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by Konstantin Ribel 18 Nov '11

18 Nov '11

2 2

Re: [Boost-users] recursive_variant map recursion / incomplete type error
by 乔志强 18 Nov '11

18 Nov '11

try #define BOOST_VARIANT_NO_FULL_RECURSIVE_VARIANT_SUPPORT MSVC++ 2010 and gcc maybe need this. ------------------------------ Message: 4 Date: Thu, 17 Nov 2011 11:10:27 +0100 From: "Bodmer Marc" <Marc.Bodmer(a)bystronic.com> To: <boost-users(a)lists.boost.org> Subject: [Boost-users] recursive_variant map recursion / incomplete type error Message-ID: <0456E5B751F6DB4A83688EED49C9CAF70E101094(a)CHNIS191.bystronic.metal.firm> Content-Type: text/plain; charset="utf-8" Hi I try to use boost::recursive_variant with a recursive std::map. There are several projects and examples on the internet using boost::recursive_variant exactly like I do and it seems to work there. But somehow I can not make it compile in my environment. I am using gcc 4.6.1 and boost 1.46.1. I've stripped my code down to this: ------------------------------------------------------------- #include <boost/variant.hpp> #include <map> typedef boost::make_recursive_variant< int, std::map<float, boost::recursive_variant_> >::type element; int main () { element i = 42; }

2 1

[foreach] #define foreach BOOST_FOREACH
by Joaquin M Lopez Munoz 18 Nov '11

18 Nov '11

In Boost.Foreach docs, the user is informed about the possibility to do #define foreach BOOST_FOREACH so as to improve readability, provided there's no collisions in her code with the name 'foreach'. I think this advise is extremely unfortunate, because the collision happens right within Boost.Foreach code itself, as it uses the namespace boost::foreach internally. This results in problems like the one described in http://lists.boost.org/boost-users/2011/11/71762.php I think the only viable fix is to rename boost::foreach as boost::foreach_ or something and assume backwards incompatibility (as for Boost.MultiIndex, I'd have no problem in syncing up), unless someone figures out a smarter workaround. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

4 3

[inteprocess] Using named_mutex on Windows 7
by Edward Diener 18 Nov '11

18 Nov '11

I wrote a program more than 3 years ago where I used boost::interprocess_named_mutex to protect more than one instance of the same process from running the same sequence of code at the same time. The program appears to run fine under Windows XP and Windows Vista but occasionally locks up waiting for the locked mutex to unlock on Windows 7. The code looks like this: ------------------------------------------------------------------- boost::interprocess::named_mutex cmutex(boost::interprocess::open_or_create_t(),"MyMutexName"); { boost::interprocess::scoped_lock<boost::interprocess::named_mutex> cscoped(cmutex); // Code here which must be run one at a time. } ------------------------------------------------------------------- Under Windows 7 the code occasionally hangs on the scoped_lock instantiation, which of course I can not have. I notice there is a file in the temporary directory ( TMP or TEMP environment variable ) which is being used by interprocess, and after that file is manually deleted, the program no longer hangs on the scoped_lock instantiation. Is there a reason for this problem on Windows 7 ? I know that Windows 7 has global and local named mutexes and only by prefacing a named mutex name with global\ is the mutex truly global. I do not know if this is causing the problem on Windows 7. It does seem as if something in the file in the temporary directory is telling inteprocess that "MyMutexName" is still locked when the hangup occurs, but I would have expected that when acoped_lock goes out of scope, it handles resetting that file to the correct state. I wonder if this has something to do with UAC/file permissions in Windows 7, where the process somehow can no longer write to the file in the temporary directory afte creating it. Is this a known interprocess problem, perhaps fixed in a later release ? I wrote my code before Windows 7 even came out, recompiled it for Windows 7, but did not update the version of Boost I was using ( Boost 1.35 ). Maybe I need to do that ? I would certainly be willing to do that if I knew that this was a problem with interprocess in Boost 1.35 that has subsequently been fixed in a later version of Boost.

