- Boost-users - lists.boost.org

Re: [Boost-users] is_polymorphic addition please
by Ray Hilton 03 Mar '06

03 Mar '06

>I'm not entirely sure what you mean here: do you mean "if class X is only >polymorphic because of base class Y, then don't count X as polymorphic"? >If so then I don't see any way to implement that, anyone else? >John. Yes, that is what i meant. A lot of stuff that is inherited will never be used polymorphically, like boost::noncopyable, binary_funciton<> type classes that only bring in typedefs etc. It would we be of great help im sure. Anyway, sorry for hijacking a thread. Ray Hilton, _________________________________________________________________ Dont just search. Find. Check out the new MSN Search! http://search.msn.click-url.com/go/onm00200636ave/direct/01/

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Re: [Boost-users] serialization: again a problem, failing to serializea std::vector of pointers
by Joaquín Mª López Muñoz 03 Mar '06

03 Mar '06

RIVASSEAU Jean Noel ha escrito: > Sorry, I removed the QString stuff, so it should make more sense to you now. I have attached the cleaned up code. If you try to compile it, it will fail on the file > > ClassSpecification_serialization.cc > > with a message saying that there is a problem with the extended_type_info of std::vector< MemberVariableSpecification *> (since a member of ClassSpecification, which I serialize, is of this type). > > Don't pay attention as to what are my real intentions on this example code, this comes from my real project, and it would be long to explain. Just let's say that, no, I am not trying to store class id information into the archive, it is just that one data member of one of object that I need to serialize has the name class_id (but it could be named "walnut_field", the code would be the same). > > This small example code is just there to show you the bug that occurs. > > As for the mixing of type systems (no_rtti and type_id), it was just a test to see if that would change things. I have reverted it back in the attached code (only no_rtti used) but it still does not work. > Jean-Noël, maybe you can try using the proposed patch at http://lists.boost.org/Archives/boost/2006/02/101539.php and report your results. I've got the hunch your problem might be related to the issue dealt with at that post. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

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Can I use STL transform and lambda to add 2 int vector?
by Meryl Silverburgh 03 Mar '06

03 Mar '06

Hi, I would like to know if I can use transform and lambda to add 2 int vector and save the result into a third int vector vector<int> src1; vector<int> src2; vector<int> result // put the value of src1 and src2

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New User With Busted Compiler
by V. Thane Norton III 03 Mar '06

03 Mar '06

I have just started using Boost, and am really enjoying using it, especially uBLAS. Unfortunately, my production code needs to use GCC 3.3 (for marketing reasons) which the Boost 1.33.1 uBLAS does not support. What is the latest version of Boost that I can use for uBLAS on GCC 3.3? Is there some hackery that I can perform to get 1.33.1 working? ----------------------------------------- V. Thane Norton III Macintosh Software Engineer Wacom Technology Corporation phone: 360.896.9833 x172 mailto:tnorton@wacom.com

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Re: [Boost-users] [multi_index] Trouble using MultiIndex with VisualStudio 2005
by JOAQUIN LOPEZ MU?Z 02 Mar '06

02 Mar '06

----- Mensaje original ----- De: Andrew Holden <aholden(a)charteroaksystems.com> Fecha: Jueves, Marzo 2, 2006 9:50 pm Asunto: [Boost-users] [multi_index] Trouble using MultiIndex with VisualStudio 2005 > I am trying to compile a program using MultiIndex from Boost 1.33.1 > using Visual Studio 2005 (MSVC8). So far, I can not get it to compile > with fewer than 100 errors. Does anyone know what I might be doing > wrong? > > I have attached the source file I am using to test, as well as the > output from my compiler. Hello Andrew, You have to add #include <boost/multi_index/ordered_index.hpp> so as to bring ordered indices in. Other than this, a visual inspection of your code does not reveal further problems, please let me know otherwise. If this is any consolation to you, you're not the first one stumbling into this problem, thus I've explicitly added the necessary #includes in the main snippets of the documentation for the next release, as can be seen for instance in the preview link: http://boost- consulting.com/boost/libs/multi_index/doc/tutorial/basics.html#multiple _sort Thanks for trying Boost.MultiIndex, Joaquín M López Muñoz Telefónica, Investigación y Desarrollo _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

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Questions about boost with a vector of pair
by yinglcs2＠yahoo.com 02 Mar '06

