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[JOB OFFER] - Engineer/Post-doctoral Fellow Position at University Paris XI
by Joel Falcou 18 Jun '09

18 Jun '09

While hoping it is not spam. As the job offer ma include large use of boost library, I post this here for anyone that may be interested. Don't hesitate to forward this to whoever you want. Context: The PARALL team at LRI is looking for a qualified post-doctoral researcher or computer science engineer with experience in C++ and GPU Programming to take part in a DIGITEO research project. Activities: After a phase of bibliography and state of the art analysis, the recruited fellow will … [View More]

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Linker error on linux...
by Ozgur Ozturk 18 Jun '09

18 Jun '09

Hi, Thanks to Mr Watanabe, it compiled on Windows. Now I am trying to compile on Linux. I was hoping things would be easier because of package managers. The package manager installed headers into /usr/include/boost and libs into /usr/lib/ (found out from YAST) When I try to compile the same example<http://www.boost.org/doc/libs/1_39_0/doc/html/boost_asio/example/chat/chat_…>with (c++ -I /usr/include/ chat_server.cpp -o chat_server) I get errors. I guess I should also specify … [View More]

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[boost.python] Unable to compile tutorial example
by TheLonelyStar 18 Jun '09

18 Jun '09

Hi, I am under Linux, ubunut 8.04 LTS and have no admin rights. Here boost 1.34 ist installed. This is my user-conifg.jam: #gcc config using gcc : gcc : /usr/bin/gcc ; # Python configuration using python : 2.5 : /usr ; I am trying to get the tutorial example compiled, as described here: http://www.boost.org/doc/libs/1_39_0/libs/python/doc/tutorial/doc/html/pyth… But I get this: bjam /export/home/nhuesken/boost.python/boost_1_34_0/Jamfile.v2:341: in load-aux rule path.glob-tree unknown in … [View More]

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[docs] Meaning of right/left arrows
by Robert Jones 18 Jun '09

18 Jun '09

A few libraries (eg. fusion) have sufficiently complicated (and thorough) documentation that they have sections, sub-sections, and maybe sub-sub-sections. In that case I instinctively expect that the arrow right at the top right of the page will take me to the next sections, or sub-sections (ie the next peer of the page I'm looking at), whereas in fact it always takes me to the next page. Does anyone else consider this is not quite right, and is it worth changing it? - Rob.

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Re: [Boost-users] [ptr_container] ptr_map and MinGW: "a declaration of assert must be available", even with cassert included
by philipp_muenzel＠web.de 18 Jun '09

