October 2009 - Boost-users - lists.preview.boost.org

[serialization] Special case of abstract Interface serialization.
by Germán Diago 23 Oct '09

23 Oct '09

Hello. I have a problem which I think it's not documented, and I don't know how to solve it. The problem is the following: I have a framework with an Object base class. I have an interface IDrawable. Interfaces don't inherit Object. Now I have a container, which holds IDrawables. class IDrawable { virtual void draw() const = 0; } Container<IDrawable *> drawables; //holds IDrawables that I know they are Objects. I do know that inside the drawables, objects are held, so now I want to serialize that container: ar << drawables; IDrawable does not hold any data, but Object does. So I want to serialize these objects in a polymorphic way, so that I can save anything derived from Object which is pointed by an IDrawable. Thanks for your time.

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[serialization] Cannot serialize multimap.
by Germán Diago 23 Oct '09

23 Oct '09

Hi. I have a multimap<A, B> where A and B are not default constructible. I provided load_construct_data and save_construct_data for both, but the library doesn't allow me to serialize this multimap. It fails at compile time: It seems to be the library trying to use default constructors. Does anyone know any way or a workaround or whatever to make this compile correctly? Thanks in advance.

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[asio] icmp example not working on Windows 2000
by Wolfgang Fertsak 23 Oct '09

23 Oct '09

Hello! The icmp example provided with the asio-library throws a system error with code 10044 "The support for the specified socket type does not exist in this address family." when compiled with _WIN32_WINNT 0x0500 and executed on an Win2000 machine. The error comes from the gai_echeck()-function which is called with family AF_INET and socktype SOCK_RAW: inline int gai_echeck(const char* host, const char* service, int flags, int family, int socktype, int protocol) { .... switch (family) { case AF_UNSPEC: break; case AF_INET: case AF_INET6: if (socktype != 0 && socktype != SOCK_STREAM && socktype != SOCK_DGRAM) return EAI_SOCKTYPE; ... I have attached the callstack for call to gai_echeck() I'm using Visual Studio 2005 and boost 1.39. I changed the return value of gai_echeck() back to 0 in the debugger and then the rest of the icmp(ping) example ran without any apparent problems. Best regards, Wolfgang boost::asio::detail::socket_ops::gai_echeck(const char * host=0x0012fad0, const char * service=0x0012faa8, int flags=0, int family=2, int socktype=3, int protocol=1) Line 1380 C++ boost::asio::detail::socket_ops::getaddrinfo_emulation(const char * host=0x0012fad0, const char * service=0x0012faa8, const addrinfo * hintsp=0x0012fa78, addrinfo * * result=0x0012faf0) Line 1441 + 0x1d bytes C++ boost::asio::detail::socket_ops::WspiapiGetAddrInfo(const char * host=0x0012fad0, const char * service=0x0012faa8, const addrinfo * hints=0x0012fa78, addrinfo * * result=0x0012faf0, boost::system::error_code & ec={...}) Line 1801 + 0x15 bytes C++ boost::asio::detail::resolver_service<boost::asio::ip::icmp>::resolve(boost::shared_ptr<void> & __formal={...}, const boost::asio::ip::basic_resolver_query<boost::asio::ip::icmp> & query={...}, boost::system::error_code & ec={...}) Line 147 + 0x51 bytes C++ boost::asio::ip::resolver_service<boost::asio::ip::icmp>::resolve(boost::shared_ptr<void> & impl={...}, const boost::asio::ip::basic_resolver_query<boost::asio::ip::icmp> & query={...}, boost::system::error_code & ec={...}) Line 105 + 0x1b bytes C++ boost::asio::ip::basic_resolver<boost::asio::ip::icmp,boost::asio::ip::resolver_service<boost::asio::ip::icmp> >::resolve(const boost::asio::ip::basic_resolver_query<boost::asio::ip::icmp> & q={...}) Line 98 + 0x1d bytes C++ pinger::pinger(boost::asio::io_service & io_service={...}, const char * destination=0x00324199) Line 32 + 0x1a bytes C++ main(int argc=2, char * * argv=0x00324170) Line 155 + 0x16 bytes C++

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[Program Options] first.cpp compile problem
by philip tucker 23 Oct '09

23 Oct '09

Hello, I'm an enthusiastic and grateful user of boost (multi_index_set, accumulators, much else), so first thanks a lot to you all. But I can't get program_options/example/first.cpp to compile. I am sure it's something simple I've missed, but I can't tell what. I am running boost 1.40, gcc version 4.0.1, on a new iMac. output: cc -g -o test obj/pgmopts.o -lstdc++ Undefined symbols: "boost::program_options::detail::cmdline::run()", referenced from: boost::program_options::basic_command_line_parser<char>::run () in pgmopts .o "boost::program_options::options_description_easy_init::operator() (char const* , boost::program_options::value_semantic const*, char const*)", referenced from: _main in pgmopts.o "boost::program_options::validation_error::what() const", referenced from: vtable for boost::exception_detail::error_info_injector<boost::program_opt ions::invalid_option_value>in pgmopts.o vtable for boost::program_options::invalid_option_valuein pgmopts.o vtable for boost::exception_detail::clone_impl<boost::exception_detail::er ror_info_injector<boost::program_options::invalid_option_value> >in pgmopts.o ... Help! and thanks again.

