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operators.hpp question.
by Fracassi＠t-online.de 22 Dec '04

22 Dec '04

Hello, I am trying to use the operators.hpp templates to create the following behaviour. I have a templated class like this. template <class T> class example {} now I want to do something like this: example<SomeType> r; example<SomeType> a; example<AnotherType> b; r = a * b To write the multiplication manually I would have to write a function template template <class T, class OtherT> example<T> operator*(const example<T>& op1, const example<OtherT>& op2); So, now my question is: How can this be done with operators.hpp? Obviously ... template <class T> class example : boost::multiplicative2<example<T>, example<OtherT> > { template <OtherT> example<T>& operator*=(const example<OtherT>& op); template <OtherT> example<T>& operator/=(const example<OtherT>& op); } ... won't work, since "OtherT" isn't defined at its first occurrence. Is there a way to do what I intended, or do I have to write these operators manually? Thanks, Fabio Fracassi

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[iterator] iterator_facade operator-> pointee always const
by Tobias Schwinger 22 Dec '04

22 Dec '04

Hi, While using boost::iterator_facade wirh a class type as argument for both the 'Reference' and the 'Value' template type parameter I noticed that I can't access non-const members via operator->. *i is not const and neither 'Value' nor 'Reference' are. A naiv look at the source shows me that operator_arrow_proxy::operator->() always returns 'T const *'. Is this a bug or an intentional restriction ? I'm using the current CVS version (just updated, head revision) and tried to compile with GCC and MSVC. Thanks for any help in advance, Tobias

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Re: [Boost-users] Re: Boost::Serialization Compile error and mytemporarysolution,
by zhengyi 22 Dec '04

22 Dec '04

hello , Robert Ramey In the last lettler , I forgot to tell you the error info of compiler. The msvc71 said that "wchar_t const * " can't be converted to type "std::wstring::const_iterator" , at the file "xml_escape.hpp" line 47. in stlport 4.6.2 , "std::wstring::const_iterator" is "const wchar_t * "(so I was mazed by the error info! ),but in ms-stl(vc71) , "std::wstring::const_iterator" is a nested class in basic_string<>.I don't konw what does stl_port4.53 implemented wstring. Another thing is : when i copy the file "xml_woarchive.cpp" to a simple msvc porject and compile it alone , there is no any error occured , regardless whether stlport is used. I think this is because some macro are difference between jam and ide enviroment , but I'm not sure. Robert Ramey wrote: > >> Do you think the modified code is right ? > >basically yes, it also eliminates a wcslen which is a good thing. I don't unstandard this word. do you talk about Run-Time Library function wcslen() ? in my opinion , with stl string , this function has no use . goodmen(a)x263.net 2004-12-23

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Boost::Serialization Compile error and my temporary solution,
by zhengyi 22 Dec '04

22 Dec '04

Dear Robert Ramey, I'm SO sorry to bother you again! When I compile Boost::Serialization(version 1.32.0) using msvc71+stlport4.6.2, I fond compile error in the file "xml_escape.hpp" line 47. I followed the way compile shown , and find the cause is in file "xml_woarchive_impl.ipp" line 108 . I think it is more reasonable to alter the function like this : /////////////////////////////////////////////////////////////////////////////// /////////////////////////////////////////////////////////////////////////////// #ifndef BOOST_NO_STD_WSTRING template<class Archive> void xml_woarchive_impl<Archive>::save(const std::wstring & ws){ typedef iterators::xml_escape<std::wstring::const_iterator> xmbtows; // This is changed by zhengyi !! otherwise ,using stlport can not // compile successfully std::copy( xmbtows(BOOST_MAKE_PFTO_WRAPPER(ws.begin()/*ws.data()*/)), xmbtows(BOOST_MAKE_PFTO_WRAPPER(ws.end()/*ws.data() + ws.size()*/)), boost::archive::iterators::ostream_iterator<wchar_t>(os) ); } #endif //BOOST_NO_STD_WSTRING /////////////////////////////////////////////////////////////////////////////// /////////////////////////////////////////////////////////////////////////////// When I using above code instead yours, the compiler seems happy. and when i switch to ms stl ,that's ok. The original code of yours can pass when using ms-stl , but will fail with stlport. Can you explain that ? Do you think the modified code is right ? How Can I build successfully without alter your code(I like stlport and do not want to define macro BOOST_NO_STD_WSTRING to avoid compile error ) ? Thanks for your patience to read this letter! Merry Christmas!! (two days early ^_^) goodmen(a)x263.net 2004-12-22

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Still having trouble with Mingw and install.
by Ken Perry 22 Dec '04

22 Dec '04

I just did bjam -sTOOLS=MINGW --install >From what I read that is supposed to put the libraries in c:\boost\lib and include in c:\boost\include.. It didn't. Now I think I did that the way the last reply said to so it should ahve worked any ideas? Kenx

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Q: boost::format : can formatting variable arguments lists be done ?
by Dan Dimerman 22 Dec '04

22 Dec '04

Hello, Currently I have a piece of code that logs messages much in the same way as printf() : void MyLogger::dump( const std::string& format, va_list& list ) { const unsigned short buf_size = 1024; char buffer[ buf_size ]; ::memset( buffer, 0, buf_size ); ::_vsnprintf( buffer, buf_size - 1, format.c_str(), list); /.../ } After many headaches (and crashes) due to mistaken format specification fields, I thought to upgrade my class's API to use boost::format, but alas, I couldn't find the way to feed the format object from a va_list. Is there a way? thanks in advance... Dan.

