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[statechart] - passing data between states during state transission?
by Oliver.Kowalke＠infineon.com 10 Mar '06

10 Mar '06

Hello, I want to pass data from outside into the state machine and pass the data from one state to the next state during state transition. But it seams that statechart doesn't support this. Could this feature be added? What is the preferred way which statechart suggests? With best regards, Oliver #include <iostream> #include <stdexcept> #include <boost/statechart/custom_reaction.hpp> #include <boost/statechart/event.hpp> #include <boost/statechart/simple_state.hpp> #include <boost/statechart/state_machine.hpp> namespace sc = boost::statechart; struct ev_activate : public sc::event< ev_activate > { int data; ev_activate( int d) : data( d) {} }; struct inactive; struct sm : public sc::state_machine< sm, inactive > {}; struct active : public sc::simple_state< active, sm > { active( int i) { std::cout << "active(): " << i << std::endl; } }; struct inactive : public sc::simple_state< inactive, sm > { typedef sc::custom_reaction< ev_activate > reactions; sc::result react( ev_activate const& ev) { return transit< active >( ev.data); // passing data to new state during transition } }; int main() { try { sm fsm; fsm.initiate(); fsm.process_event( ev_activate( 1) ); // passing data from outside return 0; } catch ( std::runtime_error const& e) { std::cerr << e.what() << std::endl; } catch (...) { std::cerr << "unhandled exception" << std::endl; } return -1; }

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vertex property setting
by Camille Lemen 10 Mar '06

10 Mar '06

Hi all! I'm new at using boost and my request certainly is obvious but I can't manage to get the error... I am trying to set std::vector's type vertex properties in a graph. But it does not want te set a property to more than one edge. The program is the following: /****************************************code*****************************/ #include <vector> #include <iostream> #include <list> #include <map> //boost includes #include <boost/property_map.hpp> #include <boost/graph/graph_traits.hpp> #include <boost/graph/properties.hpp> #include <boost/graph/adjacency_list.hpp> #include <boost/graph/adjacency_matrix.hpp> using namespace std; enum edge_intersec_t { edge_intersec }; enum edge_dist_t { edge_dist }; enum vertex_param_t { vertex_param}; namespace boost { BOOST_INSTALL_PROPERTY(edge, intersec); BOOST_INSTALL_PROPERTY(edge, dist); BOOST_INSTALL_PROPERTY(vertex, param); } using namespace boost; typedef property<edge_intersec_t, unsigned int, property<edge_dist_t,float> > EdgeProp; typedef property<vertex_param_t,std::vector<float> > VertexProp; typedef adjacency_list<setS,vecS, bidirectionalS,VertexProp,EdgeProp> Graph; typedef graph_traits<Graph>::edge_descriptor edge_descriptor; int main(int argc, char** argv) { int NbRegions = 9; Graph g(NbRegions); edge_descriptor e; bool inserted; tie(e,inserted) = add_edge(vertex(0,g),vertex(1,g),EdgeProp(0,20),g); tie(e,inserted) = add_edge(vertex(0,g),vertex(2,g),0,g); tie(e,inserted) = add_edge(vertex(1,g),vertex(2,g),0,g); tie(e,inserted) = add_edge(vertex(3,g),vertex(4,g),0,g); tie(e,inserted) = add_edge(vertex(3,g),vertex(5,g),0,g); tie(e,inserted) = add_edge(vertex(3,g),vertex(7,g),0,g); tie(e,inserted) = add_edge(vertex(4,g),vertex(5,g),0,g); tie(e,inserted) = add_edge(vertex(5,g),vertex(6,g),0,g); tie(e,inserted) = add_edge(vertex(1,g),vertex(4,g),50,g); tie(e,inserted) = add_edge(vertex(1,g),vertex(3,g),100,g); tie(e,inserted) = add_edge(vertex(0,g),vertex(4,g),200,g); tie(e,inserted) = add_edge(vertex(2,g),vertex(5,g),500,g); tie(e,inserted) = add_edge(vertex(2,g),vertex(6,g),20,g); tie(e,inserted) = add_edge(vertex(2,g),vertex(4,g),50,g); tie(e,inserted) = add_edge(vertex(0,g),vertex(3,g),50,g); std::vector<float> param(2); std::vector<float> propriete(2); param[0] = 800; std::cerr<<"param[0] = "<<param[0]<<std::endl; param[1] = 20; std::cerr<<"param[1] = "<<param[1]<<std::endl; put(vertex_param,g,vertex(0,g),param); propriete = get(vertex_param,g,vertex(0,g)); std::cout<<"propriete[0]: "<<propriete[0]<<", propriete[1]: "<<propriete[1]<<std::endl; param.clear(); param[0] = 2; std::cerr<<"param[0] = "<<param[0]<<std::endl; param[1] = 50; std::cerr<<"param[1] = "<<param[1]<<std::endl; put(vertex_param,g,vertex(1,g),param); propriete = get(vertex_param,g,vertex(1,g)); std::cout<<"propriete[0]: "<<propriete[0]<<", propriete[1]: "<<propriete[1]<<std::endl; return 0; } /************************************************************************/ it compiles and executes, but the property of the second vertex has not been asigned. Here is the result it gives: /***************command window*************************************/ param[0] = 800 param[1] = 20 propriete[0]: 800, propriete[1]: 20 param[0] = 2 param[1] = 50 propriete[0]: 800, propriete[1]: 20 /**************************************************************************/ I tried without using "propriete" but directly"get(vertex_param,g,vertex(1,g)) [0]", and it gives a segmentation fault during the execution which confirms that the vertex property has not been asigned to the second vertex. Thanks! Camille.

