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Shortest path feasibility code
by paul 19 Nov '08

19 Nov '08

Hi, Is there any public domain code that implements shortest path feasibility or negative cycle detection? Thanks, Paul

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Cross platform library for reading/writing configuration files?
by Jeff Dunlap 19 Nov '08

19 Nov '08

I've used Windows specific functions for reading/writing configuration (INI) files in my application and would like to know if there is a cross platform library available that is recommended. I searched the boost libs for something and there are libs of course that can achieve this with some programming, but I'd like to know if there is something (boost or other library) with specific functionality to handle reading/writing INI files. Example: [General] Language=Français [Strings] String00001=Version String00002=Etes vous sûr ? String00003=Voulez-vous continuer ? Thank you very much

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Re: [Boost-users] [iostreams?] Working with files larger than
by Ioannis Mademlis 18 Nov '08

18 Nov '08

Raindog wrote: > To my surprise, the implementation of the STL shipped with VC9 does not > support files larger than 4GB. I was pretty surprised and couldn't find > anything on the web to the contrary. So I was wondering if boost has any > hidden libraries that might assist in solving my problem. > > Thanks. If you are interested in manipulating really big files maybe you will find the hdf5 library handy. http://www.hdfgroup.org/HDF5/ For a short introduction http://www.hdfgroup.org/HDF5/doc/TechNotes/BigDataSmMach.html Cheers Ioannis

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Writing dicom images
by David J. Paribello 18 Nov '08

18 Nov '08

Hello, I am new to Boost. I work in the medical imaging field and am looking for a set of functions and/or libraries in c++ that can be used to write raw (pixel) data to dicom images. I am also fairly new to c++ as well as dicom images. Is there a separate dicom header library? I have implemented much of what I need to do in Matlab using dicomwrite and want to mimic that function in c++. Does something similar to that exist? Thanks David ------------------------------- David Paribello - B. Eng., M. Eng. Robarts Research Institute Imaging Research Laboratories

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[iostreams?] Working with files larger than 4gb.
by Raindog 18 Nov '08

18 Nov '08

To my surprise, the implementation of the STL shipped with VC9 does not support files larger than 4GB. I was pretty surprised and couldn't find anything on the web to the contrary. So I was wondering if boost has any hidden libraries that might assist in solving my problem. Thanks.

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[asio]Can I call socket.close() in different thread?
by Wang Yun 18 Nov '08

18 Nov '08

Hi I use a thread pool to run one io_service instance, after a socket connected to a server, I want to call _socket.close() to close it. But I don't know how to do this in thread safe way. In the document, socket class is "Shared objects: Unsafe", becase I use thread pool, so I don't know which thread will call close on the socket. What should I do? Thanks, Wang Yun

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[BGL] boost::detail::error_property_not_found issue
by M. Siebeneicher 18 Nov '08

