September 2008 - Boost-users

Visual Studio 9.0 Express & boost 1.36 linker issues
by Alfonso Urdaneta 10 Sep '08

10 Sep '08

1. Build boost from scratch. C:\boost\boost_1_36_0>bjam --build-dir="c:\tmp\build-boost" --toolset=msvc --build-type=complete stage C:\boost\boost_1_36_0>bjam --build-dir="c:\tmp\build-boost" --toolset=msvc --build-type=complete install 2. Create a windows form application. add nothing but the line #include <boost/thread.hpp> 3. Update project re: inc and lib dirs. 4. link. Error output follows: 1>------ Build started: Project: b136_test, Configuration: Debug Win32 ------ 1>Linking... 1>b136_test.obj : error LNK2028: unresolved token (0A00000E) "public: virtual char const * __clrcall boost::thread_resource_error::what(void)const " (?what@thread_resource_error@boost@@$$FUBMPBDXZ) referenced in function "void __clrcall `dynamic initializer for 'const boost::thread_resource_error::`vftable'''(void)" (???__E??_7thread_resource_error@boost@@6B@@@YMXXZ@?A0xa2903452@@$$FYMXXZ) 1>b136_test.obj : error LNK2028: unresolved token (0A00000F) "public: virtual char const * __clrcall boost::lock_error::what(void)const " (?what@lock_error@boost@@$$FUBMPBDXZ) referenced in function "void __clrcall `dynamic initializer for 'const boost::lock_error::`vftable'''(void)" (???__E??_7lock_error@boost@@6B@@@YMXXZ@?A0xa2903452@@$$FYMXXZ) 1>b136_test.obj : error LNK2028: unresolved token (0A00001E) "public: virtual __clrcall boost::lock_error::~lock_error(void)" (??1lock_error@boost@@$$FUAM@XZ) referenced in function "public: virtual void * __clrcall boost::lock_error::`vector deleting destructor'(unsigned int)" (??_Elock_error@boost@@$$FUAMPAXI@Z) 1>b136_test.obj : error LNK2028: unresolved token (0A00003B) "public: virtual __clrcall boost::thread_exception::~thread_exception(void)" (??1thread_exception@boost@@$$FUAM@XZ) referenced in function "public: virtual void * __clrcall boost::thread_exception::`vector deleting destructor'(unsigned int)" (??_Ethread_exception@boost@@$$FUAMPAXI@Z) 1>b136_test.obj : error LNK2028: unresolved token (0A00003C) "public: virtual __clrcall boost::thread_resource_error::~thread_resource_error(void)" (??1thread_resource_error@boost@@$$FUAM@XZ) referenced in function "public: virtual void * __clrcall boost::thread_resource_error::`vector deleting destructor'(unsigned int)" (??_Ethread_resource_error@boost@@$$FUAMPAXI@Z) 1>b136_test.obj : error LNK2019: unresolved external symbol "public: virtual __clrcall boost::thread_resource_error::~thread_resource_error(void)" (??1thread_resource_error@boost@@$$FUAM@XZ) referenced in function "public: virtual void * __clrcall boost::thread_resource_error::`vector deleting destructor'(unsigned int)" (??_Ethread_resource_error@boost@@$$FUAMPAXI@Z) 1>b136_test.obj : error LNK2019: unresolved external symbol "public: virtual __clrcall boost::thread_exception::~thread_exception(void)" (??1thread_exception@boost@@$$FUAM@XZ) referenced in function "public: virtual void * __clrcall boost::thread_exception::`vector deleting destructor'(unsigned int)" (??_Ethread_exception@boost@@$$FUAMPAXI@Z) 1>b136_test.obj : error LNK2019: unresolved external symbol "public: virtual __clrcall boost::lock_error::~lock_error(void)" (??1lock_error@boost@@$$FUAM@XZ) referenced in function "public: virtual void * __clrcall boost::lock_error::`vector deleting destructor'(unsigned int)" (??_Elock_error@boost@@$$FUAMPAXI@Z) 1>b136_test.obj : error LNK2019: unresolved external symbol "public: virtual char const * __clrcall boost::lock_error::what(void)const " (?what@lock_error@boost@@$$FUBMPBDXZ) referenced in function "void __clrcall `dynamic initializer for 'const boost::lock_error::`vftable'''(void)" (???__E??_7lock_error@boost@@6B@@@YMXXZ@?A0xa2903452@@$$FYMXXZ) 1>b136_test.obj : error LNK2019: unresolved external symbol "public: virtual char const * __clrcall boost::thread_resource_error::what(void)const " (?what@thread_resource_error@boost@@$$FUBMPBDXZ) referenced in function "void __clrcall `dynamic initializer for 'const boost::thread_resource_error::`vftable'''(void)" (???__E??_7thread_resource_error@boost@@6B@@@YMXXZ@?A0xa2903452@@$$FYMXXZ) 1>C:\code\merlot\av8b\software\prototypes\b136_test\Debug\b136_test.exe : fatal error LNK1120: 10 unresolved externals 1>Build log was saved at "file://c:\code\merlot\av8b\software\prototypes\b136_test\b136_test\Debug\BuildLog.htm" 1>b136_test - 11 error(s), 0 warning(s) ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== Verified that thread stuff is there C:\boost\lib>dir *thread* Volume in drive C has no label. Volume Serial Number is 1CFE-113F Directory of C:\boost\lib 09/08/2008 10:56 AM 35,328 boost_thread-vc90-mt-1_36.dll 09/08/2008 10:56 AM 31,348 boost_thread-vc90-mt-1_36.lib 09/08/2008 10:41 AM 52,736 boost_thread-vc90-mt-gd-1_36.dll 09/08/2008 10:41 AM 31,634 boost_thread-vc90-mt-gd-1_36.lib 09/08/2008 10:41 AM 31,634 boost_thread-vc90-mt-gd.lib 09/08/2008 10:56 AM 31,348 boost_thread-vc90-mt.lib 09/08/2008 11:18 AM 312,458 libboost_thread-vc90-mt-1_36.lib 09/08/2008 11:07 AM 1,281,058 libboost_thread-vc90-mt-gd-1_36.lib 09/08/2008 11:07 AM 1,281,058 libboost_thread-vc90-mt-gd.lib 09/08/2008 11:42 AM 353,712 libboost_thread-vc90-mt-s-1_36.lib 09/08/2008 11:42 AM 353,712 libboost_thread-vc90-mt-s.lib 09/08/2008 11:28 AM 1,270,890 libboost_thread-vc90-mt-sgd-1_36.lib 09/08/2008 11:28 AM 1,270,890 libboost_thread-vc90-mt-sgd.lib 09/08/2008 11:18 AM 312,458 libboost_thread-vc90-mt.lib 14 File(s) 6,650,264 bytes 0 Dir(s) 834,019,328 bytes free Suggestions for next step in figuring out what the problem is ? -- alfonso e. urdaneta _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ This e-mail and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. 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Re: [Boost-users] Comparing two vectors element by element
by Peter Barker 10 Sep '08