18 Jun '09

Hi, the error originates from various headers that ptr_map includes. This is the whole output from gcc, perhaps it helps: g++ -c -g -Wall -fno-exceptions -fno-rtti -I"c:\boost_1_39_0" - I"." -o release\datacontainer.o datacontainer. cpp In file included from c:/boost_1_39_0/boost/scoped_array.hpp:14, from c:/boost_1_39_0/boost/ptr_container/detail/scoped_deleter. hpp:21, from c:/boost_1_39_0/boost/ptr_container/detail/reversible_ptr_ container.hpp:21, … [View More] from c:/boost_1_39_0/boost/ptr_container/detail/associative_ptr _container.hpp:20, from c:/boost_1_39_0/boost/ptr_container/ptr_map_adapter.hpp:20 , from c:/boost_1_39_0/boost/ptr_container/ptr_map.hpp:20, from datacontainer.h:29, from datacontainer.cpp:21: c:/boost_1_39_0/boost/smart_ptr/scoped_array.hpp: In member function `T& boost:: scoped_array<T>::operator[](ptrdiff_t) const': c:/boost_1_39_0/boost/smart_ptr/scoped_array.hpp:80: error: there are no argumen ts to `assert' that depend on a template parameter, so a declaration of `assert' must be available c:/boost_1_39_0/boost/smart_ptr/scoped_array.hpp:80: error: (if you use `-fpermi ssive', G++ will accept your code, but allowing the use of an undeclared name is deprecated) In file included from c:/boost_1_39_0/boost/ptr_container/detail/reversible_ptr_ container.hpp:21, from c:/boost_1_39_0/boost/ptr_container/detail/associative_ptr _container.hpp:20, from c:/boost_1_39_0/boost/ptr_container/ptr_map_adapter.hpp:20 , from c:/boost_1_39_0/boost/ptr_container/ptr_map.hpp:20, from datacontainer.h:29, from datacontainer.cpp:21: c:/boost_1_39_0/boost/ptr_container/detail/scoped_deleter.hpp: In constructor `b oost::ptr_container_detail::scoped_deleter<T, CloneAllocator>::scoped_deleter(si ze_t)': c:/boost_1_39_0/boost/ptr_container/detail/scoped_deleter.hpp:47: error: there a re no arguments to `assert' that depend on a template parameter, so a declaratio n of `assert' must be available c:/boost_1_39_0/boost/ptr_container/detail/scoped_deleter.hpp: In constructor `b oost::ptr_container_detail::scoped_deleter<T, CloneAllocator>::scoped_deleter(si ze_t, const T&)': c:/boost_1_39_0/boost/ptr_container/detail/scoped_deleter.hpp:58: error: there a re no arguments to `assert' that depend on a template parameter, so a declaratio n of `assert' must be available c:/boost_1_39_0/boost/ptr_container/detail/scoped_deleter.hpp: In constructor `b oost::ptr_container_detail::scoped_deleter<T, CloneAllocator>::scoped_deleter(In putIterator, InputIterator)': c:/boost_1_39_0/boost/ptr_container/detail/scoped_deleter.hpp:71: error: there a re no arguments to `assert' that depend on a template parameter, so a declaratio n of `assert' must be available In file included from c:/boost_1_39_0/boost/ptr_container/detail/reversible_ptr_ container.hpp:24, from c:/boost_1_39_0/boost/ptr_container/detail/associative_ptr _container.hpp:20, from c:/boost_1_39_0/boost/ptr_container/ptr_map_adapter.hpp:20 , from c:/boost_1_39_0/boost/ptr_container/ptr_map.hpp:20, from datacontainer.h:29, from datacontainer.cpp:21: c:/boost_1_39_0/boost/ptr_container/clone_allocator.hpp: In function `T* boost:: new_clone(const T&)': c:/boost_1_39_0/boost/ptr_container/clone_allocator.hpp:35: error: cannot use ty peid with -fno-rtti c:/boost_1_39_0/boost/ptr_container/clone_allocator.hpp:35: error: cannot use ty peid with -fno-rtti c:/boost_1_39_0/boost/ptr_container/clone_allocator.hpp:35: error: there are no arguments to `assert' that depend on a template parameter, so a declaration of ` assert' must be available In file included from c:/boost_1_39_0/boost/ptr_container/detail/associative_ptr _container.hpp:20, from c:/boost_1_39_0/boost/ptr_container/ptr_map_adapter.hpp:20 , from c:/boost_1_39_0/boost/ptr_container/ptr_map.hpp:20, from datacontainer.h:29, from datacontainer.cpp:21: c:/boost_1_39_0/boost/ptr_container/detail/reversible_ptr_container.hpp: In stat ic member function `static typename Config::value_type* boost::ptr_container_det ail::reversible_ptr_container<Config, CloneAllocator>::null_clone_allocator<allo w_null_values>::allocate_clone(const typename Config::value_type*)': c:/boost_1_39_0/boost/ptr_container/detail/reversible_ptr_container.hpp:111: err or: cannot use typeid with -fno-rtti c:/boost_1_39_0/boost/ptr_container/detail/reversible_ptr_container.hpp:111: err or: cannot use typeid with -fno-rtti c:/boost_1_39_0/boost/ptr_container/detail/reversible_ptr_container.hpp:111: err or: there are no arguments to `assert' that depend on a template parameter, so a declaration of `assert' must be available In file included from c:/boost_1_39_0/boost/ptr_container/ptr_map_adapter.hpp:20 , from c:/boost_1_39_0/boost/ptr_container/ptr_map.hpp:20, from datacontainer.h:29, from datacontainer.cpp:21: c:/boost_1_39_0/boost/ptr_container/detail/associative_ptr_container.hpp: In mem ber function `void boost::ptr_container_detail::associative_ptr_container<Config , CloneAllocator>::multi_transfer(typename AssociatePtrCont::iterator, Associate PtrCont&)': c:/boost_1_39_0/boost/ptr_container/detail/associative_ptr_container.hpp:196: er ror: there are no arguments to `assert' that depend on a template parameter, so a declaration of `assert' must be available c:/boost_1_39_0/boost/ptr_container/detail/associative_ptr_container.hpp: In mem ber function `typename boost::ptr_container_detail::reversible_ptr_container<Con fig, CloneAllocator>::size_type boost::ptr_container_detail::associative_ptr_con tainer<Config, CloneAllocator>::multi_transfer(typename AssociatePtrCont::iterat or, typename AssociatePtrCont::iterator, AssociatePtrCont&)': c:/boost_1_39_0/boost/ptr_container/detail/associative_ptr_container.hpp:208: er ror: there are no arguments to `assert' that depend on a template parameter, so a declaration of `assert' must be available c:/boost_1_39_0/boost/ptr_container/detail/associative_ptr_container.hpp: In mem ber function `bool boost::ptr_container_detail::associative_ptr_container<Config , CloneAllocator>::single_transfer(typename AssociatePtrCont::iterator, Associat ePtrCont&)': c:/boost_1_39_0/boost/ptr_container/detail/associative_ptr_container.hpp:229: er ror: there are no arguments to `assert' that depend on a template parameter, so a declaration of `assert' must be available c:/boost_1_39_0/boost/ptr_container/detail/associative_ptr_container.hpp: In mem ber function `typename boost::ptr_container_detail::reversible_ptr_container<Con fig, CloneAllocator>::size_type boost::ptr_container_detail::associative_ptr_con tainer<Config, CloneAllocator>::single_transfer(typename AssociatePtrCont::itera tor, typename AssociatePtrCont::iterator, AssociatePtrCont&)': c:/boost_1_39_0/boost/ptr_container/detail/associative_ptr_container.hpp:245: er ror: there are no arguments to `assert' that depend on a template parameter, so a declaration of `assert' must be available In file included from c:/boost_1_39_0/boost/ptr_container/ptr_map.hpp:20, from datacontainer.h:29, from datacontainer.cpp:21: c:/boost_1_39_0/boost/ptr_container/ptr_map_adapter.hpp: In member function `typ ename boost::ptr_container_detail::associative_ptr_container<boost::ptr_containe r_detail::map_config<T, VoidPtrMap, Ordered>, CloneAllocator>::const_reference b oost::ptr_container_detail::ptr_map_adapter_base<T, VoidPtrMap, CloneAllocator, Ordered>::lookup(const typename boost::ptr_container_detail::associative_ptr_con tainer<boost::ptr_container_detail::map_config<T, VoidPtrMap, Ordered>, CloneAll ocator>::key_type&) const': c:/boost_1_39_0/boost/ptr_container/ptr_map_adapter.hpp:176: error: there are no arguments to `assert' that depend on a template parameter, so a declaration of `assert' must be available datacontainer.cpp: In member function `bool DataContainer::addRequestedData(uint 