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[newbie] building serialization library
by Muruganathan Annamalai 22 Dec '04

22 Dec '04

hi, Is it possible to build the boost serialization library using VC6 compiler. --annamalai -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org]On Behalf Of Frank Brown Sent: Thursday, December 16, 2004 6:37 AM To: boost-users(a)lists.boost.org Subject: [Boost-users] newbie build question sorry if this has been asked before, it's very elementary but i can't find references in the archives or faq so here goes: i just installed boost libraries and built them via bjam. they seemed to build successfully. i'm using the vc7.1 compiler. when i try to compile (cl) a .cpp file containing the following include #include <boost/regex.hpp> i get the following: testBoost.cpp(8) : fatal error C1083: Cannot open include file: 'boost/regex.hpp': No such file or directory if i replace the include with the actual file spec like this: #include "C:\Boost\include\boost-1_32\boost\regex.hpp" i get the following compiler error: testboost.cpp C:\Boost\include\boost-1_32\boost\regex.hpp(28) : fatal error C1083: Cannot open include file: 'boost/regex/config.hpp': No such file or directory apparently the compiler (cl) isn't translating <boost>. since one boost header refers to others i need to fix this basic problem. i tried substituting the bjam.exe in place of cl to compile, then i get a different error: Unable to load Boost.Build: could not find "boost-build.jam" --------------------------------------------------------------- Attempted search from D:\c\whereis up to the root so i'm sorry to bother y'all with such a simple problem, all i need to know is how to compile (the 'hello world' scenario). thanks for your attention. -frank brown (stupid jerk) http://www.inwa.net/~frog _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

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boost::serialize on Codewarrior 8.3 (Mac)
by Ryan Wilcox 22 Dec '04

22 Dec '04

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello all, I would like to use boost::serialize for one of my projects, using Codewarrior 8.3 (going to CW 9 may or may not be in the picture), on Mac OS X (10.3.x) Anyway, I've been working on getting the unit tests for boost::serialize up and running inside the Codewarrior IDE. I created a new project file (C++, Mac OS Carbon, Console), included a serialize unit test, set the paths correctly, included the files I thought I would need for boost::test stuff, all that jazz. The test that I'm trying out now, in the serialization test suite, is test_binary.cpp. Trying to compile it gave me some immediate compiler errors (which I fixed by #including some additional source files: "binary_archive.hpp", "stdio.h" (tmpnam is in stdio.h in CW, and not cstdio). At the end I have just one error which I don't understand (both because the error message is hard to parse, and I'm fairly new to the boost libraries in general). Here, for completeness, is the error message: Error : illegal use of abstract class ('boost::archive::detail::basic_iserializer::load_object_data(boost::archive::detail::basic_iarchive &, void *, const unsigned int) const') ~ (point of instantiation: 'test_main(int, char **)') ~ (instantiating: 'boost::archive::detail::interface_iarchive<boost::archive::binary_iarchive>::operator>><boost::serialization::nvp<A>>(const boost::serialization::nvp<A> &)') ~ (instantiating: 'boost::archive::binary_iarchive_impl<boost::archive::binary_iarchive>::load_override<boost::serialization::nvp<A>>(boost::serialization::nvp<A> &, int)') ~ (instantiating: 'boost::archive::basic_binary_iarchive<boost::archive::binary_iarchive>::load_override<boost::serialization::nvp<A>>(boost::serialization::nvp<A> &, int)') ~ (instantiating: 'boost::archive::load<boost::archive::binary_iarchive, boost::serialization::nvp<A>>(boost::archive::binary_iarchive &, boost::serialization::nvp<A> &)') ~ (instantiating: 'boost::archive::detail::load_non_pointer_type<boost::archive::binary_iarchive, boost::serialization::nvp<A>>::invoke(boost::archive::binary_iarchive &, boost::serialization::nvp<A> &)') ~ (instantiating: 'boost::archive::detail::load_non_pointer_type<boost::archive::binary_iarchive, boost::serialization::nvp<A>>::load_only::invoke(boost::archive::binary_iarchive &, boost::serialization::nvp<A> &)') ~ (instantiating: 'boost::serialization::serialize_adl<boost::archive::binary_iarchive, boost::serialization::nvp<A>>(boost::archive::binary_iarchive &, boost::serialization::nvp<A> &, const unsigned int)') ~ (instantiating: 'boost::serialization::serialize<boost::archive::binary_iarchive, boost::serialization::nvp<A>>(boost::archive::binary_iarchive &, boost::serialization::nvp<A> &, const unsigned int)') ~ (instantiating: 'boost::serialization::access::serialize<boost::archive::binary_iarchive, boost::serialization::nvp<A>>(boost::archive::binary_iarchive &, boost::serialization::nvp<A> &, const unsigned int)') ~ (instantiating: 'boost::serialization::nvp<A>::serialize<boost::archive::binary_iarchive>(boost::archive::binary_iarchive &, const unsigned int) const') ~ (instantiating: 'boost::archive::detail::interface_iarchive<boost::archive::binary_iarchive>::operator&<A>(A &)') ~ (instantiating: 'boost::archive::binary_iarchive_impl<boost::archive::binary_iarchive>::load_override<A>(A &, int)') ~ (instantiating: 'boost::archive::basic_binary_iarchive<boost::archive::binary_iarchive>::load_override<A>(A &, int)') ~ (instantiating: 'boost::archive::load<boost::archive::binary_iarchive, A>(boost::archive::binary_iarchive &, A &)') ~ (instantiating: 'boost::archive::detail::load_non_pointer_type<boost::archive::binary_iarchive, A>::invoke(boost::archive::binary_iarchive &, A &)') ~ (instantiating: 'boost::archive::detail::load_non_pointer_type<boost::archive::binary_iarchive, A>::load::invoke(boost::archive::binary_iarchive &, A &)') ~ (instantiating: 'boost::archive::detail::iserializer<boost::archive::binary_iarchive, A>::instantiate()') iserializer.hpp line 142 static iserializer instance; _____ I don't, really, understand why there's an error here, as iserializer is ~ a non-abstract type (as far as I can see), but it looks like there's plenty of template stuff going on, and there may be a clue in there. Does anyone have any pointers, or ideas on how I can fix this error? Thanks, _Ryan Wilcox ================================================================ Wilcox Development Solutions: http://www.wilcoxd.com Toolsmiths for the Internet Age PGP: 0x2F4E9C31 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (Darwin) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFBx1BUbYO0qC9OnDERAtAcAJ4nR0Zff4hFRNQJzyVybmIO1DF7IwCff2LK 1KAnmA4JtS6AOvLgrJxVkF4= =/7gM -----END PGP SIGNATURE-----

