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Re: Serialization linker error question
by Jonathan D. Turkanis 10 Nov '04

10 Nov '04

"Delfin Rojas" <drojas(a)moodlogic.com> wrote > Yes and yes. I am aware boost::serialization needs to be built. Okay, just checking that the computer was plugged in ;-) > Anyway, I built the serialization static libs (no dll seems to be available > at this time) and I'm linking against it. However I got the linker error I > mentioned before. It seems for some reason I cannot serialize this container > (set of wstrings). I also tried changing it to a list of wstrings and got a > similar unresolved external. If I try to not serialize the container my > program links perfectly. One of our other technicians will have to help you with that. :-) > Sorry my original post was in reply to a completely different one. That was > my lazy way to get the email address in the "to" box. I changed the title > but I forgot to delete the body of the previous email as I always do. It doesn't bother me -- it just makes it less likely that others will see your message, and results in erroneous archiving. > Anyway, any help you guys can give me? I can try to come up with a small > example of my problem if you guys need it. This always helps. > Thanks > > -delfin

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variant.hpp/bind.hpp interaction
by Simmons, Aaron 10 Nov '04

10 Nov '04

I'm using boost 1.31 with vc7.1. I've found a weird compilation interaction between the boost.bind and boost.variant headers. This code will compile fine: #include "boost/variant.hpp" #include "boost/bind.hpp" But this code won't: #include "boost/bind.hpp" #include "boost/variant.hpp" Here are the errors that are reported: c:\Boost\include\boost-1_31\boost\mpl\less.hpp(39) : error C2760: syntax error : expected ',' not ';' c:\Boost\include\boost-1_31\boost\mpl\less.hpp(51) : see reference to class template instantiation 'boost::mpl::less<T1,T2>' being compiled c:\Boost\include\boost-1_31\boost\mpl\less.hpp(39) : error C2144: syntax error : 'const bool' should be preceded by '}' c:\Boost\include\boost-1_31\boost\mpl\less.hpp(39) : error C2062: type 'const bool' unexpected c:\Boost\include\boost-1_31\boost\mpl\less.hpp(39) : error C2238: unexpected token(s) preceding ';' c:\Boost\include\boost-1_31\boost\mpl\less.hpp(42) : error C2065: 'value' : undeclared identifier

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RE: [Boost-users] hello world in boost ?
by Foster, Gareth 10 Nov '04

10 Nov '04

I can tell you that on a fedora/redhat box, you just include the headers and you are away. If you installed the development package group it will be there and you can build c++ programs and use boost out of the box. What distro are you using? Gaz -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Justin Findlay Sent: 10 November 2004 07:58 To: boost-users(a)lists.boost.org Subject: Re: [Boost-users] hello world in boost ? On Wed, Nov 10, 2004 at 01:33:36AM -0500, paul wisehart wrote: > I am able to compile the boost libaray on my linux machines. > I am not able to use it. > > Is there a simple program I can try to compile to make > sure I am doing things correctly. > > I'm sorry. its a shortcoming of mine, but I can't do _anything_ > until I have a working stub. > (or hello_world, or wahtever you want to call it.) > > I just need a simple example of how to compile a boost > prohram from g++ . Which library are you wanting to enhance the efficacy of your hello world program with? Most (all?) the boost libs documentation include usage and simple examples. Justin _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

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Re: [Boost-users] hello world in boost ?
by paul wisehart 10 Nov '04

10 Nov '04

On Wed, Nov 10, 2004 at 09:35:08AM +0000, Foster, Gareth wrote: > I can tell you that on a fedora/redhat box, you just include the headers and > you are away. If you installed the development package group it will be > there and you can build c++ programs and use boost out of the box. What > distro are you using? I'm using Slackware. Lemme ask a simpler question: What the "library" name of boost-regex. Meaning when I compile with g++ from command line, what do I put after the "l"? something like: -lboost or -lboost_regex or -llibboost_regex ? -- paul \ / wisehart >/ <//////$> |\|\|\

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ublas compatible solvers (newbie question) (Zrubavel Zodikovich)
by Daniel L Elliott 10 Nov '04

10 Nov '04

------------------------------ Message: 2 Date: Fri, 05 Nov 2004 22:52:14 +0200 From: Zrubavel Zodikovich <g729(a)mail.com> Subject: [Boost-users] ublas compatible solvers (newbie question) To: boost-users(a)lists.boost.org Message-ID: <cmgosk$jst$1(a)sea.gmane.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Hi all, I'm looking into using uBLAS for solving some big sparse systems, specifically with conjugate gradient family of solvers. Could anyone point me towards boost-compatible implementation of such solver ? thanks in advance ------------------------------ Hello, I know of no such solvers in or out of uBLAS so I am not of much help. However, you may want to consider interfacing uBLAS with libraries which are not compatable with uBLAS. You will find such interfaces in the BOOST-sandbox CVS. I may be undertaking a similar exercise between uBLAS and some sparse system solvers. Also, there exists documentation for these bindings, but I cannot find the link :( Best of luck, Dan

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hello world in boost ?
by paul wisehart 10 Nov '04