1 0

Re: [Boost-users] Boost 1.48.0 Release Notice
by Tom Kent 18 Nov '11

18 Nov '11

> > Subject: Re: [Boost-users] Boost 1.48.0 Release Notice > From: Michael Jackson (imikejackson_at_[hidden]) > Date: 2011-11-16 10:27:18 > On 11/16/11 10:05 AM, in article > CAArKS8i9AtMcQhRtxt81LQZm4vTVeanhuhQLFgVBjahLv+oJxw_at_[hidden], "Tom > Kent" wrote: > >> Subject: [Boost-users] Boost 1.48.0 Release Notice > >> From: Beman Dawes (bdawes_at_[hidden]) > >> Date: 2011-11-16 07:33:06 > >> > >> Release 1.48.0 of the Boost C++ Libraries is now available. > >> These open-source libraries work well with the C++ Standard Library, > >> and are usable across a broad spectrum of applications. The Boost > >> license encourages both commercial and non-commercial use. > >> This release contains new libraries: Container, Locale, Move. Updated > >> libraries include: Asio, Chrono, Config, Fusion, Geometry, Graph, > >> Interprocess, Intrusive, Lexical cast, Math, MSM, Numeric Conversion, > >> Proto, Regex, Spirit, TypeTraits, Unordered, Wave, and more. For > >> details, including download links, see > >> http://www.boost.org/users/news/version_1_48_0 > >> You can also download directly from SourceForge: > >> http://sourceforge.net/projects/boost/files/boost/1.48.0/ > >> To install this release on your system, see > >> http://www.boost.org/doc/libs/release/more/getting_started/index.html > >> Thanks, > >> --The Boost release team > >> Beman Dawes > >> Daniel James > >> Eric Niebler > >> Rene Rivera > >> Vladimir Prus > > > > > > I've built windows libraries (vc8, vc9, vc10) for this (32 and 64 > > bit), if you want them, you can get them from my website: > > http://boost.teeks99.com > > Tom > What exact versions of each of those did you use? Were they > single/multi-threaded, Static/Shared... > Thanks > Mike Jackson I believe I have all the various combinations: mt, mt-gd, mt-s, s, sgd, mt dll, mg-gd dll Tom

1 0

4 link errors related to boost_thread_vc100_mt-1_47 libraries
by code 17 Nov '11

17 Nov '11

Hi Boost users, I built boost_thread_vc100_mt-1_47.lib and boost_thread_vc100_mt-1_47.dll successfully by using 1_47 source codes without changing any thing. When I used the libraries in my project, I got the following link errors: 1>boost_UT.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: static void __cdecl boost::thread::sleep(class boost::posix_time::ptime const &)" (__imp_?sleep@thread@boost@@SAXABVptime@posix_time@2@@Z) 1>boost_UT.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) private: static class boost::intrusive_ptr<struct boost::detail::thread_data_base> __cdecl boost::thread::make_thread_info(void (__cdecl*)(void))" (__imp_?make_thread_info@thread@boost@@CA?AV?$intrusive_ptr@Uthread_data_base@detail@boost@@@2@P6AXXZ@Z) 1>boost_UT.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) void __cdecl boost::detail::free_raw_heap_memory(void *)" (__imp_?free_raw_heap_memory@detail@boost@@YAXPAX@Z) 1>boost_UT.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) void * __cdecl boost::detail::allocate_raw_heap_memory(unsigned int)" (__imp_?allocate_raw_heap_memory@detail@boost@@YAPAXI@Z) Can somebody kindly help me figure out a solution to fix them? Thank you Yan My working environment: Windows 7 + Visual Studio VC++10.

3 5

Boost 1.48.0 Release Notice
by Beman Dawes 17 Nov '11

17 Nov '11

Release 1.48.0 of the Boost C++ Libraries is now available. These open-source libraries work well with the C++ Standard Library, and are usable across a broad spectrum of applications. The Boost license encourages both commercial and non-commercial use. This release contains new libraries: Container, Locale, Move. Updated libraries include: Asio, Chrono, Config, Fusion, Geometry, Graph, Interprocess, Intrusive, Lexical cast, Math, MSM, Numeric Conversion, Proto, Regex, Spirit, TypeTraits, Unordered, Wave, and more. For details, including download links, see http://www.boost.org/users/news/version_1_48_0 You can also download directly from SourceForge: http://sourceforge.net/projects/boost/files/boost/1.48.0/ To install this release on your system, see http://www.boost.org/doc/libs/release/more/getting_started/index.html Thanks, --The Boost release team Beman Dawes Daniel James Eric Niebler Rene Rivera Vladimir Prus

2 1

Re: [Boost-users] [variant] declaring recursive variants (Jerry Jeremiah)
by 乔志强 17 Nov '11

