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Re: [Boost-users] Boost String Algo Compilation failure
by Narinder Claire 21 Jul '11

21 Jul '11

Resolved Language extensions were disabled in the project settings. Re-enabling them allowed successful compilation. Rgds N

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boost interprocess intrusive_ptr question
by Brian 20 Jul '11

20 Jul '11

Hello I'm having a bit of trouble with something and I was hoping someone would be able to help me out. I'm using boost interprocess. Here's what I have: class Animal { ... code removed... } class Dog : public Animal { ... code removed... } class Cat : public Animal { ... code removed... } typedef boost::interprocess::allocator<intrusive_ptr<Animal, offset_ptr<Animal> >, managed_shared_memory::segment_manager> ShmemAllocator; typedef vector<intrusive_ptr<Animal, offset_ptr<Animal> >, ShmemAllocator> MyVector; int main(int argc, char * const argv[]) { ..code removed.. managed_shared_memory segment(create_only, "MySharedMemory", 65536); const ShmemAllocator alloc_inst(segment.get_segment_manager()); MyVector *myVector = segment.construct<MyVector>("MyVector")(alloc_inst); intrusive_ptr<Dog, offset_ptr<Dog> > dogPtr(segment.construct<Dog>("DogPtr")()); myVector->push_back(dogPtr); The myVector->push_back(dogPtr) line gives the following error: error: no matching function for call to 'boost::container::vector<boost::interprocess::intrusive_ptr<Animal, boost::interprocess::offset_ptr<Animal> >, boost::interprocess::allocator<boost::interprocess::intrusive_ptr<Animal, boost::interprocess::offset_ptr<Animal> >, boost::interprocess::segment_manager<char, boost::interprocess::rbtree_best_fit<boost::interprocess::mutex_family, boost::interprocess::offset_ptr<void>, 0ul>, boost::interprocess::iset_index> > >::push_back(boost::interprocess::intrusive_ptr<Dog, boost::interprocess::offset_ptr<Dog> >&)' I have been unable to get this to work. Can someone please tell me how to get my dogPtr into my Animal array? I was able to get it to work like this: intrusive_ptr<Animal, offset_ptr<Animal> > animalPtr(dynamic_pointer_cast<Animal>(dogPtr.get())); myVector->push_back(animalPtr); But that's kind of ugly, creating a new variable and all. I'm hoping I don't have to do that. Many thanks

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Boost String Algo Compilation failure
by Narinder Claire 20 Jul '11