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program_options custom type problem
by Jacques Kerner 22 Dec '04

22 Dec '04

Hi, I am trying to use a custom type with the program_options library, but I get the "invalid option value" error when running my application, although inline parameters are correctly read. Here is what I do : I define a class ApplicationLocator consisting of two integer members, "site" and "application" and the corresponding >> and << operator towards and from stringstream. The following method in lexical_cast.hpp returns false : bool operator>>(InputStreamable &output) { return !is_pointer<InputStreamable>::value && stream >> output && (stream >> std::ws).eof(); } which results in an exception being thrown eventually, by this code (also in lexical_cast.hpp) : template<typename Target, typename Source> Target lexical_cast(Source arg) { detail::lexical_stream<Target, Source> interpreter; Target result; if(!(interpreter << arg && interpreter >> result)) throw_exception(bad_lexical_cast(typeid(Target), typeid(Source))); return result; } The problem is that my >> operator returns true alright. Maybe I am wrong, but apparently what returns false is (stream >> std::ws).eof(); which I do not quite understand, let alone know how to avoid. Could someone kindly give me guidance on this ? Here is my custom type related code : #include <strstream> #include <boost/algorithm/string/split.hpp> #include <boost/lambda/lambda.hpp> class ApplicationLocator { public: ApplicationLocator() : site(0), application(0) {} ApplicationLocator(const int & aSite, const int & anApplication) : site(aSite), application(anApplication) {} int site; int application; }; bool operator>>(const std::stringstream & input, ApplicationLocator &output) { std::vector<std::string> splitString; boost::algorithm::split( splitString, std::string(input.str()), boost::lambda::_1=='.' ); if (splitString.size() > 1) { output.site = atoi(splitString[0].c_str()); output.application = atoi(splitString[1].c_str()); return true; } else { return true; } return true; } std::stringstream & operator<<(std::stringstream & output, const ApplicationLocator & input) { output << input.site << "." << input.application << '\0'; return output; } and the program_options related code : boost::program_options::positional_options_description positional; boost::program_options::variables_map configurationVariablesMap; try { boost::program_options::options_description desc("Allowed options"); desc.add_options() ("help,h", "produce help message") ("self-id,s", boost::program_options::value<ApplicationLocator>()->default_value(ApplicationLocator(1,1)), "This application's DIS identifier : site.application (separated by a dot)") ("instructor-id,i", boost::program_options::value<ApplicationLocator>()->default_value(ApplicationLocator(2,1)), "This instructor's DIS identifier : site.application (separated by a dot)") ; boost::program_options::store(boost::program_options::command_line_parser(argc, argv).options(desc).run(), configurationVariablesMap); boost::program_options::notify(configurationVariablesMap); if (configurationVariablesMap.count("help")) { std::cout << "Usage: options_description [options]\n"; std::cout << desc; return 0; } } catch(exception& e) { std::cout << e.what() << std::endl; return 1; } Thank you all in advance. Jacques Kerner

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filtered graph
by Matthias Linkenheil 22 Dec '04

22 Dec '04

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multi_index : performance issue
by Stanislas RENAN 22 Dec '04