17 Nov '11

MS Visual Studio 2010 SP1 compiled OK. But if use gcc, boost::variant<T> use boost:: sizeof_<T> and boost:: alignment_of <T>, and use sizeof(T), so need a complete type. Maybe gcc bug or bug of boost for gcc ? So you need workaround between // ADD THESE begin //////////// and // ADD THESE end ////////////, see next: //////////////////////////////////////////// template< typename BOOST_MPL_AUX_NA_PARAM(T) > struct sizeof_ : mpl::size_t< sizeof(T) > { BOOST_MPL_AUX_LAMBDA_SUPPORT(1,sizeof_,(T)) }; ./boost/variant/variant.hpp:1105:17: instantiated from 'boost::variant<std::basic_string<char>, long double, message_iter, config_iter>' .\main.cpp:40:31: instantiated from here ./boost/mpl/sizeof.hpp:28:1: error: invalid application of 'sizeof' to incomplete type 'message_iter' In file included from ./boost/aligned_storage.hpp:20:0, from ./boost/variant/variant.hpp:41, from ./boost/variant.hpp:17, from .\main.cpp:8: ./boost/type_traits/alignment_of.hpp: In instantiation of 'const size_t boost::detail::alignment_of_impl<message_iter>::value': //////////////////////////////////////////// #include <boost/variant.hpp> #include <string> #include <vector> #include <list> #include <map> struct message_iter; struct config_iter; // ADD THESE begin //////////// typedef std::map<std::string,int>::iterator any_map_iterator; namespace boost { namespace mpl { template<> struct sizeof_<message_iter> : sizeof_<any_map_iterator> { }; template<> struct sizeof_<config_iter> : sizeof_<any_map_iterator> { }; } template<> struct alignment_of<message_iter> : alignment_of<any_map_iterator> { }; template<> struct alignment_of<config_iter> : alignment_of<any_map_iterator> { }; } // ADD THESE end //////////// typedef boost::variant<std::string ,long double ,message_iter ,config_iter > var; typedef std::vector<var> value; typedef std::map<std::string,value> message; typedef std::map<std::string,message> config; struct config_iter { config_iter(const config::iterator iter) : iter_(iter) {} operator config::iterator() const { return iter_; } config::iterator operator() () const { return iter_; } bool operator == (const config_iter & other) const { return iter_ == other.iter_; } protected: config::iterator iter_; }; struct message_iter { message_iter(const message::iterator iter) : iter_(iter) {} operator message::iterator() const { return iter_; } message::iterator operator() () const { return iter_; } bool operator == (const message_iter & other) const { return iter_ == other.iter_; } protected: message::iterator iter_; }; // ADD THESE begin //////////// BOOST_STATIC_ASSERT(sizeof(config_iter) == sizeof(message_iter)); BOOST_STATIC_ASSERT(sizeof(config_iter) == sizeof(any_map_iterator)); // ADD THESE end //////////// struct identifier { identifier() : name_(""), version_(0) { // std::cout << "identifier::identifier()" << std::endl; } identifier(const std::string & name, const value & version) : name_(name), version_(version) { // std::cout << "identifier::identifier(" << name << "," << version << ")" << std::endl; } bool operator == (const identifier & other) const { return name_ == other.name_ && version_ == other.version_; } private: // updated by constructor std::string name_; value version_; }; int main() { return 0; } -----邮件原件----- 发件人: Jerry Jeremiah [mailto:Jerry.Jeremiah@telecom.co.nz] 发送时间: 2011年11月17日 17:33 收件人: 乔志强主题: RE: [variant] declaring recursive variants (Jerry Jeremiah) Thanks for taking the time to look at it. I appreciate that. If you read down a little farther you will see that I do that and it complains that config_iter isn't a complete type. And there is no way to get rid of that without removing all the "unrelated" classes. Can you figure out how to get the program right at the bottom to compile? Even adding the operator== to all the classes doesn't help... Thanks for all the help, Jerry

2 1

[ublas]how to get tsm to compile with simple matrix args?
by Larry Evans 17 Nov '11