20 Jul '11

Hello The following piece won't code : ----------------------------------- #include<string> #include<vector> #include<boost/algorithm/string.hpp> int main() { std::string str1("hello abc-*-ABC-*-aBc goodbye"); typedef std::vector< std::string > split_vector_type; split_vector_type SplitVec; // #2: Search for tokens boost::split( SplitVec, str1, boost::is_any_of("-*"), boost::token_compress_on ); } ----------------------------------------- compiles successfully with gcc 4.5.2(Linux) & VS2008 but fails with VS2010 with the following output: ------------------------------------------ 1>------ Build started: Project: main, Configuration: Debug Win32 ------ 1> main.cpp 1>c:\boost_1_47_0\boost\algorithm\string\find_iterator.hpp(184): warning C4224: nonstandard extension used : formal parameter 'Collection' was previously defined as a type 1>c:\boost_1_47_0\boost\algorithm\string\find_iterator.hpp(364): warning C4224: nonstandard extension used : formal parameter 'Collection' was previously defined as a type 1>c:\program files (x86)\microsoft visual studio 10.0\vc\include\xutility(2227): warning C4996: 'std::_Copy_impl': Function call with parameters that may be unsafe - this call relies on the caller to check that the passed values are correct. To disable this warning, use -D_SCL_SECURE_NO_WARNINGS. See documentation on how to use Visual C++ 'Checked Iterators' 1> c:\program files (x86)\microsoft visual studio 10.0\vc\include\xutility(2212) : see declaration of 'std::_Copy_impl' 1> c:\boost_1_47_0\boost\algorithm\string\detail\classification.hpp(102) : see reference to function template instantiation '_OutIt std::copy<const char*,char*>(_InIt,_InIt,_OutIt)' being compiled 1> with 1> [ 1> _OutIt=char *, 1> _InIt=const char * 1> ] 1> c:\boost_1_47_0\boost\algorithm\string\classification.hpp(206) : see reference to function template instantiation 'boost::algorithm::detail::is_any_ofF<CharT>::is_any_ofF<boost::iterator_range<IteratorT>>(const RangeT &)' being compiled 1> with 1> [ 1> CharT=char, 1> IteratorT=const char *, 1> RangeT=boost::iterator_range<const char *> 1> ] 1> d:\workspace\papafactory\develop\boost.string.split\main.cpp(15) : see reference to function template instantiation 'boost::algorithm::detail::is_any_ofF<CharT> boost::algorithm::is_any_of<const char[3]>(RangeT (&))' being compiled 1> with 1> [ 1> CharT=char, 1> RangeT=const char [3] 1> ] 1>c:\boost_1_47_0\boost\range\concepts.hpp(140): error C2146: syntax error : missing ',' before identifier 'traversal_category' 1> c:\boost_1_47_0\boost\concept\detail\has_constraints.hpp(42) : see reference to class template instantiation 'boost::range_detail::SinglePassIteratorConcept<Iterator>' being compiled 1> with 1> [ 1> Iterator=std::_String_iterator<char,std::char_traits<char>,std::allocator<char>> 1> ] 1> c:\boost_1_47_0\boost\concept\detail\msvc.hpp(53) : see reference to class template instantiation 'boost::concepts::not_satisfied<Model>' being compiled 1> with 1> [ 1> Model=boost::range_detail::SinglePassIteratorConcept<std::_String_iterator<char,std::char_traits<char>,std::allocator<char>>> 1> ] 1> c:\boost_1_47_0\boost\range\concepts.hpp(259) : see reference to class template instantiation 'boost::concepts::require<Model>' being compiled 1> with 1> [ 1> Model=boost::range_detail::SinglePassIteratorConcept<std::_String_iterator<char,std::char_traits<char>,std::allocator<char>>> 1> ] 1> c:\boost_1_47_0\boost\concept\detail\has_constraints.hpp(42) : see reference to class template instantiation 'boost::SinglePassRangeConcept<T>' being compiled 1> with 1> [ 1> T=const boost::iterator_range<std::_String_iterator<char,std::char_traits<char>,std::allocator<char>>> 1> ] 1> c:\boost_1_47_0\boost\concept\detail\msvc.hpp(53) : see reference to class template instantiation 'boost::concepts::not_satisfied<Model>' being compiled 1> with 1> [ 1> Model=boost::SinglePassRangeConcept<const boost::iterator_range<std::_String_iterator<char,std::char_traits<char>,std::allocator<char>>>> 1> ] 1> c:\boost_1_47_0\boost\range\algorithm\equal.hpp(162) : see reference to class template instantiation 'boost::concepts::require<Model>' being compiled 1> with 1> [ 1> Model=boost::SinglePassRangeConcept<const boost::iterator_range<std::_String_iterator<char,std::char_traits<char>,std::allocator<char>>>> 1> ] 1> c:\boost_1_47_0\boost\range\iterator_range_core.hpp(434) : see reference to function template instantiation 'bool boost::range::equal<boost::iterator_range<IteratorT>,boost::iterator_range<IteratorT>>(const SinglePassRange1 &,const SinglePassRange2 &)' being compiled 1> with 1> [ 1> IteratorT=std::_String_iterator<char,std::char_traits<char>,std::allocator<char>>, 1> SinglePassRange1=boost::iterator_range<std::_String_iterator<char,std::char_traits<char>,std::allocator<char>>>, 1> SinglePassRange2=boost::iterator_range<std::_String_iterator<char,std::char_traits<char>,std::allocator<char>>> 1> ] 1> c:\boost_1_47_0\boost\algorithm\string\find_iterator.hpp(328) : see reference to function template instantiation 'bool boost::operator ==<IteratorT,IteratorT>(const boost::iterator_range<IteratorT> &,const boost::iterator_range<IteratorT> &)' being compiled 1> with 1> [ 1> IteratorT=std::_String_iterator<char,std::char_traits<char>,std::allocator<char>> 1> ] 1> c:\boost_1_47_0\boost\algorithm\string\find_iterator.hpp(322) : while compiling class template member function 'bool boost::algorithm::split_iterator<IteratorT>::equal(const boost::algorithm::split_iterator<IteratorT> &) const' 1> with 1> [ 1> IteratorT=input_iterator_type 1> ] 1> c:\program files (x86)\microsoft visual studio 10.0\vc\include\xutility(373) : see reference to class template instantiation 'boost::algorithm::split_iterator<IteratorT>' being compiled 1> with 1> [ 1> IteratorT=input_iterator_type 1> ] 1> c:\boost_1_47_0\boost\iterator\transform_iterator.hpp(49) : see reference to class template instantiation 'std::iterator_traits<_Iter>' being compiled 1> with 1> [ 1> _Iter=find_iterator_type 1> ] 1> c:\boost_1_47_0\boost\iterator\transform_iterator.hpp(75) : see reference to class template instantiation 'boost::detail::transform_iterator_base<UnaryFunc,Iterator,Reference,Value>' being compiled 1> with 1> [ 1> UnaryFunc=copy_range_type, 1> Iterator=find_iterator_type, 1> Reference=boost::use_default, 1> Value=boost::use_default 1> ] 1> c:\boost_1_47_0\boost\algorithm\string\iter_find.hpp(168) : see reference to class template instantiation 'boost::transform_iterator<UnaryFunc,Iterator>' being compiled 1> with 1> [ 1> UnaryFunc=copy_range_type, 1> Iterator=find_iterator_type 1> ] 1> c:\boost_1_47_0\boost\algorithm\string\split.hpp(149) : see reference to function template instantiation 'SequenceSequenceT &boost::algorithm::iter_split<SequenceSequenceT,RangeT,boost::algorithm::detail::token_finderF<PredicateT>>(SequenceSequenceT &,RangeT &,FinderT)' being compiled 1> with 1> [ 1> SequenceSequenceT=split_vector_type, 1> RangeT=std::string, 1> PredicateT=boost::algorithm::detail::is_any_ofF<char>, 1> FinderT=boost::algorithm::detail::token_finderF<boost::algorithm::detail::is_any_ofF<char>> 1> ] 1> d:\workspace\p\develop\boost.string.split\main.cpp(15) : see reference to function template instantiation 'SequenceSequenceT &boost::algorithm::split<split_vector_type,std::string,boost::algorithm::detail::is_any_ofF<CharT>>(SequenceSequenceT &,RangeT &,PredicateT,boost::algorithm::token_compress_mode_type)' being compiled 1> with 1> [ 1> SequenceSequenceT=split_vector_type, 1> CharT=char, 1> RangeT=std::string, 1> PredicateT=boost::algorithm::detail::is_any_ofF<char> 1> ] 1>c:\boost_1_47_0\boost\range\concepts.hpp(140): error C2065: 'traversal_category' : undeclared identifier 1>c:\boost_1_47_0\boost\range\concepts.hpp(140): error C2146: syntax error : missing ',' before identifier 'traversal_category' 1>c:\boost_1_47_0\boost\range\concepts.hpp(140): error C2065: 'traversal_category' : undeclared identifier 1>c:\boost_1_47_0\boost\range\concepts.hpp(140): error C2893: Failed to specialize function template 'boost::concepts::require<Model> boost::concepts::require_(void (*)(Model))' 1> With the following template arguments: 1> 'boost::Convertible' 1>c:\boost_1_47_0\boost\range\concepts.hpp(140): error C2056: illegal expression ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