10 Sep '08

On Tue, Sep 9, 2008 at 5:15 PM, Peter Barker <newbarker(a)gmail.com> wrote: > On Tue, Sep 9, 2008 at 4:55 PM, Sean Farrow > <sean.farrow(a)seanfarrow.co.uk> wrote: >> Hi: >> I need to compare two vectors. I already have a function to compare two >> individual elements (std::bitsets) in this case. Can I use boost.foreach >> to do this, or is there a better way. >> I need to know whether vector one, is less than vector two. >> >> Any help apreciated. >> Cheers >> Sean. > > Just use == as you do with built in data types e.g.: > > #include <vector> > #include <iostream> > > int main() > { > std::vector<int> v1; > std::vector<int> v2; > > if(v1 == v2) > std::cout << "They're the same" << std::endl; > } > Oops - sorry - I posted too quickly. Let's try again... Just use the < operator as you would with built in types. e.g.: #include <vector> #include <iostream> int main() { std::vector<int> v1; v1.push_back(5); std::vector<int> v2; v2.push_back(6); if(v1 < v2) std::cout << "v1 is smaller than v2" << std::endl; }

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boost::parameter -- merging two ArgPacks
by e r 10 Sep '08

10 Sep '08

hello, here's what i'm looking to do: template<typename ArgPack> result_type unary_fun(const ArgPack& args){ //typically calls args[some_tag] } template<typename ArgPack1,typename ArgPack2> result_type binary_fun(const ArgPack1& args1,const ArgPack2& args2){ return unary_fun(merge(args1,args2)); } i'm looking to define merge. not familiar enough with arg_list.hpp any help would be appreciated. thanks.

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[serialization] Assertion failed on application exit
by Takeo 10 Sep '08

10 Sep '08

Hello, I'm using boost 1.36 for serialization and everithing goes fine except this strange assertion error when I exit my application (console or window) : assertion failed: NULL != r, file libs\serialization\src\extended_type_info.cpp, line 49 The error occured in debug and release mode and boost is used in a static library called by the application. Have you got any idea of how to get rid of this? Thanks by advance. Emmanuel -- View this message in context: http://www.nabble.com/-serialization--Assertion-failed-on-application-exit-… Sent from the Boost - Users mailing list archive at Nabble.com.