22 Dec '04

Hi, I've got a performance problem during a test I've done with multi_index on MSVC 6.0 SP 6. I'm using BOOST 1.32.0 . The search performance is comparable with several maps, but insertion is dramatically slow : 5mn 30s for 10 000 employees. Here is my test code : === /* Boost.MultiIndex basic example. * * Copyright 2003-2004 Joaquín M López Muñoz. * Distributed under the Boost Software License, Version 1.0. * (See accompanying file LICENSE_1_0.txt or copy at * http://www.boost.org/LICENSE_1_0.txt) * * See http://www.boost.org/libs/multi_index for library home page. */ #include "stdafx.h" #if !defined(NDEBUG) #define BOOST_MULTI_INDEX_ENABLE_INVARIANT_CHECKING #define BOOST_MULTI_INDEX_ENABLE_SAFE_MODE #endif #include <boost/multi_index_container.hpp> #include <boost/multi_index/member.hpp> #include <boost/multi_index/ordered_index.hpp> #include <algorithm> #include <iostream> #include <iterator> #include <string> #include <cstdlib> #include <map> #include <vector> #include <ctime> #include <sstream> #include <iomanip> using boost::multi_index_container; using namespace boost::multi_index; /* an employee record holds its ID, name and age */ struct employee { int m_id; std::string m_name; int m_age; employee(int id_,const std::string& name_,int age_):m_id(id_),m_name(name_),m_age(age_){} void set(int id_,const std::string& name_,int age_) { m_id=id_; m_name=name_; m_age=age_; } const employee& operator =(const employee& e) { set(e.m_id, e.m_name, e.m_age); return *this; } employee(const employee& e) { set(e.m_id, e.m_name, e.m_age); } int id() const { return m_id; } // impossible d'appeler la fonction et l'index "id" const std::string& name() const { return m_name; } int age() const { return m_age; } friend std::ostream& operator<<(std::ostream& os,const employee& e) { os<<e.m_id<<" "<<e.m_name<<" "<<e.m_age<<std::endl; return os; } }; /* tags for accessing the corresponding indices of employee_set */ struct id{}; struct name{}; struct age{}; /* see Advanced topics: Use of member_offset for info on * BOOST_MULTI_INDEX_MEMBER */ /* Define a multi_index_container of employees with following indices: * - a unique index sorted by employee::int, * - a non-unique index sorted by employee::name, * - a non-unique index sorted by employee::age. */ typedef multi_index_container< employee, indexed_by< ordered_unique< tag<id>, BOOST_MULTI_INDEX_MEMBER(employee,int,m_id)>, ordered_non_unique< tag<name>,BOOST_MULTI_INDEX_MEMBER(employee,std::string,m_name)>, ordered_non_unique< tag<age>, BOOST_MULTI_INDEX_MEMBER(employee,int,m_age)> > > employee_set; template<typename Tag,typename MultiIndexContainer> void print_out_by( const MultiIndexContainer& s, Tag* =0 /* fixes a MSVC++ 6.0 bug with implicit template function parms */ ) { /* obtain a reference to the index tagged by Tag */ const typename boost::multi_index::index<MultiIndexContainer,Tag>::type& i= get<Tag>(s); typedef typename MultiIndexContainer::value_type value_type; /* dump the elements of the index to cout */ std::copy(i.begin(),i.end(),std::ostream_iterator<value_type>(std::cout)); } // Un conteneur qui permet de contenir des employee // triés sur 3 index. class EmployeeMapper { std::map<int, employee *> m_byId; std::map<std::string, employee *> m_byName; std::map<int, employee *> m_byAge; typedef std::map<int, employee *>::iterator EMIdIt; typedef std::map<std::string, employee *>::iterator EMNameIt; typedef std::map<int, employee *>::iterator EMAgeIt; public: EmployeeMapper() {} ~EmployeeMapper() { // Deux lignes pour éviter que ces objets ne contiennent // des pointeurs invalides pendant la destruction va un // autre conteneur. m_byName.clear(); m_byAge.clear(); std::map<int, employee *>::iterator it; while ((it=m_byId.begin()) != m_byId.end()) { delete it->second; m_byId.erase(it); } } void add(const employee& e) { employee * e2 = NULL; try { e2 = new employee(e); } catch(...) { delete e2; throw; } m_byId[e2->id()] = e2; m_byName[e2->name()] = e2; m_byAge[e2->age()] = e2; } employee* byId(int id) { EMIdIt it = m_byId.find(id); if (it == m_byId.end()) return NULL; else return it->second; } employee* byName(const std::string& name) { EMNameIt it = m_byName.find(name); if (it == m_byName.end()) return NULL; else return it->second; } employee* byAge(int age) { EMAgeIt it = m_byAge.find(age); if (it == m_byAge.end()) return NULL; else return it->second; } private: // fonctions inhibées EmployeeMapper(const EmployeeMapper&); const EmployeeMapper& operator=(const EmployeeMapper&); }; // Retourne un entier tq : 0 <= entier < maximum int alea(int maximum) { return int(std::min(maximum, RAND_MAX) * rand() / (RAND_MAX + 1.0)); } int main() { // Init aléatoire srand( (unsigned)time( NULL ) ); employee_set es; EmployeeMapper em; const int tailleEnsemble = 10000; const int tailleEchantillon = 10; const int moduloEchantillon = tailleEnsemble / tailleEchantillon; const int nbRecherches = 10000; std::vector<std::string> noms; noms.push_back("Alphonse"); noms.push_back("Éléonore"); noms.push_back("Gaston"); noms.push_back("Séverine"); noms.push_back("Zorglub"); std::vector<employee> jeuDeDepart; std::vector<employee> jeuARechercher; int i=0; for (i=0; i < tailleEnsemble; ++i) { std::ostringstream os; // Construction d'un nom unique avec un caractère aléatoire // Cela reflète le type de données gérées en réalité. // L'ajout de i implique l'unicité. os << noms[alea(5)] << std::setw(5) << std::setfill('0') << alea(30000) << std::setw(5) << std::setfill('0') << i; employee e(i, // index numérique unique os.str(), // nom, chaîne unique alea(100)); // valeur potentiellement dupliquée jeuDeDepart.push_back(e); // On conserve un échantillon à rechercher plus tard if (0 == i % moduloEchantillon) { //employee_set::iterator it=get<id>(es).find(i); //if (it != es.end()) jeuARechercher.push_back(jeuDeDepart[i]); } } clock_t tes1, tes2; tes1 = clock(); for (i=0; i < tailleEnsemble; ++i) { es.insert(jeuDeDepart[i]); } tes2 = clock(); clock_t tem1, tem2; tem1 = clock(); for (i=0; i < tailleEnsemble; ++i) { em.add(jeuDeDepart[i]); } tem2 = clock(); clock_t t1_1, t2_1; t1_1 = clock(); // Accède à un certain nombre d'éléments précis selon // plusieurs index for (i=0; i < nbRecherches; ++i) { for (std::vector<employee>::iterator it = jeuARechercher.begin(); it != jeuARechercher.end(); ++it) { // Les fonctions membres template qui permette de trouver les // index par tag ne fonctionnent pas avec MSVC 6 employee_set::iterator eit = get<id>(es).find(it->id()); nth_index_iterator<employee_set,1>::type eit2 = get<1>(es).find(it->name()); nth_index_iterator<employee_set,2>::type eit3 = get<2>(es).find(it->age()); } } t2_1 = clock(); clock_t t1_2, t2_2; t1_2 = clock(); // Deuxième méthode : avec des maps et des news. for (i=0; i < nbRecherches; ++i) { for (std::vector<employee>::iterator it = jeuARechercher.begin(); it != jeuARechercher.end(); ++it) { em.byId(it->id()); em.byName(it->name()); em.byAge(it->age()); } } t2_2 = clock(); double d1, d2; d1 = t1_2 - t1_1; d2 = t2_2 - t2_1; std::cout << "Insertion" << std::endl; std::cout << "multi = " << (tes2-tes1) << std::endl << "STL = " << (tem2-tem1) << std::endl; std::cout << "Recherche" << std::endl; std::cout << "multi = " << d1 << std::endl << "STL = " << d2 << std::endl; return 0; } === Here are the results displayed : === Insertion multi = 329125 STL = 156 Recherche multi = 735 STL = 625 === Am I doing something wrong ? Note that I do not instanciate anything explicitely during insertion loop. Regards -- Stanislas RENAN