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Linking error in boost program options under Windows
by Marc de Kamps 20 Jul '11

20 Jul '11

I'm linking to boost programming options under windows. I get the following linker error: miind.obj : error LNK2001: unresolved external symbol "public: static unsigned int const boost::program_options::options_description::m_default_line_length" I am using the BoostPro installer version for boost 1.47 under windows XP using Visual Studio 10. I link against: boost_program_options-vc100-mt-gd-1_47.lib in Debug mode. If I don't link against it I get a lot more missing symbols, so it's not simply a matter of forgetting to the boost program options library. The problem occurs in the Debug and Release version. The same code compiles under Linux. Marc

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hardware interfaces
by Kraus Philipp 20 Jul '11

20 Jul '11

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello, is there any support within Boost for USB devices or anything else? I've found that the ASIO can handle with serial ports (and network interfaces) but my primary question is there a support for other devices ? Thanks a lot Phil -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org iEYEARECAAYFAk4mogUACgkQ6s0Ua5LeGumdHQCdGQrR/YXnio/cvWtHhRBGbUGz k5gAmweGD3Him5X+b8VIsTzYC/pN/cok =+Dhx -----END PGP SIGNATURE-----

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thread safe queue
by Sean Farrow 20 Jul '11

20 Jul '11

Hi: Has anyone written or does anyone know of a thread safe queue that uses boost to allow it to be cross platform? Cheers Sean.

