ typedef point_rep point_type; typedef duration_rep duration_type; +#if !defined(DATE_TIME_NO_DEFAULT_CONSTRUCTOR) + period(); +#endif // DATE_TIME_NO_DEFAULT_CONSTRUCTOR period(point_rep first_point, point_rep end_point); period(point_rep first_point, duration_rep len); point_rep begin() const; @@ -82,6 +85,16 @@ point_rep last_; }; +#if !defined(DATE_TIME_NO_DEFAULT_CONSTRUCTOR) + //! default constructor + template<class point_rep, class duration_rep> + inline + period<point_rep,duration_rep>::period() : + begin_(point_type()), + last_(begin_ - duration_rep::unit()) + {} +#endif // DATE_TIME_NO_DEFAULT_CONSTRUCTOR + //! create a period from begin to last eg: [begin,end) /*! If end <= begin then the period will be invalid */ -- Scott Bailey

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[property_tree] Co-Maintainer Needed
by Sebastian Redl 01 May '15

01 May '15

H List, It pains me to say that I can't find sufficient time to maintain PropertyTree the way I should. Bugfixes are delayed, regressions appear, and the long-needed documentation improvement is going nowhere. I made a commitment last C++Now to add C++11 support and document the way I did it in order to help other Boost developers, and failed to do so. New features, like proper encoding support or type-preserving JSON parsing simply aren't happening. It's clear that I can't do it alone. So I am looking for help, someone else who cares about the library and can help me with bugfixes and future development. This could be an individual, a group of people, or the community maintenance team, but I definitely need someone if PropertyTree is supposed to continue as a useful part of Boost. Anyone interested or know somebody who would be interested, please let me know. Sebastian

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[CrystaX.NET][multi_index][release] Segfaults with Clang 3.5 on Android
by Joaquin M Lopez Munoz 01 May '15

01 May '15

Hi, Android CrystaX.NET-* testers are segfaulting on some (~65%) of the Boost.MultiIndex tests after successful build. For instance: http://tinyurl.com/jwnfryy The curious thing is that this is Clang 3.5 only, only for some tests and the same tests across the different Android variants. I'd like to help fixing whatever it's required (if anything) in the lib so as to make this work, but the existing info does not provide any clue. Maybe the regression tester maintainer can shed some more light here? Thank you, Joaquín M López Muñoz Telefónica

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[1.58.0] Release candidates available
by Marshall Clow 01 May '15

01 May '15

Release candidate files for 1.58.0 are available at: http://boost.cowic.de/rc/ As always, the release managers would appreciate it if you download the candidate of your choice and give building it a try. Please report both success and failure, and anything else that is noteworthy. This helps ensure the candidates build OK before we push them out to SourceForge. The files (and associated md5s) are: MD5 (boost_1_58_0_rc1.7z) = 609ea035fd3b9f1da110f640c9b8d1e6 MD5 (boost_1_58_0_rc1.tar.bz2) = 7edf680e2532a0370bce64e8e847d661 MD5 (boost_1_58_0_rc1.tar.gz) = 0e435db6a5963e58ffa8d7df49ab5846 MD5 (boost_1_58_0_rc1.zip) = a8d1761306a2ea020e92de53a5cae82d Thanks! -- The release managers P.S. Release notes are here: http://www.boost.org/users/history/version_1_58_0.html

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[1.58.0] Adding Oracle Solaris Studio 12.4 to the list of tested compilers
by Aparna Kumta 01 May '15

01 May '15

One of our primary goals has been to get Oracle Solaris Studio C++ compiler listed on the boost website. With this mind, we have been testing the Boost Nightly regression tests for few months now. For the past month have been submitting the results on http://www.boost.org/development/tests/develop/developer/summary.html (look for the SunOS tab). Could the Oracle Solaris Studio C++ compiler be added to the boost website under 'COMPILERS TESTED' section at http://www.boost.org/users/history/version_1_58_0.html ? Thanks, Aparna

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[githelp] Moving from push to pull requests
by Fletcher, John P 30 Apr '15

30 Apr '15

I have been working for some time on boost phoenix using git push origin develop to push my changes. I have now been asked to change to use pull requests and I am not clear about how to get into the new setup. My current setup on my local computer has phoenix as a subproject in a complete boost clone with branches develop, master and several other branches. I have not created any branches on the remote repository. What I want is to have a repository where I can work and then send pull requests for things to go to the main develop. I have two ideas about how this could be done. (1) create a separate repository outside the modular structure and put a copy of phoenix there. I have created an empty structure called phoenix_changes both on my local computer and under my user name on github. I am puzzled as to how to get the correct content into it. This could come from my local copy or from the main repository. (2) Should I instead create a new branch in both my local and the remote copies of boost/phoenix? If so how do I do that? Can I branch from the current develop as the starting point? In either case I want to be able to send pull requests to the other developers. It would be helpful to have an example of the commands needed. Please ask me for more information if this is not clear. Thank you for the [githelp] resource. John

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[Boost] Windows 10 Building/Testing
by Kyle Ketterer 30 Apr '15

30 Apr '15

Hey all, I was just curious if any devs/users have tried to compile/build on any of the Windows 10 preview releases and if there is a plan to support moving forward. I have been using Boost in various projects for 4-5 years and I am actually interested in getting involved in this project somehow. What is the most appropriate way to become involved? I really appreciate the skill level here and if anything would love the learning experience (learning from the best). Thanks

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[gsoc15] This year's GSoC students
by Niall Douglas 29 Apr '15

29 Apr '15

Dear Boost, It is our pleasure to announce this year's winning GSoC students and projects: 1. Damian Vicino Topic: Safe Float (boost::safe_numerics<float>) Mentor: Robert Ramey 2. Rajaditya Mukherjee Topic: Boost uBLAS EigenSolver Mentor: David Bellot 3. Anurag Ghosh Topic: Boost Document Library Mentor: Antony Polukhin 4. Nikhar Agrawal Topic: Boost.Fixed-Point Mentor: Paul A. Bristow 5. Benedek Thaler Topic: Enhanced vector and deque containers Mentor: Thorsten Ottosen 6. Louis Dionne Topic: Improved compile-time associative data structures for Hana Mentor: Joel Falcou 7. Jakub Szuppe Topic: Improving Boost.Compute Mentor: Kyle Lutz Congratulations to these students for passing an exceptionally tough contest this year, and our thanks to the above mentors for making themselves available. Finally, thank you Google for another year of funding and to those open source orgs who released duplicate students to us, we appreciate it! Niall and Boris --- Boost C++ Libraries Google Summer of Code 2015 admin https://svn.boost.org/trac/boost/wiki/SoC2015

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Updated library_status for easier use..
by Rene Rivera 29 Apr '15

29 Apr '15

Following up on the reorganization of the regression tools.. I'm happy to say that part of the changes I pushed last night include a cleaned up and easier to use library_status tool. Key changes, from the older version and the one Robert forked, are: * Processing the jam log (i.e. process_jam_log) is integrated into it. * Running b2 to build/run tests is also integrated into it (optionally). Which means that there's no external support script(s) needed and that it's fully cross-platform single executable. Documentation is updated at < https://rawgit.com/boostorg/regression/develop/index.html> on how to build it and on using it at < https://rawgit.com/boostorg/regression/develop/library_status/doc/library_s… >. Obviously improvements from others welcome (as PRs). HTH -- -- Rene Rivera -- Grafik - Don't Assume Anything -- Robot Dreams - http://robot-dreams.net -- rrivera/acm.org (msn) - grafikrobot/aim,yahoo,skype,efnet,gmail

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