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Building with Mingw under XP
by Ken Perry 22 Dec '04

22 Dec '04

I am not sure if this has been asked before I tryed searching the archives but there was no search function and a whole bunch of topics. My problem is I am using Mingw under windows xp Pro. I am trying to get the libraries to compile and install in c:\boost which from what I have read is the default directory. when I do bjam --install -sTOOLS=mingw It seems to compile the libraries of corse I think 88 of them fail but it doesn't move the libraries over. What am I doing wrong? Oh one more thing it complains that I don't have python installed at the beginning do I have to have that library because I don't use it in the source I am porting from Linux I just need the boost libraries to get the software ported. Ken

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Re: [Boost-users] boost::serialize on Codewarrior 8.3 (Mac)
by Ryan Wilcox 22 Dec '04

22 Dec '04

On 12/21/04, at 10:09 PM, Ryan Wilcox said: >-----BEGIN PGP SIGNED MESSAGE----- >Hash: SHA1 > > >>--- At Mon, 20 Dec 2004 17:21:11 -0500, Ryan Wilcox wrote: > >>>I would like to use boost::serialize for one of my projects, using >>>Codewarrior 8.3 (going to CW 9 may or may not be in the picture), on >>>Mac OS X (10.3.x) > >I reproduced this error with the following Simplest Sample That Will >(for me) Fail To Compile. [snip] >Part of the error message (the beginning and the end) are still inline >(although just a copy from the OP, it is 999.95% the same as what I get >when I try to compile this sample. Oh wait, no it's not. Same result, differnt path, the header and the footer of the error message are the same, but the body is slighly different. It Might Be Useful to folk, so I've included it again. (somewhat sorry if I violated list policy here) See below: Error : illegal use of abstract class ('boost::archive::detail::basic_iserializer::load_object_data(boost::archive::detail::basic_iarchive &, void *, const unsigned int) const') (point of instantiation: 'main()') (instantiating: 'boost::archive::detail::interface_iarchive<boost::archive::text_iarchive>::operator>><boost::serialization::nvp<std::vector<int, std::allocator<int>>>>(const boost::serialization::nvp<std::vector<int, std::allocator<int>>> &)') (instantiating: 'boost::archive::text_iarchive_impl<boost::archive::text_iarchive>::load_override<boost::serialization::nvp<std::vector<int, std::allocator<int>>>>(boost::serialization::nvp<std::vector<int, std::allocator<int>>> &, int)') (instantiating: 'boost::archive::basic_text_iarchive<boost::archive::text_iarchive>::load_override<boost::serialization::nvp<std::vector<int, std::allocator<int>>>>(boost::serialization::nvp<std::vector<int, std::allocator<int>>> &, int)') (instantiating: 'boost::archive::load<boost::archive::text_iarchive, boost::serialization::nvp<std::vector<int, std::allocator<int>>>>(boost::archive::text_iarchive &, boost::serialization::nvp<std::vector<int, std::allocator<int>>> &)') (instantiating: 'boost::archive::detail::load_non_pointer_type<boost::archive::text_iarchive, boost::serialization::nvp<std::vector<int, std::allocator<int>>>>::invoke(boost::archive::text_iarchive &, boost::serialization::nvp<std::vector<int, std::allocator<int>>> &)') (instantiating: 'boost::archive::detail::load_non_pointer_type<boost::archive::text_iarchive, boost::serialization::nvp<std::vector<int, std::allocator<int>>>>::load_only::invoke(boost::archive::text_iarchive &, boost::serialization::nvp<std::vector<int, std::allocator<int>>> &)') (instantiating: 'boost::serialization::serialize_adl<boost::archive::text_iarchive, boost::serialization::nvp<std::vector<int, std::allocator<int>>>>(boost::archive::text_iarchive &, boost::serialization::nvp<std::vector<int, std::allocator<int>>> &, const unsigned int)') (instantiating: 'boost::serialization::serialize<boost::archive::text_iarchive, boost::serialization::nvp<std::vector<int, std::allocator<int>>>>(boost::archive::text_iarchive &, boost::serialization::nvp<std::vector<int, std::allocator<int>>> &, const unsigned int)') (instantiating: 'boost::serialization::access::serialize<boost::archive::text_iarchive, boost::serialization::nvp<std::vector<int, std::allocator<int>>>>(boost::archive::text_iarchive &, boost::serialization::nvp<std::vector<int, std::allocator<int>>> &, const unsigned int)') (instantiating: 'boost::serialization::nvp<std::vector<int, std::allocator<int>>>::serialize<boost::archive::text_iarchive>(boost::archive::text_iarchive &, const unsigned int) const') (instantiating: 'boost::archive::detail::interface_iarchive<boost::archive::text_iarchive>::operator&<std::vector<int, std::allocator<int>>>(std::vector<int, std::allocator<int>> &)') (instantiating: 'boost::archive::text_iarchive_impl<boost::archive::text_iarchive>::load_override<std::vector<int, std::allocator<int>>>(std::vector<int, std::allocator<int>> &, int)') (instantiating: 'boost::archive::basic_text_iarchive<boost::archive::text_iarchive>::load_override<std::vector<int, std::allocator<int>>>(std::vector<int, std::allocator<int>> &, int)') (instantiating: 'boost::archive::load<boost::archive::text_iarchive, std::vector<int, std::allocator<int>>>(boost::archive::text_iarchive &, std::vector<int, std::allocator<int>> &)') (instantiating: 'boost::archive::detail::load_non_pointer_type<boost::archive::text_iarchive, std::vector<int, std::allocator<int>>>::invoke(boost::archive::text_iarchive &, std::vector<int, std::allocator<int>> &)') (instantiating: 'boost::archive::detail::load_non_pointer_type<boost::archive::text_iarchive, std::vector<int, std::allocator<int>>>::load::invoke(boost::archive::text_iarchive &, std::vector<int, std::allocator<int>> &)') (instantiating: 'boost::archive::detail::iserializer<boost::archive::text_iarchive, std::vector<int, std::allocator<int>>>::instantiate()') iserializer.hpp line 142 static iserializer instance(); Thanks, _Ryan Wilcox