10 Nov '04

Hi, I am able to compile the boost libaray on my linux machines. I am not able to use it. Is there a simple program I can try to compile to make sure I am doing things correctly. I'm sorry. its a shortcoming of mine, but I can't do _anything_ until I have a working stub. (or hello_world, or wahtever you want to call it.) I just need a simple example of how to compile a boost prohram from g++ . please help me :) -- paul \ / wisehart >/ <//////$> |\|\|\

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write_graphviz: write out edges when vertex data is a boost::shared_ptr?
by Stephen torri 09 Nov '04

09 Nov '04

How does one write out the proper edge node names when the vertex data is a boost::shared_ptr? My graph is defined as: typedef property< vertex_index_t, uint32_t, property< vertex_name_t, boost::shared_ptr<Component> > > VertexProperty; typedef adjacency_list<setS, // OutEdgeList setS, // VertexList directedS, // Directed VertexProperty> // VertexProperties Graph_Type; The call in graphviz.hpp at line 269 has me confused. I understand that the node ids are printed out by looking for the value stored in the vertex_index_t property, graphviz.hpp at line 263. So if the value stored at the vertex_index_t property was the value '3' the node's name would be '3'. The edges are what have me confused. I would expect that the source id and the target it would be the value of the vertex_index_t property. So if there are two nodes the dot file would be: 0[label="A"]; 1[label="B"]; 0 -> 1; Yet with a boost::shared_ptr stored in a vertex_name_t property I get: 0[label="A"]; 1[label="B"]; 0x807a108->0x807a128; Well anything starting with a '0x' is ambigiuos to the dot parser. It breaks the 0x807a108 into two names. I need to use a boost::shared_ptr for my data. I believe I have not used the right boost::property type. Is that right? What I expect to see as output for the dot file is: 0[label="A"]; 1[label="B"]; 0->1; Stephen -- Email: storri(a)torri.org

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PropertyWriter problem - how to handle a boost::shared_ptr type
by Stephen torri 08 Nov '04

08 Nov '04

I have the following graph: typedef property< vertex_index_t, uint32_t, property< vertex_name_t, boost::shared_ptr<Component> > > VertexProperty; typedef adjacency_list<setS, // OutEdgeList setS, // VertexList directedS, // Directed VertexProperty> // VertexProperties Graph_Type; When I looked at the documentation I did not see an example which used a boost::shared_ptr to store information at the vertex. Here is my attempt at writing a PropertyWriter. I cannot figure out how to write the 2nd function argument type: class Component_Writer { public: void operator()(std::ostream& out, const boost::shared_ptr<Component> obj) const { out << "[label=\"" << obj_ptr->get_Name() << "\n" << obj_ptr->get_ID() << "\"]"; } }; The error I get is: cd /home/storri/src/libreverse/src/infrastructure/ g++ -g -Wall -o graph_test2 graph_test2.cpp /usr/include/boost/graph/graphviz.hpp: In function `void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter) [with Graph = boost::adjacency_list<boost::setS, boost::setS, boost::directedS, boost::property<boost::vertex_index_t, uint32_t, boost::property<boost::vertex_name_t, boost::shared_ptr<Component>, boost::no_property> >, boost::no_property, boost::no_property, boost::listS>, VertexPropertiesWriter = Component_Writer, EdgePropertiesWriter = boost::default_writer, GraphPropertiesWriter = boost::default_writer]': /usr/include/boost/graph/graphviz.hpp:292: instantiated from `void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter) [with Graph = boost::adjacency_list<boost::setS, boost::setS, boost::directedS, boost::property<boost::vertex_index_t, uint32_t, boost::property<boost::vertex_name_t, boost::shared_ptr<Component>, boost::no_property> >, boost::no_property, boost::no_property, boost::listS>, VertexWriter = Component_Writer]' graph_test2.cpp:484: instantiated from here /usr/include/boost/graph/graphviz.hpp:264: error: no match for call to `( Component_Writer) (std::basic_ostream<char, std::char_traits<char> >&, void* const&)' graph_test2.cpp:49: error: candidates are: void Component_Writer::operator()(std::ostream&, const boost::shared_ptr<Component>&) const Compilation exited abnormally with code 1 at Mon Nov 8 00:15:3 Stephen -- Email: storri(a)torri.org

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Best method for storing a type in a boost graph vertex.
by Stephen torri 08 Nov '04

08 Nov '04

What is the best method for storing a type in a boost graph vertex? By value or pointer? I have the following graph type: typedef property< vertex_index_t, uint32_t, property< vertex_name_t, boost::shared_ptr<Component> > > VertexProperty; typedef adjacency_list<setS, // OutEdgeList setS, // VertexList directedS, // Directed VertexProperty> // VertexProperties Graph_Type; The Component is a class. I thought it was best to store it in the vertex as a pointer. Is this going to cause me trouble? Stephen -- Email: storri(a)torri.org

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ublas compatible solvers (newbie question)
by Zrubavel Zodikovich 08 Nov '04

08 Nov '04

Hi all, I'm looking into using uBLAS for solving some big sparse systems, specifically with conjugate gradient family of solvers. Could anyone point me towards boost-compatible implementation of such solver ? thanks in advance

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