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boost::posix_time::ptime - performance
by amit khandelwal 09 Sep '08

09 Sep '08

For 1 million invocations of boost::posix_time::ptime ptm (boost::posix_time::microsec_clock::local_time() ); // Get current time It takes about 1 sec. However, gettimeofday takes about 300 ms. gettimeofday takes about 300 ms. // struct timeval tv; // gettimeofday(&tv, NULL); Any pointers on why it takes so long? I want to ensure that timestamp call are not expensive. Any suggestion/recommendation? -- ------------------------------------------------------------------- Ph : (732) 647 5679 Email: khandelwal.amit(a)gmail.com Web: http://khandelwal.amit.googlepages.com/home -------------------------------------------------------------------

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Using the operators library
by Sean Farrow 09 Sep '08

09 Sep '08

Hi: Can I use the operators library to override operators for the std::bitset class. If so how do I do this? Cheers Sean. __________ Information from ESET NOD32 Antivirus, version of virus signature database 3426 (20080908) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com

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[multi_index_container] push_back?
by Robert Jones 09 Sep '08

09 Sep '08

Still having a little teething trouble with multi_index_container. This code, #include <string> #include <boost/multi_index_container.hpp> #include <boost/multi_index/ordered_index.hpp> #include <boost/multi_index/identity.hpp> #include <boost/multi_index/member.hpp> using namespace boost; using namespace boost :: multi_index; struct Employee { int id; std :: string name; }; bool operator < ( Employee const & l, Employee const & r ) { return l.id < r.id; } int main( ) { typedef multi_index_container< Employee, indexed_by< ordered_unique<identity<Employee> >, ordered_non_unique<member<Employee, std :: string, & Employee :: name> > > > EmployeeSet; Employee employees[ ] = { { 1, "Adam" }, { 2, "Craig" }, { 3, "Brian" }, { 4, "Dave" }, }; // EmployeeSet eSet( employees, employees + sizeof( employees ) / sizeof( Employee ) ); EmployeeSet eSet; std :: copy( employees, employees + sizeof( employees ) / sizeof( Employee ), std :: back_inserter( eSet ) ); return 0; } Gives me an error stating there is no push_back method on the container. /usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/bits/stl_iterator.h:364: error: 'class boost::multi_index::multi_index_con tainer<Employee, boost::multi_index::indexed_by<boost::multi_index::ordered_unique<boost::multi_index::identity<Employee >, mpl_::na, mpl_::na>, boost::multi_index::ordered_non_unique<boost::multi_index::member<Employee, std::string, &Employ ee::name>, mpl_::na, mpl_::na>, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na , mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, std::allocator<Employee> >' has no member named 'push_back' is there something I'm missing out? Thanks, Rob.

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Re: [Boost-users] How the boost documentation is generated? (Peng Yu)
by Rodolfo Federico Gamarra 09 Sep '08

09 Sep '08

Hi Peng, Did you look at these webpages? http://www.boost.org/doc/libs/1_36_0/doc/html/boostbook.html http://www.boost.org/doc/libs/1_36_0/tools/quickbook/doc/html/index.html http://www.docbook.org/ Maybe you find them helpful. Thanks. -- Rodolfo Federico Gamarra

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[string algorithms] finding last digit
by Peter Barker 09 Sep '08

09 Sep '08

Hello, I have the following program: #include <string> #include <boost/algorithm/string/classification.hpp> #include <boost/algorithm/string/finder.hpp> int main() { std::string str("12.5e"); boost::last_finder(str,boost::is_digit()); // <--- is this sort of right? } What I'm trying to do is find the last occurence of a digit in my string (and learn a bit more about Boost.StringAlgorithms!). Am I going down the correct route here, and if so would someone be so kind to add to my program to show how I could obtain and output the index? The call operator for last_finder accepts two paramters which has thrown me as I thought the range was defined at construction. Thanks in advance, Pete

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[multi_index_container] Compiling the examples
by Robert Jones 09 Sep '08

09 Sep '08

Trying to multi_index_container I'm getting these compile errors. Apart from #include <string> and using namespace boost this lifted verbatim from the example documentation. #include <string> struct employee { int id; std::string name; employee(int id,const std::string& name):id(id),name(name){} bool operator<(const employee& e)const{return id<e.id;} }; #include <boost/multi_index_container.hpp> #include <boost/multi_index/ordered_index.hpp> #include <boost/multi_index/identity.hpp> #include <boost/multi_index/member.hpp> using namespace boost; // define a multiply indexed set with indices by id and name typedef multi_index_container< employee, indexed_by< // sort by employee::operator< ordered_unique<identity<employee> >, // sort by less<string> on name ordered_non_unique<member<employee,std::string,&employee::name> > > > employee_set; My error is multi.cpp:23: error: `indexed_by' was not declared in this scope multi.cpp:25: error: `ordered_unique' was not declared in this scope multi.cpp:25: error: `identity' was not declared in this scope multi.cpp:25: error: template argument 2 is invalid multi.cpp:25: error: expected unqualified-id before '>' token multi.cpp:25: error: expected `,' or `;' before '>' token I'm using Boost 1.36 and gcc 3.4.4 (maybe this too old?). Can anyone tell me what I'm doing wrong? Thanks, Rob. -- ACCU - Professionalism in programming - http://www.accu.org

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