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boost::posix_time::ptime - Parsing time - clarification
by Rakesh Kumar 22 Dec '04

22 Dec '04

Hi, I was going through the API to parse a date-time field. I came across the boost library regarding the same. #include "boost/date_time/posix_time/posix_time.hpp" using namespace boost::posix_time; #include <iostream> #include <cstdlib> using std::cout; int main() { std::string ts("2002-01-20 23:59:59.000"); ptime t(time_from_string(ts)); cout << to_simple_string(t); return EXIT_SUCCESS; } This example compiled fine and gave me the right results. But suppose if I have another date representation as follows. 06 Dec 2004 10:40:58.000 If I enter the same string and try to parse from it, the method time_from_string aborts. I was wondering if there is any way I can tell time_from_string the format and try to parse from it. __________________________________ Do you Yahoo!? Yahoo! Mail - Find what you need with new enhanced search. http://info.mail.yahoo.com/mail_250

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[program_options] option mnemonics
by Joe Higham 21 Dec '04

21 Dec '04

In addition to the ability to define a long and short (one character) name for an option, is there a way to provide an "in-between" name? This way an alias, acronym, or mnemonic version could be provided. For example: desc.add_options() ( "very-long-option-name,vlon,v", value< string >, "a long option name" ) ; and cout << desc would print something like: -v | -vlon | --very-long-option-name arg : a long option name I would also not mind giving up the single-character version in favor of a mnemonic: desc.add_options() ( "very-long-option-name,vlon", value< string >, "a long option name" ) ; cout << desc would print: -vlon [--very-long-option-name] arg : a long option name -- Joe Higham / Blue Sky Studios

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Lambda return type deduction off of the generated lambda fctor (is it possible?)
by Brian Braatz 21 Dec '04

21 Dec '04

I wrote up the simple example that shows what I am trying to figure out Basically, I am trying to pull the deduced return type (or explicitly passed as a template param in lambda bind()) in my template: Any help or direction is greatly appreciated template <typename CURRIEDTYPE> // Id class for currying type without creating the object class Id { public: typedef CURRIEDTYPE TYPE; }; // Explictly pass IN a return type template < typename TFUNCTOR, typename TRET> TRET CallFctorPassInRet ( TFUNCTOR & functor, Id<TRET> & ) { Id<TRET>::TYPE TRet; TRet = functor(); return TRet; } std::string ReturnAString() { return "this is a string"; } // try to get return type from the lambda fctor // Below does not compile- but it is along the lines of what I // WANT to do- note that I am trying to get from the Lambda functor the deduced return type template < typename TFUNCTOR> TFUNCTOR::result_type CallFctorDeduceRet( TFUNCTOR & functor) { return functor(); } void Test_LambdaRetDeduction() { std::cout << "CallFctorPassInRet returns [" << CallFctorPassInRet( bind(&ReturnAString), Id<std::string>()) << "]" << std::endl; // below is what I want to make work std::cout << "CallFctorDeduceRet returns [" << CallFctorDeduceRet( bind<std::string>(&ReturnAString)) << "]" << std::endl; }

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Class template spec with enable_if
by Agoston Bejo 21 Dec '04