32_t, const std::string&)': datacontainer.cpp:91: warning: comparison between signed and unsigned integer ex pressions c:/boost_1_39_0/boost/ptr_container/detail/reversible_ptr_container.hpp: In stat ic member function `static void boost::ptr_container_detail::reversible_ptr_cont ainer<Config, CloneAllocator>::enforce_null_policy(const typename Config::value_ type*, const char*) [with Config = boost::ptr_container_detail::map_config<ICanD ataToSend, std::map<uint32_t, void*, std::less<uint32_t>, std::allocator<std::pa ir<const uint32_t, void*> > >, true>, CloneAllocator = boost::heap_clone_alloca tor]': c:/boost_1_39_0/boost/ptr_container/ptr_map_adapter.hpp:524: instantiated from `std::pair<typename boost::ptr_container_detail::ptr_map_adapter_base<T, VoidPt rMap, CloneAllocator, Ordered>::iterator, bool> boost::ptr_map_adapter<T, VoidPt rMap, CloneAllocator, Ordered>::insert_impl(const typename boost::ptr_container_ detail::ptr_map_adapter_base<T, VoidPtrMap, CloneAllocator, Ordered>::key_type&, typename boost::ptr_container_detail::ptr_map_adapter_base<T, VoidPtrMap, Clone Allocator, Ordered>::mapped_type) [with T = ICanDataToSend, VoidPtrMap = std::ma p<uint32_t, void*, std::less<uint32_t>, std::allocator<std::pair<const uint32_t, void*> > >, CloneAllocator = boost::heap_clone_allocator, bool Ordered = true] ' c:/boost_1_39_0/boost/ptr_container/ptr_map_adapter.hpp:550: instantiated from `std::pair<typename boost::ptr_container_detail::ptr_map_adapter_base<T, VoidPt rMap, CloneAllocator, Ordered>::iterator, bool> boost::ptr_map_adapter<T, VoidPt rMap, CloneAllocator, Ordered>::insert(typename boost::ptr_container_detail::ptr _map_adapter_base<T, VoidPtrMap, CloneAllocator, Ordered>::key_type&, typename b oost::ptr_container_detail::ptr_map_adapter_base<T, VoidPtrMap, CloneAllocator, Ordered>::mapped_type) [with T = ICanDataToSend, VoidPtrMap = std::map<uint32_t, void*, std::less<uint32_t>, std::allocator<std::pair<const uint32_t, void*> > > , CloneAllocator = boost::heap_clone_allocator, bool Ordered = true]' datacontainer.cpp:124: instantiated from here c:/boost_1_39_0/boost/ptr_container/detail/reversible_ptr_container.hpp:264: err or: `assert' was not declared in this scope c:/boost_1_39_0/boost/ptr_container/detail/reversible_ptr_container.hpp:264: war ning: unused variable 'assert' mingw32-make[1]: *** [release/datacontainer.o] Error 1 > -----Ursprüngliche Nachricht----- > philipp_muenzel(a)web.de skrev: > > Hello, > > > > I'm using boost::ptr_map successfully on Linux, compiling with gcc 4.3.2. > > However, now i tried the same code on Windows XP, using MinGW with gcc 3.4.5 i get the following error: > > "error: there are no arguments to 'assert' that depend on a template parameter, so a declaration of 'assert' must be available". > > > > I had exactly the same error on Linux, there i put a #include <cassert> before the #include to boost::ptr_map and everything worked. > > But on windows, i tried #include <cassert> and #include <assert.h>, also a > > #include <cassert> > > #ifndef assert > > #define assert assert > > #endif > > in case something was messing with the name. > > I tried version 1.39 and 1.37 on windows and the result is the same. > > > > I also carefully inspected the headers i also include, suspecting some might #define an include-guard that confuses with assert. > > > > No luck yet and I'm out of ideas now. > > > > Any ideas are greatly appreciated. > > Hm. I have no idea, actually. I tried to grep for assert in the source > without any luck :-( > > Are the ptr container headers the only headers that you include? > > -Thorsten > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users > ___________________________________________________________________ WEB.DE FreeDSL Komplettanschluss mit DSL 6.000 Flatrate und Telefonanschluss für 17,95 Euro/mtl.! http://produkte.web.de/go/02/ [View Less]