17 Nov '11

Compilation of the attached file with gcc4.7 produces obscure output: /home/evansl/download/gcc/4.7-20111008/install/bin/g++ -c -Wall -ftemplate-depth-300 -O0 -g3 -fno-inline -std=gnu++0x -I/home/evansl/prog_dev/boost-svn/ro/trunk/sandbox/rw/non_variadic_templates -I/home/evansl/prog_dev/boost-svn/ro/trunk -I../../.. -DTEMPLATE_DEPTH=300 solve_tridiag_ublas.cpp -MMD -o solve_tridiag_ublas.o In file included from solve_tridiag_ublas.cpp:2:0: /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp: In instantiation of 'typename boost::numeric::ublas::matrix_matrix_solve_traits<E1, E2>::result_type boost::numeric::ublas::solve(const boost::numeric::ublas::matrix_expression<E1>&, const boost::numeric::ublas::matrix_expression<E1>&, C) [with E1 = boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >; E2 = boost::numeric::ublas::matrix_binary_scalar1<const double, boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, boost::numeric::ublas::scalar_multiplies<double, double> >; C = double; typename boost::numeric::ublas::matrix_matrix_solve_traits<E1, E2>::result_type = boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >]': /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/blas.hpp:387:48: required from 'M1& boost::numeric::ublas::blas_3::tsm(M1&, const T&, const M2&, C) [with M1 = boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >; T = double; M2 = boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >; C = double]' solve_tridiag_ublas.cpp:150:54: required from here /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:2587:9: error: no matching function for call to 'inplace_solve(const boost::numeric::ublas::matrix_expression<boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > > >&, boost::numeric::ublas::matrix_matrix_solve_traits<boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, boost::numeric::ublas::matrix_binary_scalar1<const double, boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, boost::numeric::ublas::scalar_multiplies<double, double> > >::result_type&, double)' /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:2587:9: note: candidates are: /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:1859:10: note: template<class E1, class E2> void boost::numeric::ublas::inplace_solve(const boost::numeric::ublas::matrix_expression<E1>&, boost::numeric::ublas::vector_expression<E2>&, boost::numeric::ublas::lower_tag, boost::numeric::ublas::column_major_tag, boost::numeric::ublas::dense_proxy_tag) /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:1859:10: note: template argument deduction/substitution failed: /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:2587:9: note: 'boost::numeric::ublas::matrix_matrix_solve_traits<boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, boost::numeric::ublas::matrix_binary_scalar1<const double, boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, boost::numeric::ublas::scalar_multiplies<double, double> > >::result_type {aka boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >}' is not derived from 'boost::numeric::ublas::vector_expression<E2>' /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:1885:10: note: template<class E1, class E2> void boost::numeric::ublas::inplace_solve(const boost::numeric::ublas::matrix_expression<E1>&, boost::numeric::ublas::vector_expression<E2>&, boost::numeric::ublas::lower_tag, boost::numeric::ublas::column_major_tag, boost::numeric::ublas::packed_proxy_tag) /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:1885:10: note: template argument deduction/substitution failed: /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:2587:9: note: 'boost::numeric::ublas::matrix_matrix_solve_traits<boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, boost::numeric::ublas::matrix_binary_scalar1<const double, boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, boost::numeric::ublas::scalar_multiplies<double, double> > >::result_type {aka boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >}' is not derived from 'boost::numeric::ublas::vector_expression<E2>' /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:1914:10: note: template<class E1, class E2> void boost::numeric::ublas::inplace_solve(const boost::numeric::ublas::matrix_expression<E1>&, boost::numeric::ublas::vector_expression<E2>&, boost::numeric::ublas::lower_tag, boost::numeric::ublas::column_major_tag, boost::numeric::ublas::unknown_storage_tag) /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:1914:10: note: template argument deduction/substitution failed: /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:2587:9: note: 'boost::numeric::ublas::matrix_matrix_solve_traits<boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, boost::numeric::ublas::matrix_binary_scalar1<const double, boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, boost::numeric::ublas::scalar_multiplies<double, double> > >::result_type {aka boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >}' is not derived from 'boost::numeric::ublas::vector_expression<E2>' /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:1942:10: note: template<class E1, class E2> void boost::numeric::ublas::inplace_solve(const boost::numeric::ublas::matrix_expression<E1>&, boost::numeric::ublas::vector_expression<E2>&, boost::numeric::ublas::lower_tag, boost::numeric::ublas::column_major_tag) /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:1942:10: note: template argument deduction/substitution failed: /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:2587:9: note: 'boost::numeric::ublas::matrix_matrix_solve_traits<boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, boost::numeric::ublas::matrix_binary_scalar1<const double, boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, boost::numeric::ublas::scalar_multiplies<double, double> > >::result_type {aka boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >}' is not derived from 