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c2248 with a queue!
by Sean Farrow 20 Jul '11

20 Jul '11

Hi: I'm using a queue written I think as I remember by Antony Williams (sorry if this is incorrect but it was certainly someone in the uk). The code is below, I'm getting 2 c2248 errors indicated by visual c++ 2010 at the last line of the class i.e the line with }; Does anyone know what's causing this? The errors are: 1>d:\dropbox\mackie display reader\surface reader\surface reader\queue.hpp(18): error C2248: 'boost::mutex::mutex' : cannot access private member declared in class 'boost::mutex' c:\program files\boost\boost\thread\win32\mutex.hpp(26) : see declaration of 'boost::mutex::mutex' c:\program files\boost\boost\thread\win32\mutex.hpp(22) : see declaration of 'boost::mutex' This diagnostic occurred in the compiler generated function 'concurrent_queue<Data>::concurrent_queue(concurrent_queue<Data> &)' with [ Data=PmEvent ] 1>d:\dropbox\mackie display reader\surface reader\surface reader\queue.hpp(18): error C2248: 'boost::condition_variable::condition_variable' : cannot access private member declared in class 'boost::condition_variable' c:\program files\boost\boost\thread\win32\condition_variable.hpp(299) : see declaration of 'boost::condition_variable::condition_variable' c:\program files\boost\boost\thread\win32\condition_variable.hpp(295) : see declaration of 'boost::condition_variable' This diagnostic occurred in the compiler generated function 'concurrent_queue<Data>::concurrent_queue(concurrent_queue<Data> &)' with [ Data=PmEvent ] PmEvent is just a standard c structure: typedef struct { PmMessage message; PmTimestamp timestamp; } PmEvent; PmTimestamp and PmMessage are defined as: typedef int32_t PmMessage/PmTimeStamp; any help appreciated. Cheers Sean. --begin code- #include <queue> #include <boost/thread/mutex.hpp> #include <boost/thread/condition_variable.hpp> template <typename Data> class concurrent_queue { private: boost::mutex the_mutex; boost::condition_variable the_condition_variable; std::queue<Data> the_data; public: void push(Data const& data) { boost::mutex::scoped_lock lock(the_mutex); the_queue.push(data); lock.unlock(); the_condition_variable.notify_one(); } }; --end code--

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Integer vs. Double values for link weights in Graph
by Jens Buysse 20 Jul '11

20 Jul '11

Dear all, I'm new to the BOOST library (and actually also to c++). I have the following problem: I want to use the dijkstra algorithm for computing shortest paths in a network. For this I calculate weights, which in my case take the form of double < 1. But it seems internally boost converts to an integer. Is there a way to use double without miltilplying it with e.g. 100 to get Integers? Kind regards Jens Buysse -- Jens Buysse Research Group Broadband Communication Networks (IBCN) Department of Information Technology (INTEC), Ghent University/ IBBT Gaston Crommenlaan 8 bus 201, B-9050 Gent, Belgium tel : +32 9 33 14 942 fax : +32 9 33 14 899 mobile : +32 479 32 21 72 e-mail : jens.buysse(a)intec.ugent.be skype : jens.buysse web : http://ibcn.intec.ugent.be/ web : www.myspace.com/aratf

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Implementing Range Adaptor or "transformation" iterator
by John M. Dlugosz 20 Jul '11

20 Jul '11

I see the documentation "doc/html/range/reference/extending/method_3/method_3_1.html" and want to do something like that. The Adaptor I want to write will transform the elements and provide a lazy transformed view. So, I need the return range to be a pair of transformed iterators, and a transform iterator works just like the underlying iterator only the * operator will apply my function to the value as it fetches it. But, it seems to me that there should be something like that already. Is there something I'm overlooking in STL or in some other Boost library? Thanks, —John

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[fusion] adapted std::pair and ostream
by Daniel James 20 Jul '11

20 Jul '11

Hi The docs: http://www.boost.org/doc/libs/1_47_0/libs/fusion/doc/html/fusion/adapted/st… seem to suggest that one can pipe an adapted std::pair 'directly' to cout. I find the following though: #include <iostream> #include <boost/fusion/adapted.hpp> // adapt pair. #include <boost/fusion/sequence.hpp> // operator<<() ? #include <boost/fusion/container.hpp> // as_vector int main(int argc, char** argv) { std::pair<std::string, int> p("foo", 7); std::cout << p << std::endl; // does not compile although docs suggest it should. std::cout << boost::fusion::as_vector(p) << std::endl; // compiles and works as expected. return 0; } Am I missing an include? Is sending to cout without first using as_vector actually supported? Daniel

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