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[ptr_container] ptr_map and MinGW: "a declaration of assert must be available", even with cassert included
by philipp_muenzel＠web.de 18 Jun '09

18 Jun '09

Hello, I'm using boost::ptr_map successfully on Linux, compiling with gcc 4.3.2. However, now i tried the same code on Windows XP, using MinGW with gcc 3.4.5 i get the following error: "error: there are no arguments to 'assert' that depend on a template parameter, so a declaration of 'assert' must be available". I had exactly the same error on Linux, there i put a #include <cassert> before the #include to boost::ptr_map and everything worked. But on windows, i tried #include <cassert… [View More]

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Boost: Regex - XML
by Etienne Philip Pretorius 18 Jun '09

18 Jun '09

Just a general question, Could one use Boost.Regex to build a Well-Formed and Validating XML parser whose view is iterators to elements inside the XML document? In other words, create a class that acts like an XML parser so that you may derive from it to say create a XMPP class? Etienne

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BOOST_FOREACH question
by Zachary Turner 18 Jun '09

18 Jun '09

Suppose I've got a concrete instance C of some class, and a pair of iterators X and Y representing a range [X, Y). I want to do the following: int a, b, c; while (X != Y) { C.foo(*X, a, b, c); ++X; } I can type it out like that, but actually X and Y are zip_iterators, and it's hard for me to figure out how to parameterize the zip_iterator to instantiate it. I tried the following: class EncoderService { boost::asio::io_service work_io_service_; void async_encode(std::vector<… [View More]

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[Q] help serializing a multiset of shared ptrs
by V S P 17 Jun '09

17 Jun '09

Hello, I am sure I am not doing things quite right in serializing my multiset, however I could not 'connect the dots' in the serialize documentation between serializing shared pointers and containers. Therefore, asking for help. I created a complete compilable example, that I am attaching below and the created output file. The program crashes on the last line when I am trying to load the data back in. Any help is greatly appreciated, Vlad -------------- prog start ---------------- #include … [View More]<iostream> #include <fstream> #include <ostream> #include <ctime> #include <cstdlib> #include <set> #include <algorithm> #include <boost/archive/tmpdir.hpp> #include <boost/archive/text_iarchive.hpp> #include <boost/archive/text_oarchive.hpp> #include <boost/serialization/base_object.hpp> #include <boost/serialization/utility.hpp> #include <boost/serialization/list.hpp> #include <boost/serialization/assume_abstract.hpp> #include <boost/serialization/base_object.hpp> #include <boost/serialization/nvp.hpp> #include <boost/archive/tmpdir.hpp> #include <boost/archive/xml_oarchive.hpp> #include <boost/archive/xml_iarchive.hpp> #include <boost/lexical_cast.hpp> using namespace std; using namespace boost; template <typename TRow, typename TContainer=std::multiset< shared_ptr<TRow> > > struct cactivetable_t: public TContainer, private boost::noncopyable { template <typename Archive> void serialize (Archive& ar, const unsigned int version) { for (TContainer::const_iterator it=begin(); it!=end();it++) { (*it)->myserialize(ar,version); } } }; struct tRow { int a; string b; template <typename Archive> void myserialize (Archive& ar, const unsigned int version) { ar&boost::serialization::make_nvp("a", a); ar&boost::serialization::make_nvp("b", b); } }; struct randrow { shared_ptr<tRow> operator()(void) { shared_ptr<tRow> p(new tRow); p->a=rand()%100; p->b=lexical_cast<string>(p->a); return p; } }; void main (void) { cactivetable_t<tRow> mytb; shared_ptr<tRow> tmpP(new tRow); for (size_t i=0;i<10;i++) { /*note for multiset we can insert the same thing many times */ mytb.insert(tmpP); } randrow rw; generate(mytb.begin(),mytb.end(),rw); // make an archive { ofstream ofs("xyz.sxml"); assert(ofs.good()); boost::archive::xml_oarchive oa(ofs); oa<<BOOST_SERIALIZATION_NVP(mytb); }//scope to close file cout<<"finished serializing, now lets try to read back"<<endl; mytb.clear(); { // open the archive std::ifstream ifs("xyz.sxml"); assert(ifs.good()); boost::archive::xml_iarchive ia(ifs); // restore the schedule from the archive ia >> BOOST_SERIALIZATION_NVP(mytb); } cout<<"after restore tb size is: "<<mytb.size()<<endl; } -------------- prog end ------------------- -- archive xyz.sxml XML start ---- <?xml version="1.0" encoding="UTF-8" standalone="yes" ?> <!DOCTYPE boost_serialization> <boost_serialization signature="serialization::archive" version="5"> <mytb class_id="0" tracking_level="0" version="0"> <a>41</a> 41 <a>67</a> 67 <a>34</a> 34 <a>0</a> 0 <a>69</a> 69 <a>24</a> 24 <a>78</a> 78 <a>58</a> 58 <a>62</a> 62 <a>64</a> 64 </mytb> </boost_serialization> --- archive XML end ---- -- V S P toreason(a)fastmail.fm -- http://www.fastmail.fm - Access all of your messages and folders wherever you are [View Less]