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[BGL] seg fault
by John Robertson 23 Oct '09

23 Oct '09

Replacing vector < set< Colour > > eColours; with std::map < int, set< Colour > > emColours; in edge properties. Using property_map < graph_t, map < int, <set< Colour > > > edge_properties::*>::type emColours_map = get(&edge_properties::emColours, g); But get compiler error: template argument 2 invalid. Thanks -JR

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[BGL] seg fault
by John Robertson 23 Oct '09

23 Oct '09

Something is goofy. Sometimes only part of my mail message is shown in the boost users list. Part is deleted. Using yahoo mail. Maybe its their new version thats messed up. -JR

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[BGL]seg fault : resend
by John Robertson 23 Oct '09

23 Oct '09

Trying to replace vector with std::map as follows. Replace typedef string Colour; struct edge_properties { vector < set< Colour > > eColours; } with typedef string Colour; struct edge_properties { std::map < int, set< Colour > > emColours; } Using property_map < graph_t, map < int, <set< Colour > > > edge_properties::*>::type emColours_map =get(&edge_properties::emColours,g); getting compiler errors error: template argument 2 is invalid error: template argument 4 is invalid Thanks -JR ReplyReply AllMove...InboxBGLGo to Previous message | Go to Next message | Back to Messages Select Message EncodingASCII (ASCII)Greek (ISO-8859-7)Greek (Windows-1253)Latin-10 (ISO-8859-16)Latin-3 (ISO-8859-3)Latin-6 (ISO-8859-10)Latin-7 (ISO-8859-13)Latin-8 (ISO-8859-14)Latin-9 (ISO-8859-15)W. European (850)W. European (CP858)W. European (HPROMAN8)W. European (MACROMAN8)W. European (Windows-1252)Armenia (ARMSCII-8)Baltic Rim (ISO-8859-4)Baltic Rim (WINDOWS-1257)Cyrillic (866)Cyrillic (ISO-8859-5)Cyrillic (KOI8-R)Cyrillic (KOI8-RU)Cyrillic (KOI8-T)Cyrillic (KOI8-U)Cyrillic (WINDOWS-1251)Latin-2 (852)Latin-2 (ISO-8859-2)Latin-2 (WINDOWS-1250)Turkish (ISO-8859-9)Turkish (WINDOWS-1254)Arabic (ISO-8859-6, ASMO-708)Arabic (WINDOWS-1256)Hebrew (856)Hebrew (862)Hebrew (WINDOWS-1255)Chinese Simplified (GB-2312-80)Chinese Simplified (GB18030)Chinese Simplified (HZ-GB-2312)Chinese Simplified (ISO-2022-CN)Chinese Simplified (WINDOWS-936)Chinese Trad.-Hong Kong (BIG5-HKSCS)Chinese Traditional (BIG5)Chinese Traditional (EUC-TW)Japanese (SHIFT_JIS)Japanese (EUC-JP)Japanese (ISO-2022-JP)Korean (ISO-2022-KR)Korean (EUC-KR)Thai (TIS-620-2533)Thai (WINDOWS-874)Vietnamese (TCVN-5712)Vietnamese (VISCII)Vietnamese (WINDOWS-1258)Unicode (UTF-7)Unicode (UTF-8)Unicode (UTF-16)Unicode (UTF-32)| Full Headers Mail Search #yui-main { background-color:#D6DEEC }gLaunchProfile.stop('RT_RP', false);gLaunchProfile.start('RT_BP');gLaunchProfile.start('LD_JS_BP');YAHOO.mc.intl = "us";YAHOO.mc.IM_TOGGLE_STRINGS = {"im_settings_helpurl" : "http://help.yahoo.com/l/us/yahoo/mail/classic/chat/","im_settings_help_toggle" : "1","im_enable_mobile_l10n": "1","im_sign_in": "true","im_time_format_am" : "AM","im_time_format_pm" : "PM","im_date_time_format" : "{M}/{d}/{yy} {h}:{mm} {A}"};if (YAHOO.mc.page.generic) {YAHOO.mc.page.generic.initComposeMenu();}YAHOO.mc.page.BasieSpaceId= "398300973";YAHOO.mc.page.TriggerULT=true;YAHOO.util.Event.onDOMReady(function () {sessionMgr.initSession();sessionMgr.loadFromBookmarks();});var adPrefetch = true;var isAdPrefetched = false;if (document.getElementById("JSMailOptionsLink")) {document.getElementById("JSMailOptionsLink").href = optionObj["JSMailOptionsLink"];}if (document.getElementById("chk_pop_options") || document.getElementById("chk_pop_error") || document.getElementById("option_bad_folder") || document.getElementById("folders_options_spam") || document.getElementById("folders_options_sent") || document.getElementById("spam_edit_options")) {YAHOO.util.Event.addListener(YAHOO.mc.optionsID, "click", displayOptions, optionObj);}YAHOO.namespace("fcue"); YAHOO.mc.FCUE_METADATA = {imInit:"",imSent:"",fcElap:"1254813133500",fcEcap:"2",fcNag:"",inEcap:"",inElap:""};YAHOO.mc.noCues = false;YAHOO.mc.msgrLoaded = false;YAHOO.mc.loadMsgr = function () {clearTimeout(YAHOO.mc.msgrLoadID);if (hasIM && !YAHOO.mc.msgrLoaded) {YAHOO.mc.msgrLoaded = true;YAHOO.util.Get.script("http://mail.yimg.com/d/combo?/mg/8_0_4/js/im_blue_all.js&/mg/8_0_4/js/us_st…");}};YAHOO.util.Event.on(window, "load", YAHOO.mc.loadMsgr);YAHOO.mc.msgrLoadID = setTimeout(YAHOO.mc.loadMsgr, 5000); if (YAHOO.mc.page.galaxy) { YAHOO.mc.page.galaxy.cleanup(); } YAHOO.mc.page.galaxy = new GalaxyHandler(); function myMsgHandler(fid, mid) { YAHOO.mc.page.galaxy.evtCallBack("showMessage?fid=" + fid + "&mid=" + mid + "&.rand=557745628"); } YAHOO.galaxy.setMsgListener(myMsgHandler); function myFolderHandler(fid, filterBy) { var filterUrl = ""; if (filterBy) { filterUrl += "&filterBy=" + filterBy; } YAHOO.mc.page.galaxy.evtCallBack("showFolder?fid=" + fid + filterUrl + "&.rand=557745628"); } YAHOO.galaxy.setFolderListener(myFolderHandler); gLaunchProfile.stop('LD_JS_BP', false);resizeLeftPane();gLaunchProfile.start('RT_AD_FOOT');