21 Dec '04

Hello again! See the example below. (Platform: VC++7.1) This error is strange for me because it only occurs in the case of class template specialization. The compiler deduces the type of is_arithmetic<T>::value falsely, not as bool, althought it is known at compile time, isn't it? The error messages (both referring to the erroneous line marked with "ERROR"): error C2296: '&&' : illegal, left operand has type 'is_arithmetic<T>::value' error C2297: '&&' : illegal, right operand has type 'is_arithmetic<T2>::value' Thx, Agoston Example: //------------------------------------------------------- #include <iostream> #include <boost/utility/enable_if.hpp> #include <boost/type_traits.hpp> #include <boost/mpl/and.hpp> using namespace std; using namespace boost; using namespace mpl; // ----------------- template<typename T1, typename T2, typename TEnabler = void> struct Enabler { static const bool value = false; }; template<typename T1, typename T2> struct Enabler<T1, T2, typename enable_if_c< is_arithmetic<T1>::value && is_arithmetic<T2>::value >::type // ERROR!!! > { static const bool value = true; }; */ /* //WOULD WORK: typename enable_if< and_< is_arithmetic<T1>, is_arithmetic<T2> > >::type */ // ----------------- template<typename T1, typename T2> typename enable_if_c< is_arithmetic<T1>::value && is_arithmetic<T2>::value >::type f(T1 t1, T2 t2) { cout << t1 << " " << t2 << endl; } // ----------------- int _tmain(int argc, _TCHAR* argv[]) { f(5.0, 6); return 0; }

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Do you think the Serialization Lib too disordered ?
by zhengyi 21 Dec '04

21 Dec '04

Serialization Lib doesn't have any single header file that can include for all. you must include every class header file separately. And what's the archive ? What is it's role ? Does it is an other liberary?(There is not any info in the downloaded Doc ). My Test code can't link successfully. The linker said there are some unresolved external symbol. It seems that some class was implemented in files in the archive. But this dir is not a "project",and the bjam do not compile it .it is simple copy file to the destination. It seems that those classes were not exposed by the serialization project 　　　　　　　　　　　　　　zhengyi 　　　　　　　　　　　　　　goodmen(a)x263.net 　　　　　　　　　　　　　　　　　2004-12-08

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question - modify depth_first_search
by Matthias Linkenheil 21 Dec '04

21 Dec '04

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AW: [Boost-users] boost::variant with boost::signals leads toInternalCompiler Error with MSDEV 7.1
by "Meißner, Joachim" 21 Dec '04

21 Dec '04

Removing successivly the compiler switches I finally coud build my code snippet by Removing the /Gm option. Jom > Von: Meißner, Joachim > Gesendet: Dienstag, 21. Dezember 2004 09:01 > > I'm using this compiler call (generated by QT's qmake): > > cl.exe /Od /I "\boost-1.32.0" /I "\Qt\include" /I "." /I > "\Qt\mkspecs\win32-msvc.net" /D "_WINDOWS" /D "UNICODE" /D > "WIN32" /D "BOOST_SIGNALS_NAMESPACE=signalslib" /D > "QT_THREAD_SUPPORT" /Gm /EHsc /MTd /GR /Fo".\\" /Fd".\\" /W3 > /nologo /c /Zi /TP -Zm200 -GX -GX -w34100 -w34189 test_wrap.cpp > > Resulting in this error: > > ..\boost-1.32.0\boost\mpl\aux_\preprocessed\plain\apply_wrap.h > pp(48) : fatal error C1001: INTERNAL C OMPILER ERROR > > Compiler is: > Microsoft Development Environment Version 7.1.3088 > > Jom

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boost::variant with boost::signals leads to Internal Compiler Error with MSDEV 7.1
by "Meißner, Joachim" 21 Dec '04

21 Dec '04

Hi Environment: MS 7.1 compile with MS implementation of STL Boost 1.32.0 Summary: I get an internal compiler error using boost::variant as a parameter of a boost::signal compiling with MSDEV 7.1, but not with gcc3.3/3.4 or MinGW (3.5). Does anyone knows a workaround other than not using boost::signals? Details Using a signal with a variant of 2 simple classes (see code snippet) leads to an internal compiler error C1001. Using pragma command to turn optimisation off as Suggested by the compiler does not change a thing Does anyone knows a workaround? Regards, jom Here's the bad code snippet: #include <boost/bind.hpp> #include <boost/signals.hpp> #include <boost/variant.hpp> #include <vector> class MessageException : public std::exception { public: MessageException() : std::exception( "Message error" ) {} }; class Message { public: typedef std::vector<unsigned char> Content; Message(unsigned int p, unsigned char def = ' ') : m_vector( p, def ) {} const Content& message() {return m_vector;} private: Content m_vector; }; typedef boost::variant<MessageException, Message> MessageVariant; class TestWrap { public: TestWrap(){} typedef boost::signal1<void, MessageVariant> MessageSignal; //typedef boost::signal<void (MessageVariant)> MessageSignal; void send_signal (MessageVariant& variant) { m_message_signal( variant ); } private: MessageSignal m_message_signal; };

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AW: [Boost-users] boost::variant with boost::signals leads toInternal Compiler Error with MSDEV 7.1
by "Meißner, Joachim" 21 Dec '04