'boost::numeric::ublas::vector_expression<E2>' /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:1950:10: note: template<class E1, class E2> void boost::numeric::ublas::inplace_solve(const boost::numeric::ublas::matrix_expression<E1>&, boost::numeric::ublas::vector_expression<E2>&, boost::numeric::ublas::lower_tag, boost::numeric::ublas::row_major_tag) /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:1950:10: note: template argument deduction/substitution failed: /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:2587:9: note: 'boost::numeric::ublas::matrix_matrix_solve_traits<boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, boost::numeric::ublas::matrix_binary_scalar1<const double, boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, boost::numeric::ublas::scalar_multiplies<double, double> > >::result_type {aka boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >}' is not derived from 'boost::numeric::ublas::vector_expression<E2>' /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:1959:10: note: template<class E1, class E2> void boost::numeric::ublas::inplace_solve(const boost::numeric::ublas::matrix_expression<E1>&, boost::numeric::ublas::vector_expression<E2>&, boost::numeric::ublas::lower_tag) /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:1959:10: note: template argument deduction/substitution failed: /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:2587:9: note: 'boost::numeric::ublas::matrix_matrix_solve_traits<boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, boost::numeric::ublas::matrix_binary_scalar1<const double, boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, boost::numeric::ublas::scalar_multiplies<double, double> > >::result_type {aka boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >}' is not derived from 'boost::numeric::ublas::vector_expression<E2>' /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:1967:10: note: template<class E1, class E2> void boost::numeric::ublas::inplace_solve(const boost::numeric::ublas::matrix_expression<E1>&, boost::numeric::ublas::vector_expression<E2>&, boost::numeric::ublas::unit_lower_tag) /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:1967:10: note: template argument deduction/substitution failed: /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:2587:9: note: 'boost::numeric::ublas::matrix_matrix_solve_traits<boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, boost::numeric::ublas::matrix_binary_scalar1<const double, boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, boost::numeric::ublas::scalar_multiplies<double, double> > >::result_type {aka boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >}' is not derived from 'boost::numeric::ublas::vector_expression<E2>' /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:1977:10: note: template<class E1, class E2> void boost::numeric::ublas::inplace_solve(const boost::numeric::ublas::matrix_expression<E1>&, boost::numeric::ublas::vector_expression<E2>&, boost::numeric::ublas::upper_tag, boost::numeric::ublas::column_major_tag, boost::numeric::ublas::dense_proxy_tag) /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:1977:10: note: template argument deduction/substitution failed: /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:2587:9: note: 'boost::numeric::ublas::matrix_matrix_solve_traits<boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, boost::numeric::ublas::matrix_binary_scalar1<const double, boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, boost::numeric::ublas::scalar_multiplies<double, double> > >::result_type {aka boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >}' is not derived from 'boost::numeric::ublas::vector_expression<E2>' /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:2003:10: note: template<class E1, class E2> void boost::numeric::ublas::inplace_solve(const boost::numeric::ublas::matrix_expression<E1>&, boost::numeric::ublas::vector_expression<E2>&, boost::numeric::ublas::upper_tag, boost::numeric::ublas::column_major_tag, boost::numeric::ublas::packed_proxy_tag) /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:2003:10: note: template argument deduction/substitution failed: /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:2587:9: note: 'boost::numeric::ublas::matrix_matrix_solve_traits<boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, boost::numeric::ublas::matrix_binary_scalar1<const double, boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, boost::numeric::ublas::scalar_multiplies<double, double> > >::result_type {aka boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >}' is not derived from 'boost::numeric::ublas::vector_expression<E2>' /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:2032:10: note: template<class E1, class E2> void boost::numeric::ublas::inplace_solve(const boost::numeric::ublas::matrix_expression<E1>&, boost::numeric::ublas::vector_expression<E2>&, boost::numeric::ublas::upper_tag, boost::numeric::ublas::column_major_tag, boost::numeric::ublas::unknown_storage_tag) /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:2032:10: note: template argument deduction/substitution failed: /home/evansl/prog_dev/boost-svn/ro/trunk/boost/numeric/ublas/triangular.hpp:2587:9: note: 'boost::numeric::ublas::matrix_matrix_solve_traits<boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, boost::numeric::ublas::matrix_binary_scalar1<const double, boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, boost::numeric::ublas::scalar_multiplies<double, double> > >::result_type {aka boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_row_major<>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >}' is not derived from 'boost::numeric::ublas::vector_expression<E2>' and it goes on and on. Looking at libs/numeric/ublas/test:23.cpp was no help since it looked like it was doing exactly what the attached code is doing. Please, what can I change to get the attached to compile? TIA. -regards, Larry

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