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[BGL] seg fault
by John Robertson 23 Oct '09

23 Oct '09

Trying to replace vector with std::map as follows. Replace typedef string Colour; struct edge_properties { vector < set< Colour > > eColours; } with typedef string Colour; struct edge_properties { std::map < int, set< Colour > > emColours; } Using property_map < graph_t, map < int, <set< Colour > > > edge_properties::*>::type emColours_map =get(&edge_properties::emColours,g); getting compiler errors error: template argument 2 is invalid error: template argument 4 is invalid Thanks -JR

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[BGL] seg fault
by John Robertson 22 Oct '09

22 Oct '09

Could I set the size of a set< String> at instantiation time? -JR

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[BGL] seg fault : more readable
by John Robertson 22 Oct '09

22 Oct '09

The following compiles and runs. typedef string Colour; struct edge_properties { vector < set< Colour > > eColours; } //get a reference to the vector of the sets of colours of some edge. vector < set<Colour> > & v_colour_outset = get(m_eColours_map,*out_iter); // Here *out_iter is some edge. //Add a set<Colour> to v_colour_outset ie. to get(m_eColours_map,*out_iter) . set<Colour> colour_set; v_colour_outset.push_back(colour_set); // get a reference to one of the set<colour> in get(m_eColours_map,*out_iter) . set<Colour> & outcset = v_colour_outset[1]; //or [0], or any elt.. But when I try to add a new colour to this set outcset.insert("Blue"); I get segfault. My guess is that there is a predetermined size for colour_set, and when it is push_backed into v_colour_outset, a new colour cannot be added into it. I tried to create a vector of set<Colour> references as follows. struct edge_properties { vector < set< Colour > & > eColours; } But it did not compile. ( shouldn't it? ) Whats the best solution to this problem. Thanks - JR ReplyReply AllMove...InboxBGLGo to Previous message | Go to Next message | Back to Messages Select Message EncodingASCII (ASCII)Greek (ISO-8859-7)Greek (Windows-1253)Latin-10 (ISO-8859-16)Latin-3 (ISO-8859-3)Latin-6 (ISO-8859-10)Latin-7 (ISO-8859-13)Latin-8 (ISO-8859-14)Latin-9 (ISO-8859-15)W. European (850)W. European (CP858)W. European (HPROMAN8)W. European (MACROMAN8)W. European (Windows-1252)Armenia (ARMSCII-8)Baltic Rim (ISO-8859-4)Baltic Rim (WINDOWS-1257)Cyrillic (866)Cyrillic (ISO-8859-5)Cyrillic (KOI8-R)Cyrillic (KOI8-RU)Cyrillic (KOI8-T)Cyrillic (KOI8-U)Cyrillic (WINDOWS-1251)Latin-2 (852)Latin-2 (ISO-8859-2)Latin-2 (WINDOWS-1250)Turkish (ISO-8859-9)Turkish (WINDOWS-1254)Arabic (ISO-8859-6, ASMO-708)Arabic (WINDOWS-1256)Hebrew (856)Hebrew (862)Hebrew (WINDOWS-1255)Chinese Simplified (GB-2312-80)Chinese Simplified (GB18030)Chinese Simplified (HZ-GB-2312)Chinese Simplified (ISO-2022-CN)Chinese Simplified (WINDOWS-936)Chinese Trad.