21 Dec '04

I'm using this compiler call (generated by QT's qmake): cl.exe /Od /I "\boost-1.32.0" /I "\Qt\include" /I "." /I "\Qt\mkspecs\win32-msvc.net" /D "_WINDOWS" /D "UNICODE" /D "WIN32" /D "BOOST_SIGNALS_NAMESPACE=signalslib" /D "QT_THREAD_SUPPORT" /Gm /EHsc /MTd /GR /Fo".\\" /Fd".\\" /W3 /nologo /c /Zi /TP -Zm200 -GX -GX -w34100 -w34189 test_wrap.cpp Resulting in this error: ..\boost-1.32.0\boost\mpl\aux_\preprocessed\plain\apply_wrap.hpp(48) : fatal error C1001: INTERNAL C OMPILER ERROR Compiler is: Microsoft Development Environment Version 7.1.3088 Jom > -----Ursprüngliche Nachricht----- > Von: Victor A. Wagner Jr. [mailto:vawjr@rudbek.com] > Gesendet: Montag, 20. Dezember 2004 19:33 > > your snippit compiles fine using my vs7.1 and the latest from > CVS. is there some code needed to instantiate any of this > needed to cause the ICE? >

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CodeWarrior 9 for Mac
by Stephen W. Carson 21 Dec '04

21 Dec '04

Has anyone used boost on CodeWarrior 9 for Mac? Our Mac programmer tried compiling boost v1.30.0 on CodeWarrior v9.3 running on MacOS 10.3. She got a slew of compile errors, (beginning with a check() macro). Is there any point in proceeding? Thanks, -- Stephen W. Carson dirXion St. Louis, MO

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mutex.cpp with pthread problem
by Michael Garriss 21 Dec '04

21 Dec '04

from libs/thread/mutex.cpp in boost 1.31, around line 211: void mutex::do_lock() { int res = 0; res = pthread_mutex_lock(&m_mutex); if (res == EDEADLK) throw lock_error(); assert(res == 0); } that last assert is failing for me. pthread_mutex_lock is returning 22 which if it's from sys/errno.h is EINVAL or "Invalid argument". any ideas? i built boost 1.31 on hpux 11.11 with a gcc from hp. some info: > gcc -v Reading specs from /usr/local/lib/gcc-lib/hppa2.0w-hp-hpux11.11/3.3.3/specs Configured with: /scratch/zack/pkgbuild/3.3.1/hpux-11/gcc-3.3.3/configure --enable-languages=c,c++ --enable-threads=posix --disable-nls --with-gnu-as --without-gnu-ld --with-as=/usr/local/bin/as --prefix=/usr/local Thread model: posix gcc version 3.3.3 > uname -a HP-UX unknown B.11.11 U 9000/800 180901557 unlimited-user license thanks, mike

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Tuple access on Solaris
by darren.gilbert＠ubs.com 20 Dec '04

20 Dec '04

Hello, I was using the boost tuples library (from boost 1.31) to create a cache key. However, the Solaris compiler (SUNWspro v6.2.p1) complained when I tried to access the last element in the tuple. My class looked something like this: typedef enum result_type_id { ... } ResultTypeID; class ParamStateKey; class Cache { typedef boost::tuple<ParamStateKey, ResultTypeID, int, int, int> key_type; // cache implementation ... // some helper functions defined to hide the boost::tuple interface static ParamStateKey &GetState(key_type &k) { return boost::tuples::get<0>(k); } static ResultTypeID &GetGreek(key_type &k) { return boost::tuples::get<1>(k); } static int &GetProduct(key_type &k) { return boost::tuples::get<2>(k); } static int &GetSubpage(key_type &k) { return boost::tuples::get<3>(k); } static int &GetBucket(key_type &k) { return boost::tuples::get<4>(k); } static key_type MakeKey(const ParamStateKey &psk, ResultTypeID r, int p1, int p2, int bkt) { return boost::tuples::make_tuple(psk, r, p1, p2, bkt); } }; The solaris compiler complained whenever I tried to call Cache::GetBucket() with the following error: "../../../../incl/3rd/boost/tuple/detail/tuple_basic.hpp", line 105: Error: Could not find a match for boost::tuples::detail::get_class<0>::get<boost::tuples::detail::get_class<0>::RET, boost::tuples::detail::get_class<0>::HT, boost::tuples::detail::get_class<0>::TT>(boost::tuples::cons<int, boost::tuples::null_type>). "../../../../incl/3rd/boost/tuple/detail/tuple_basic.hpp", line 105: Where: While instantiating "static boost::tuples::detail::get_class<1>::get<int&, int, boost::tuples::cons<int, boost::tuples::null_type>>(boost::tuples::cons<int, boost::tuples::cons<int, boost::tuples::null_type>>&)". "../../../../incl/3rd/boost/tuple/detail/tuple_basic.hpp", line 105: Where: Instantiated from non-template code. Firstly, I have no way of deciphering that error message. Through trial and error, I found that removing the GetBucket() calls solved the problem. However, I needed these calls. I reasoned that since the other helper functions worked, it was a problem accessing the last element of the tuple. So I created a dummy entry in the tuple and redefined my typedef: typedef boost::tuple<ParamStateKey, ResultTypeID, int, int, int, int> key_type; This work-around is fine, so this is not an urgent problem. But it seems like this should not be necessary. ________________________________________ Darren Gilbert Associate Director UBS - Equities Quantitative Strategies Phone: +1 (312) 525-5766 Stein's law: "When a trend cannot continue it will stop." -- Herb Stein, Chairman of the Council of Economic Advisors under Nixon Visit our website at http://www.ubs.com This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. E-mail transmission cannot be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept liability for any errors or omissions in the contents of this message which arise as a result of e-mail transmission. If verification is required please request a hard-copy version. This message is provided for informational purposes and should not be construed as a solicitation or offer to buy or sell any securities or related financial instruments.

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