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Re: [Boost-users] solved + bug with mingw (?) (was: [MPL] Need help crossing runtime boundary (lengthy))
by Ames Andreas 10 Mar '06

10 Mar '06

Hi all, I've solved my problem (FWIW, I attached member_notifier.cc). While trying it out, I observed that mingw (see attached mingw.out, it's gcc 3.4.4 with boost 1.33.0) can't compile that code. VC7.1 (boost 1.33.0) and VC8 (boost 1.33.1) accept the code and the exe runs as expected. Curiously a stripped down but very "similar" example (see attached inherit_test.cc) is also compiled by mingw. Is this mingw's or boost's fault, or is it even mine? cheers, aa -- Andreas Ames | Programmer | Comergo GmbH | Voice: +49 69 7505 3213 | andreas . ames AT comergo . com "I imagine Sisiphus as happy ..." Albert Camus

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Re: [Boost-users] New User With Busted Compiler
by RIVASSEAU Jean Noel 10 Mar '06

10 Mar '06

I never used uBLAS, but the documentation for it in the 1.33.1 distribution says that gcc 3.3 is supported. Jean-Noël -----Message d'origine----- De : boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] De la part de V. Thane Norton III Envoyé : vendredi 3 mars 2006 02:27 À : Boost-users(a)lists.boost.org Objet : [Boost-users] New User With Busted Compiler I have just started using Boost, and am really enjoying using it, especially uBLAS. Unfortunately, my production code needs to use GCC 3.3 (for marketing reasons) which the Boost 1.33.1 uBLAS does not support. What is the latest version of Boost that I can use for uBLAS on GCC 3.3? Is there some hackery that I can perform to get 1.33.1 working? ----------------------------------------- V. Thane Norton III Macintosh Software Engineer Wacom Technology Corporation phone: 360.896.9833 x172 mailto:tnorton@wacom.com _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

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[Announce] Mailing list downtime this Saturday
by Doug Gregor 10 Mar '06

10 Mar '06

All Boost mailing lists hosted at lists.boost.org will be down from 8pm to midnight EST this Saturday, March 11th while we migrate to a new, dedicated mail server provided by the Open Systems Lab at Indiana University. During this down time, the mail archives at lists.boost.org will be unavailable and any mail sent to lists.boost.org will be queued and forwarded. We ask that members refrain from posting messages to lists.boost.org during this time "just in case," although we expect that all mail sent during this time will be forwarded properly. If you should have any questions, please contact me directly at dgregor(a)cs.indiana.edu. Doug Gregor Boost Moderator dgregor(a)cs.indiana.edu

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Date-time question
by Sliwa, Przemyslaw (London) 10 Mar '06

10 Mar '06

Hi, I would like to know if there is a way to get the string representation (3 chars) from a boost::gregorian::date, e.g. 10/03/2006 returns "Fri". This is a pretty fundamental functionality but I could not find anything in the documentation. I probably missed something. Could anyone help? Thanks Pshemek Kind regards Pshemek Przemyslaw Sliwa Global Foreign Exchange FX Risk Engine Development Merrill Lynch ( +44 (0)20 7995 4182 ) +44 (0)79 6325 2319 * Email: przemyslaw_sliwa(a)ml.com -------------------------------------------------------- If you are not an intended recipient of this e-mail, please notify the sender, delete it and do not read, act upon, print, disclose, copy, retain or redistribute it. Click here for important additional terms relating to this e-mail. http://www.ml.com/email_terms/ --------------------------------------------------------