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asio: serial ports and timeouts
by KessiMC 17 Jun '09

17 Jun '09

Hi again I was playing around with asio a bit, creating the following class: AsioPlayground::AsioPlayground() : maxCharDelay(seconds(10)), charTimeout(io, maxCharDelay), port(io, "COM2") { port.set_option(serial_port_base::baud_rate(9600)); port.set_option(serial_port_base::character_size(7)); port.set_option(serial_port_base::flow_control(serial_port_base::flow_control::none)); port.set_option(serial_port_base::parity(serial_port_base::parity::even)); port.set_option(… [View More]serial_port_base::stop_bits(serial_port_base::stop_bits::one)); } AsioPlayground::~AsioPlayground() { } template<> void AsioPlayground::write<string>(const string &value) { boost::asio::write(port, buffer(value, value.size())); } template<> void AsioPlayground::write<char>(const char &c) { boost::asio::write(port, buffer(&c, 1)); } template<> char AsioPlayground::read<char>() { function<void(const error_code &)> onTimeout = bind(&AsioPlayground::onTimeout, this, _1); charTimeout.async_wait(onTimeout); function<void(const error_code &, size_t)> onSuccess = bind(&AsioPlayground::onSuccess, this, _1, _2); char input = '\0'; async_read(port, buffer(&input, 1), onSuccess); error_code ec; io.run(ec); return input; } string AsioPlayground::read(int numberOfCharacters) { string input; for (int i = 0; i < numberOfCharacters; ++i) { input.push_back(read<char> ()); } return input; } void AsioPlayground::onSuccess(const error_code &ec, size_t size) { charTimeout.cancel(); } void AsioPlayground::onTimeout(const error_code &ec) { if (ec != error::operation_aborted) { throw InterfaceTimeoutException("No response"); } } int AsioPlayground::main(const vector<string> &args) { AsioPlayground play; play.write<string> ("/?12345678!\r\n"); try { cout << "Reply: " << play.read(10) << endl; } catch (const InterfaceTimeoutException &ex) { cout << ex.what() << endl; } return 0; } Executing the main function should have an expected behaviour of writing the string to the other party, and reading at least 10 characters or failing with a timeout exception. The timeout is meant to work as a character delay, allowing a maximum of 10 seconds between each transmitted character before failing. The writing part works A-ok. The reading throws the expected exception if no characters are transmitted by the oppositing device. However, if I transmit 9 characters from the device, these characters are displayed, appended by a '\0' character (or whichever character I choose as default in read<char>()). io.run() seems to return immediately, not even waiting for any characters to be transmitted. Adding completion_conditions to async_read(), like transfer_all() or transfer_at_least(1) did not do the trick, either. What is going wrong here? Thanks for any suggestions and greeetz Pascal -- View this message in context: http://www.nabble.com/asio%3A-serial-ports-and-timeouts-tp24073127p24073127… Sent from the Boost - Users mailing list archive at Nabble.com. [View Less]