-Hong Kong (BIG5-HKSCS)Chinese Traditional (BIG5)Chinese Traditional (EUC-TW)Japanese (SHIFT_JIS)Japanese (EUC-JP)Japanese (ISO-2022-JP)Korean (ISO-2022-KR)Korean (EUC-KR)Thai (TIS-620-2533)Thai (WINDOWS-874)Vietnamese (TCVN-5712)Vietnamese (VISCII)Vietnamese (WINDOWS-1258)Unicode (UTF-7)Unicode (UTF-8)Unicode (UTF-16)Unicode (UTF-32)| Full Headers Mail Search #yui-main { background-color:#D6DEEC }gLaunchProfile.stop('RT_RP', false);gLaunchProfile.start('RT_BP');gLaunchProfile.start('LD_JS_BP');YAHOO.mc.intl = "us";YAHOO.mc.IM_TOGGLE_STRINGS = {"im_settings_helpurl" : "http://help.yahoo.com/l/us/yahoo/mail/classic/chat/","im_settings_help_toggle" : "1","im_enable_mobile_l10n": "1","im_sign_in": "true","im_time_format_am" : "AM","im_time_format_pm" : "PM","im_date_time_format" : "{M}/{d}/{yy} {h}:{mm} {A}"};if (YAHOO.mc.page..generic) {YAHOO.mc.page.generic.initComposeMenu();}YAHOO.mc.page.BasieSpaceId= "398300973";YAHOO.mc.page.TriggerULT=true;YAHOO.util.Event.onDOMReady(function () {sessionMgr.initSession();sessionMgr.loadFromBookmarks();});var adPrefetch = true;var isAdPrefetched = false;if (document.getElementById("JSMailOptionsLink")) {document.getElementById("JSMailOptionsLink").href = optionObj["JSMailOptionsLink"];}if (document.getElementById("chk_pop_options") || document.getElementById("chk_pop_error") || document.getElementById("option_bad_folder") || document.getElementById("folders_options_spam") || document.getElementById("folders_options_sent") || document.getElementById("spam_edit_options")) {YAHOO.util.Event.addListener(YAHOO.mc.optionsID, "click", displayOptions, optionObj);}YAHOO.namespace("fcue"); YAHOO.mc.FCUE_METADATA = {imInit:"",imSent:"",fcElap:"1254813133500",fcEcap:"2",fcNag:"",inEcap:"",inElap:""};YAHOO.mc.noCues = false;YAHOO.mc.msgrLoaded = false;YAHOO.mc.loadMsgr = function () {clearTimeout(YAHOO.mc.msgrLoadID);if (hasIM && !YAHOO.mc.msgrLoaded) {YAHOO.mc.msgrLoaded = true;YAHOO.util.Get.script("http://mail.yimg.com/d/combo?/mg/8_0_4/js/im_blue_all.js&/mg/8_0_4/js/us_st…");}};YAHOO.util.Event.on(window, "load", YAHOO.mc.loadMsgr);YAHOO.mc.msgrLoadID = setTimeout(YAHOO.mc.loadMsgr, 5000); if (YAHOO.mc.page.galaxy) { YAHOO.mc.page.galaxy.cleanup(); } YAHOO.mc.page.galaxy = new GalaxyHandler(); function myMsgHandler(fid, mid) { YAHOO.mc.page.galaxy.evtCallBack("showMessage?fid=" + fid + "&mid=" + mid + "&.rand=635860173"); } YAHOO.galaxy.setMsgListener(myMsgHandler); function myFolderHandler(fid, filterBy) { var filterUrl = ""; if (filterBy) { filterUrl += "&filterBy=" + filterBy; } YAHOO.mc.page.galaxy.evtCallBack("showFolder?fid=" + fid + filterUrl + "&.rand=635860173"); } YAHOO.galaxy.setFolderListener(myFolderHandler); gLaunchProfile.stop('LD_JS_BP', false);resizeLeftPane();gLaunchProfile.start('RT_AD_FOOT');

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