18 Nov '08

Hi boost users, at first some pieces of code: class EdgeProperties { public: cPose m_pose; PosePrecision m_precisionPose; }; class VertexContainer { public: VertexID m_idVertex; //!< ID of the container VertexID m_idParent; //!< ID of the parent container unsigned int m_nDepth; //!< Depth of vertex in the tree }; typedef adjacency_list< vecS , vecS , bidirectionalS , VertexContainer , EdgeProperties > BGLGraph; void traverse(BGLGraph& graphIn, const IDMapper& idMapperIn) { // Get the index map typedef property_map<BGLGraph, VertexID VertexContainer::*>::type IndexMap; IndexMap im = get(&VertexContainer::m_idVertex, graphIn); // The source vertex BGLVertexDescriptor startDescriptor; idMapperIn.mapIDs(this->getStartID(), startDescriptor); std::vector<BGLVertexDescriptor> p(num_vertices(graphIn)); p[get(im, startDescriptor)] = startDescriptor; //p[startDescriptor] = startDescriptor; breadth_first_search( graphIn , startDescriptor , vertex_index_map(im).visitor(make_bfs_visitor(record_predecessors(&p[0], boost::on_tree_edge()))) ); . . . } Compiling my whole code that contains the above one gives me the following error/warning: ----------------------------------------------------------------------------------------------------------- ph_visitor_t,boost::bgl_named_params<IndexMap,boost::vertex_index_t,boost::no_property>::self>,boost::graph_visitor_t>::type>::result<boost::bfs_visitor<>>::type ] d:\FAS_SIM\SDKs\boost_1_35_0\boost\graph\breadth_first_search.hpp(256): Siehe Verweis auf Instanziierung der kompilierten Funktionsvorlage 'void boost::detail::bfs_dispatch<boost::detail::error_property_not_found>::apply<VertexListGraph,boost::bfs_visitor<Visitors>,boost::graph_visitor_t,boost::bgl_named_params<T,Tag,Base>::self>(VertexListGraph &,boost::graph_traits<G>::vertex_descriptor,const boost::bgl_named_params<boost::bfs_visitor<Visitors>,boost::graph_visitor_t,boost::bgl_named_params<T,Tag,Base>::self> &,boost::detail::error_property_not_found)' with [ VertexListGraph=de::audi::scenetree::BGLGraph, Visitors=boost::predecessor_recorder<std::allocator<std::_Vbase>::value_type *__w64 ,boost::on_tree_edge>, T=IndexMap, Tag=boost::vertex_index_t, Base=boost::no_property, G=de::audi::scenetree::BGLGraph ] d:\Sources\SceneTreeLib\test_src\de\audi\scenetree\visitor\DepthTestVisitor.cpp(48): Siehe Verweis auf Instanziierung der kompilierten Funktionsvorlage 'void boost::breadth_first_search<de::audi::scenetree::BGLGraph,boost::bfs_visitor<Visitors>,boost::graph_visitor_t,boost::bgl_named_params<T,Tag,Base>::self>(const VertexListGraph &,boost::graph_traits<G>::vertex_descriptor,const boost::bgl_named_params<boost::bfs_visitor<Visitors>,boost::graph_visitor_t,boost::bgl_named_params<T,Tag,Base>::self> &)' with [ Visitors=boost::predecessor_recorder<std::allocator<std::_Vbase>::value_type *__w64 ,boost::on_tree_edge>, T=IndexMap, Tag=boost::vertex_index_t, Base=boost::no_property, VertexListGraph=de::audi::scenetree::BGLGraph, G=de::audi::scenetree::BGLGraph ] ----------------------------------------------------------------------------------------------------------- Does anybody know what this means? greetz, Manuel -- Der GMX SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen! Ideal für Modem und ISDN: http://www.gmx.net/de/go/smartsurfer

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Building sandbox library (chrono)
by Niklas Angare 18 Nov '08

18 Nov '08

I can't figure out how to build chrono. Here's what I did: svn co http://svn.boost.org/svn/boost/trunk boost svn co -N http://svn.boost.org/svn/boost/sandbox boost-sandbox svn co http://svn.boost.org/svn/boost/sandbox/chrono boost-sandbox/chrono cd boost ./configure cd ../boost-sandbox/chrono/libs/chrono/test ../../../../../boost/tools/jam/src/bin.qnxntox86/bjam I get: error: Could not find parent for project at '../../../..' error: Did not find Jamfile.jam or Jamroot.jam in any parent directory. I have no clue how to create a Jamroot.jam if that's what I need to do. -- Regards Niklas Angare

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vsprints in boost
by Simon Pickles 18 Nov '08

18 Nov '08

A simple question... Does boost offer a version of vsprintf? Simon

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Re: [Boost-users] Speed up bjam
by Simon Pickles 18 Nov '08

18 Nov '08

Is there a quicker alternative? Trouble is I've only just got to grips with jam files! ------------------------------------------------------------------------ Seconded. I once tried using bjam to build on an even slower machine, and never tried it again. > > ------------------------------------------------------------------------ > > Subject: > Speed up bjam > From: > Simon Pickles <sipickles(a)hotmail.com> > Date: > Tue, 18 Nov 2008 13:35:03 +0000 > To: > boost-users(a)lists.boost.org > > To: > boost-users(a)lists.boost.org > > > Hi, > > Is there any way to make bjam only scan files for changes in the > current working directory, rather than the whole boost installation? I > hoped this would speed up the bjam build process. Everytime I do a > build I get, for example: > > ...patience... > ...patience... > ...found 2982 targets... > ...updating 6 targets... > > Wouldn't be quicker if it wasn't checking 3000 files each build? its a > very slow machine you see! 900 MHZ! > > Thanks > > Simon >

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