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Boost Trac/Subversion upgrade this Friday
by Doug Gregor 17 Jun '09

17 Jun '09

The Boost Trac and Subversion repository will be offline for a few hours this Friday, June 19th, while we upgrade to a new version of Trac. Mailing lists will not be affected. Here is the approximate down-time: Date: Friday June 19, 2009 Time: - 11:00am-2:00pm Pacific US time - 12:00pm-3:00pm Mountain US time - 1:00pm-4:00pm Central US time - 2:00pm-5:00am Eastern US time - 6:00pm-9:00pm GMT Cheers, - Doug

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Re: [Boost-users] [iostreams] filtering_istream not working as intended..
by mmocny 17 Jun '09

17 Jun '09

Hello all, I am running into some odd "quirks" of the filtering_istream in the boost::iostreams library. Perhaps I am just using it wrong, but all code compiles, and does _almost_ what I would expect it to. Example Code: #include <boost/iostreams/tee.hpp> #include <boost/iostreams/invert.hpp> #include <boost/iostreams/device/file.hpp> #include <boost/iostreams/filtering_stream.hpp> #include <iostream> int main() { boost::iostreams::file log_file("sample.txt"… [View More]

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using Boost.Interprocess with different compilers
by Dominik Holler 17 Jun '09

17 Jun '09

Hi, is it possible to communicate between multiple programs using Boost.Interprocess, if the programs are compiled with different compilers e.g. MSVS 7.1 and MinGw gcc 3.4.5 ? regards Dominik Holler

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[variant] Efficiency
by Olivier Tournaire 17 Jun '09

17 Jun '09

Hi all, I need to store in a class an object which type is within a predefined set. As I would like to avoid the overhead of virtual functions, I am wondering if variant could help me. Moreover, I would like to know what is the runtime cost of using such a type (instead of base class pointers), and the cost of the apply_visitor. Hope you could help. Regards, Olivier

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boost::serialization and PHP websites
by KessiMC 17 Jun '09

17 Jun '09

Hi everyone Currently, I'm using boost serialization for some of my configuration files (XML format). Some time ago, it became necessary to edit these files using a web interface in PHP. As I could not think of a suitable method to deserialize such an XML file to PHP (with all object references, etc.), I wrote a C++ program generating HTML code, allowing some simple configuration tasks. Even though this worked as a quick and dirty solution, I do not intend to support such a proprietary … [View More]

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[pool] Crash when attempting to call malloc (1.32)
by James Madison 17 Jun '09

17 Jun '09

I am experiencing a very rare crash with boost::pool, when attempting to call malloc(), using boost 1.32. Specifically: In the header: boost::object_pool<unsigned long long> m_cdPool; In the code in Thread 1: unsigned long long key* = m_cdPool.malloc(); In the code in Thread 2: random_structure->memoryPool->free(...); I am crashing on a call to simple_segregated_storage<unsigned int>::malloc() within boost, specifically in the following method, where at the end of the … [View More]

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pool allocator based on element type instead of size?
by Kenny Riddile 17 Jun '09

17 Jun '09

I've found myself wanting something similar to boost::fast_pool_allocator, but with the following syntax for releasing memory: using namespace boost; std::list< T, fast_pool_allocator<T> > myList; // Note that second template parameter is T, not sizeof(T). // Basically I guess I just want a pool per type, even if // two types have the same size. singleton_pool< fast_pool_allocator_tag, T >::release_memory(); Is there a reason why this isn't doable that I should know … [View More]

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[Q] boost::spirit BOOST_FUSION_ADAPT_STRUCT error
by V S P 17 Jun '09

17 Jun '09

Hello, I am attempting to parse FuncName(arg1,arg2,... argN) with Spirit, such that args are saved in a vector and func name is saved into a funct_nm I am just in the beginning of this (I have not learned yet how to construct a grammar that allows comma delimited args within braces ) But running into a compilation error on line (std::string, funct_nm) within BOOST_FUSION_ADAPT_STRUCT I am using mini_xml1.cpp as an example Would like to ask for help/pointers to resolve it. I want … [View More]