02 Mar '06

I am trying to write a function with takes a vector of pair and an key (integer). it should return true if the input key matches the FIRST value of the map. bool containsPair(vector< pair<int, int> >& aMap, int key ) { return ( find_if ( aMap.begin(), aMap.end(), bind( equal_to<int>(), boost::lambda::bind( &pair< int, int>::first_type::first, boost::lambda::_1) , key ) ) != aMap.end()); } But i cant' get the code to compile. I have this error: ../RowColumn1_4PatternMatcherHelper.h: In function bool containsPair(std::vector<std::pair<int, int>, std::allocator<std::pair<int, int> > >&, int): ../RowColumn1_4PatternMatcherHelper.h:62: error: struct std::pair<int, int>::first_type is not a class or namespace ../RowColumn1_4PatternMatcherHelper.h:62: error: first was not declared in this scope make: *** [TestDriver.o] Error 1 any help is appreciated. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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BGL connected_components for directed graphs
by Gavin Band 02 Mar '06

02 Mar '06

Dear boosters, I am trying to compile a program which is identical to the example http://www.boost.org/libs/graph/example/connected_components.cpp given in the docs, except that in the graph typedef I changed undirectedS to directedS. However, I get a compilation error: g++ -o test_c++.o -I/usr/include/boost -c test_c++.cpp /usr/include/boost/graph/connected_components.hpp: In function `typename boost::property_traits<IndexMap>::value_type boost::connected_components(const Graph&, ComponentMap) [with Graph = main(int, char**)::Graph, ComponentMap = int*]': test_c++.cpp:45: instantiated from here /usr/include/boost/graph/connected_components.hpp:87: error: incomplete type `boost::STATIC_ASSERTION_FAILURE< false>' used in nested name specifier /usr/include/boost/graph/connected_components.hpp:87: error: size of array has non-integral type `<type error>' Presumably this is some meta-program's way of telling me that my graph isn't undirected. Is there any way to make this work for an directed graph? (I am using gcc 3.4.4 and boost 1.33.0) Thanks, Gavin Band.

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[multi_index] Trouble using MultiIndex with Visual Studio 2005
by Andrew Holden 02 Mar '06

02 Mar '06

I am trying to compile a program using MultiIndex from Boost 1.33.1 using Visual Studio 2005 (MSVC8). So far, I can not get it to compile with fewer than 100 errors. Does anyone know what I might be doing wrong? I have attached the source file I am using to test, as well as the output from my compiler. Andrew Holden Charter Oak Investment Systems, Inc.

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FW: adjacency_list remove_edge
by Sean Kelly 02 Mar '06

02 Mar '06

Hi All, I have observed the following behavior using the remove_edge function and am curious if anyone else has seen this. remove_edge(edge_descriptor, graph) // occasionally fails in a seemingly indeterminant way remove_edge(source(edge_descriptor, graph), target(edge_descriptor, graph), graph) // works fine The adjacency list I am using is listS listS, and this is not an issue with invalid edge_iterators, i.e. I collect all the edge_descriptors to be removed before removing them. I can provide more detailed info upon request. thanks for any input Sean Kelly Sean Kelly Ph.D. Staff Software Engineer Xilinx Inc. ph: 720-652-3919 fax: 720-652-3434

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Re: [Boost-users] Can't statically link demo program with Boost.Serialization 1.33
by Demos Rali 02 Mar '06

02 Mar '06

On Wed, 1 Mar 2006, Robert Ramey wrote: > I'm not an expert in gcc command line switches. But it seems odd > to me that you don't have to specify the full library name with the > -L switch. There are several verasions of the library built and I > don't see how the proper one can be select without explicitly > specifying it. gcc doesn't implemant autolink as far as I know. > I traced the linker (ld) and it autolinks against the dynamic libraries when I dont specify -static on the command line and against the static libraries (libboost_serialization.a) when I do specify -static, which is what I intended. If I specify the name of the library on the command line, as you suggest, this doesn't solve the problem (same results). Therefore, an incorrect library selection doesn't seem to be the problem by the linker. Thank you. > > Robert Ramey > > >> Hello, >> >> I am having difficulties statically compiling the demo program at >> http://www.boost.org/libs/serialization/example/demo.cpp >> on Linux (Linux 2.6.15-1.1831_FC4 #1 SMP Tue Feb 7 13:37:59 EST 2006 >> x86_64 GNU/Linux) with gcc version 4.0.2 20051125. >> [snip] >> Fabrizio

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