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Thanks to everyone for all the work on 1.55.0
by Marshall Clow 11 Nov '13

11 Nov '13

I just wanted to take off my "release manager" hat and say, personally, thank you to all the people who tried out the RCs/Betas/etc, reported bugs, and suggested fixes. You were all a big help in making the release. -- Marshall Marshall Clow Idio Software <mailto:mclow.lists@gmail.com> A.D. 1517: Martin Luther nails his 95 Theses to the church door and is promptly moderated down to (-1, Flamebait). -- Yu Suzuki

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Boost 1.55.0 released!
by Marshall Clow 11 Nov '13

11 Nov '13

Release 1.55.0 of the Boost C++ Libraries is now available. These open-source libraries work well with the C++ Standard Library, and are usable across a broad spectrum of applications. The Boost license encourages both commercial and non-commercial use. This release contains one new library and numerous enhancements and bug fixes for existing libraries. === New Libraries === • Predef: This library defines a set of compiler, architecture, operating system, library, and other version numbers … [View More]

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[Polygon] attaching data to polygon boundary segments
by Andreas Buhr 10 Nov '13

10 Nov '13

Dear Boost community, I would like to process 2D geometry for a finite element solver using boost.polygon. I programmed it, it's working fine. I use the polygon_data and polygon_set_data types from boost.polygon. Now I would like to attach information to the boundary segments. Then I'd like to do boolean operations. At the end I would like to have the boundary information merged. Is this possible with boost.polygon? A attached a little drawing of what behavior I would like to achieve, colors … [View More]

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[BGL] how to use write_graphviz_dp with graph bundle properties
by Pablo Madoery 10 Nov '13

10 Nov '13

Hello. I know how to use write_graphviz_dp with vertices and edges bundle properties but i can't figure out how to print the graph_bundle property of a graph. i have the following code where the line with the error is commented: #include <boost/graph/properties.hpp> #include <boost/graph/graphviz.hpp> #include <boost/graph/adjacency_list.hpp> using namespace boost; using namespace std; struct VertexInfo { int id; }; struct EdgeInfo { int weight; }; struct … [View More]

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[Boost.Python] Exposing protected virtual member functions
by Vitaly Budovski 09 Nov '13

09 Nov '13

Hi, I'd like to expose some protected virtual member functions to Python, but I've been unable to find a practical way to do so. I've created a wrapper making the protected functions public, but have not been able to make further progress due to either compile errors or Python runtime exceptions. Is there something I've overlooked in the documentation? Please see code below. Thanks, Vitaly #include <boost/python.hpp> #include <string> using namespace boost::python; class base … [View More]

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Converting Timestamp into hex of 8 bytes
by Rahul Mathur 09 Nov '13

09 Nov '13

Sorry for wrong post. I have a string Timestamp of 1383889129 which on ONLINE conversion from string to hex gives a 10 bytes as "31 33 38 33 38 38 39 31 32 39". But, the need is to have the TIMEStamp in 8 bytes only. OR any other way using either C++ or Boost where I can convert the string Timestamp of 1383889129 into 8 bytes hex value. Any clue ..!!

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Handling JSON with Boost
by Jauhien Piatlicki 07 Nov '13

07 Nov '13

Hi all, I'm interested whether there exists a library for working with JSON in Boost that preserves data types? I know about property_tree, but if I read a valid JSON with it and then write it out it results in all fields being strings. This is because property_tree internally does not distinguish different value types. But I need something that can read e.g. {"number":42} get access to it and write it then in the same form. Thanks for answering, regards, Jauhien

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Boost API System or Library Calls ..
by Rahul Mathur 06 Nov '13

06 Nov '13

Out of curiosity, wish to know if BOOST ASIO calls like - boost::asio::read() boost::asio::transfer_all() boost::asio::write() BOOST LEXICAL calls like - boost::lexical_cast<std::string>() BOOST POSIX TIME calls like - boost::posix_time::microsec_clock::universal_time() boost::posix_time::microsec_clock::ptime() are LIBRARY or SYSTEM calls. How to know which calls of BOOST are SYSTEM and LIBRARY calls? Thanks.

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Safe to pass dereferenced anonymous shared_ptr?
by Chris Stankevitz 06 Nov '13

06 Nov '13

Q1: Is the below code dangerous? A1: Only if the anonymous shared_ptr is deleted before function f returns. Q2: Is the anonymous shared_ptr deleted before function f returns? A2: ? Thank you, Chris === #include <iostream> #include <boost/make_shared.hpp> void f(const int& i) { std::cout << "i = " << i << std::endl; } int main() { f(*boost::make_shared<int>(42)); return 0; }

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[Containter] Compilation errors with 1.55 and VC2013
by Szymon Gatner 05 Nov '13

05 Nov '13

Hi, I am getting compilation errors with Container library after trying to build with Visual Studio 2013 and Boost 1.55 RC: Error 1 error C2228: left of '.select_on_container_copy_construction' must have class/struct/union c:\devel\boost_1_55_0\boost\intrusive\detail\has_member_function_callable_with.hpp 200 1 ConsoleApplication2 Minimalistic example to reproduce: #include <boost/signals2/connection.hpp> #include <boost/container/slist.hpp> #include <boost/container/vector.… [View More]

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