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Visual studio 2008 problem with linker or compiler (depending on release or debug version)...
by Ozgur Ozturk 16 Jun '09

16 Jun '09

Hi, I have installed boost libraries and headers using the installer from: http://www.boostpro.com/download Then in visual studio I create an empty c++ project and added the chat_server.cpp and chat_message.hpp code from http://www.boost.org/doc/libs/1_39_0/doc/html/boost_asio/examples.html (I wish there was a code download link by the way, I struggled some because of some characters introduced in copy paste) Then I added "C:\Program Files\boost\boost_1_38" to include directories and "C:\… [View More]

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Problem with boost::bind usage
by Zachary Turner 16 Jun '09

16 Jun '09

Is there a technical limitation preventing this from working? int __stdcall VirtualUnlock(void*, size_t); void f() { std::list<void*> locked_buffers; size_t size; std::for_each(locked_buffers.begin(), locked_buffers.end(), boost::bind(VirtualUnlock, boost::lambda::_1, size)); } Irrelevant code snipped for brevity. I get the error It complains about how it can't find F::result_type in bind_template.hpp line 15, with F = int (__stdcall*)(void*, size_t) If I … [View More]

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lambda::throw_exception fails
by KessiMC 16 Jun '09

16 Jun '09

Hi everyone Be it that this code is working: try { throw InterfaceTimeoutException(); } catch (const std::exception &ex) { cout << ex.what() << endl; } However, trying this: try { lambda::throw_exception(constructor<InterfaceTimeoutException> ())(); } catch (const std::exception &ex) { cout << ex.what() << endl; } ends up with my programm crashing (Exit code 3). What am I missing here? Thanks for any reply and best regards Pascal -- … [View More]

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Problem using boost::asio::ip::address::from_string
by Matheus Araújo Aguiar 16 Jun '09

16 Jun '09

Hello boost-users, I'm using boost::asio::ip::address in a client-server application and i'm having a strange behaviour when using the member method *from_string*. The method isn't working correctly(or doing any work at all), since after calling it, nothing changes. Bellow there's a code that reproduces the problem. #include <boost/asio.hpp> #include <iostream> int main() { char ip[15]; printf("type ip please\n"); std::cin >> ip; boost::asio::ip::address … [View More]

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Memory manager/allocator
by Daniele Barzotti 16 Jun '09

16 Jun '09

Hi, I'm sorry if the question goes in OT. I'm searching for a simple cross platform memory manager/allocator library/class to simply allocate/read/write blocks of memory. I googled around and I found some projects: http://code.google.com/p/stdext/ http://memory-mgr.sourceforge.net/ there is also boost.interprocess but I don't need its complexity. I'd like to know if there is a well-known and used one. Thanks in advance. Daniele.

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[BGL] List of edges as property type
by caligulaemperorofrome＠yahoo.com 16 Jun '09

16 Jun '09

I'm trying to add a "list of edges" as an edge property type like so. typedef adjacency_list < listS, vecS, directedS > Traits; typedef adjacency_list < listS, vecS, directedS, vertex_properties, property < edge_list_t, std::list<Traits::edge_descriptor>, edge_properties > > > graph_t; But the compiler says : error: ‘edge_list_t’ was not declared in this scope So I think I need to add edge_list_t to the set of property tags. I think … [View More]

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[Lambda] Compiler dependent error, can anyone explain?
by Robert Jones 15 Jun '09

15 Jun '09

Hi Peeps I have this cut down code example #include <vector> #include <map> #include <algorithm> #include <boost/shared_ptr.hpp> #include <boost/lambda/lambda.hpp> #include <boost/lambda/bind.hpp> template < typename Iter, typename Pred > bool any_of_if( Iter first, Iter last, Pred pred ) { return std :: find_if( first, last, pred ) != last; } struct A { }; bool fnOfA( const A & ); typedef std :: vector< boost :: shared_ptr< A > > … [View More]

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