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Re: [Boost-users] serialization: again a problem, failing to serializeastd::vector of pointers
by RIVASSEAU Jean Noel 10 Mar '06

10 Mar '06

Joaquín, Unfortunately, my example code which does not compile on my platform (gcc 3.4.2 on Win 2000 Pro) seems to compile with Robert's platform (same compiler !!), so it is very strange... Thus Robert has not been able to help further. Jean-Noël _____ De : boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] De la part de Joaquín Mª López Muñoz Envoyé : vendredi 10 mars 2006 16:15 À : boost-users(a)lists.boost.org Objet : Re: [Boost-users] serialization: again a problem, failing to serializeastd::vector of pointers RIVASSEAU Jean Noel ha escrito: Hi Joaquin Jean-Noël, maybe you can try using the proposed patch at http://lists.boost.org/Archives/boost/2006/02/101539.php and report your results. I've got the hunch your problem might be related to the issue dealt with at that post. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users I replied to this, but did not hear from you again... Here was my reply below: Hello Jean-Noël, my apologies for not answering before, but I'm without a clue as to what the problem might be with your code... I suggested you applied the patches because the error messages seemed to be related to the problem I had been investigating in parallel, but looks like it is something else. Hasn't Robert assisted you? Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

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Re: [Boost-users] serialization: again a problem, failing to serializeastd::vector of pointers
by Joaquín Mª López Muñoz 10 Mar '06

10 Mar '06

RIVASSEAU Jean Noel ha escrito: > Hi Joaquin > > Jean-Noël, maybe you can try using the proposed patch at > > http://lists.boost.org/Archives/boost/2006/02/101539.php > > and report your results. I've got the hunch your problem might > > be related to the issue dealt with at that post. > > Joaquín M López Muñoz > > Telefónica, Investigación y Desarrollo > > _______________________________________________ > > Boost-users mailing list > > Boost-users(a)lists.boost.org > > http://lists.boost.org/mailman/listinfo.cgi/boost-users > > I replied to this, but did not hear from you again... Here was my > reply below: > Hello Jean-Noël, my apologies for not answering before, but I'm without a clue as to what the problem might be with your code... I suggested you applied the patches because the error messages seemed to be related to the problem I had been investigating in parallel, but looks like it is something else. Hasn't Robert assisted you? Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

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[BGL] Graph properties and dynamic properties
by Martin Palkovic 10 Mar '06

10 Mar '06

Hi, The example in http://www.boost.org/libs/graph/example/graphviz.cpp gives a hint how to use edge properties and vertex properties with dynamic properties when writing out the dot file. However, I would like to write out also graph properties, i.e. I have get_property(g, graph_overlap_t()) = "false"; dynamic_properties dp; dp.property("overlap", ?); dp.property("node_id", get(vertex_name_t(), g)); dp.property("strength", get(edge_strength_t(), g)); Thanks in advance for any help. Kind regards, Martin Palkovic

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Re: [Boost-users] serialization: again a problem, failing to serializea std::vector of pointers
by RIVASSEAU Jean Noel 10 Mar '06

10 Mar '06

Hi Joaquin Jean-Noël, maybe you can try using the proposed patch at http://lists.boost.org/Archives/boost/2006/02/101539.php and report your results. I've got the hunch your problem might be related to the issue dealt with at that post. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users I replied to this, but did not hear from you again... Here was my reply below: At this url, I have found two hpp files. I replaced the ones that originally came with the Boost 1.3.1 distribution with these ones. I still have an error, at the same line, however it is: C:/Boost/include/boost-1_33_1/boost/archive/detail/iserializer.hpp:115: error: no type named `type' in `struct boost::serialization::type_info_implementation<std::vector<MemberVariableSpecification*, std::allocator<MemberVariableSpecification*> > >' C:/Boost/include/boost-1_33_1/boost/archive/detail/iserializer.hpp:115: error: `get_instance' is not a member of `<declaration error>' While it was: C:/Boost/include/boost-1_33_1/boost/archive/detail/iserializer.hpp:115: error: incomplete type `boost::serialization::extended_type_info_null<std::vector<MemberVariableSpecification*, std::allocator<MemberVariableSpecification*> > >' used in nested name specifier with the original code from Boost 1.33.1. So this patch effectively changed something, but it still not working. I've not read the entire thread at your url since I did not understand it (it was about a specific compiler issue ??). Any ideas? Jean-Noël

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