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

[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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Re: [boost] Official JSON Package
by John Venarchick 01 May '15

01 May '15

> > ---------- Forwarded message ---------- > From: Michael Ainsworth <michael(a)michaelainsworth.id.au> > To: "boost(a)lists.boost.org" <boost(a)lists.boost.org> > Cc: > Date: Fri, 1 May 2015 08:53:02 +1000 > Subject: [boost] Official JSON Package > 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 About two years ago when there was talk of a GSOC 2013 project for JSON, I posted that I had been working on changes to ptree so that you could have a ptree<string, boost::any> and be able to round trip successfully. At the time no one seemed interested. I think I should be able to recreate what I had done to make it work for you if your use case is DOM centric like Bjorn Reese's post indicates is one of the draw backs of using ptree. -John Venarchick

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[ANN] "Die Boost C++ Bibliotheken", 2nd edition available (German edition)
by Boris Schäling 01 May '15

01 May '15

Just a quick announcement: The 2nd edition of my book "Die Boost C++ Bibliotheken" (German edition) is available. - It introduces 72 Boost libraries. - It contains more than 430 examples. - The print version has 600 pages. - There is also a Kindle, Epub and PDF version. - It's also online: <http://dieboostcppbibliotheken.de/> There is hardly any difference between the German and the English language edition. The German language edition is a bit more up-to-date after the English language edition has been published in September last year. But there is no need to read the book again in case you read the English language edition already. For those who don't know German: The English language edition remains available online at <http://theboostcpplibraries.com/>. Boris

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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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