April 2004 - Boost-users - lists.boost.org

how to package graph related data ???
by Gustavo Sánchez 02 Apr '04

02 Apr '04

Hi all, I'm developing a hardware test program with some class abstractions like resistor, diode, relay ... which I stick to the BGL graph structure in the edge properties. I so have some information associated with vertices, and the result is a set of data composed of the graph itself - an ajacency_list - the graph properties for edges and vertices and a couple of vectors for the abstractions. My problem is how can I manage all these data in an OO program. The method used in BGL examples (just declare all these in main ) is right just for that, but in a more complex object colaboration society I consider it to be simple and useless. I just use a class named GraphContainer to package all the elements, but I wonder if there is any other better aproach... class GraphContainer{ int nVertices; public: UGraph g; property_map<UGraph, vertex_index_t>::type id; property_map<UGraph, edge_name_t>::type name; property_map<UGraph, vertex_name_t>::type vname; std::map<string,boost::graph_traits<UGraph>::vertex_descriptor> vertx; // mapa vertices(string)--vertex_descriptor vector<Lampara> Lamparas; vector<Diodo> Diodos; vector<Switch> Switches; vector<Resistencia> Resistencias; vector<Bobina> Bobinas; // ---------- GraphContainer(); }; Thanks a lot... --------------------------------- Antivirus Filtros antispam 6 MB gratis ¿Todavía no tienes un correo inteligente?

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Re: [boost] [BGL] forced client complexity
by Jeremy Siek 01 Apr '04

01 Apr '04

Hi, I too am dissatisfied with the complexity of many parts of the BGL... On Mar 31, 2004, at 4:48 AM, Provisional Dissonance wrote: > Is there any particular reason that a > simplified interface is not made available? Just a lack of time. The priority was placed on providing flexibility and efficiency so that the BGL components could handle any situation... that flexibility came at the price of complexity. I think a good next step would be to provide more special purpose components that are easier to use. > Perhaps a > container adapter could be packaged with the library > allowing a compromise of functionality and flexibility > for simplicity? Could you explain this "container adaptor" idea more. > #include <less_than_10_graph_headers> > ... > digraph<some_node_type,some_edge_context_type> g; > g << "vertex" << make_pair("vertex", > "implicit_vertex"); > g.add_edge("brother", "sister", "sibling"); > if(g.find(make_pair("brother", "sister"))) > related = true; Perhaps this is a good place to start. Could you explain each of the above lines of code. Then we can compare to an implementation in the current BGL and pinpoint problem areas. Cheers, Jeremy _______________________________________________ Jeremy Siek <jsiek(a)osl.iu.edu> http://www.osl.iu.edu/~jsiek Ph.D. Student, Indiana University Bloomington Graduating in August 2004 and looking for work C++ Booster (http://www.boost.org) _______________________________________________

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multi_array iterator question
by James N. Knight 01 Apr '04

01 Apr '04

I am trying to sort a multi_array along a dimension that is not the last. In other words, I can sort the rows of a 2D multi_array like so: typedef boost::multi_array<double, 2> array_type; typedef array_type::iterator iterator2; typedef array_type::template subarray<1>::type::iterator iterator1; array_type A(boost::extents[10][10]); for (iterator2 i = A.begin(); i!=A.end(); ++i){ sort((*i).begin(),(*i).end()); What I can't seem to do is sort the columns. Is there a way I can create a view with the dimensions reordered? Or, can I somehow create a strided iterator that will do the job (select the values in a column)? I would like to avoid transposing the array. Pointers to the relevant documentation or suggestions are appreciated. James

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Boost.Test support address
by Gennadiy Rozental 01 Apr '04

01 Apr '04

For anyone interrested, direct support address for Boost.Test issues is now rogeeff(a)patmedia.com. Old one is not free anymore and not supported accordingly. Regards, Gennadiy.

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linker error creating simple unit_test (boost 1.31.0 + win32 + vc 71)
by Langston, Matthew David 01 Apr '04

01 Apr '04

I'm trying to create a simple unit test (using the Unit Test Framework) using boost 1.31.0 + win32 + vc71, but I get the following linker error due to the undefined symbol __imp___CrtSetReportHook: tests error LNK2019: unresolved external symbol __imp___CrtSetReportHook referenced in function "public: int __thiscall boost::execution_monitor::execute(bool,int)" (?execute@execution_monitor@boost@@QAEH_NH@Z) There was mention of this undefined symbol (__imp___CrtSetReportHook) in this thread: http://lists.boost.org/MailArchives/boost/msg43787.php. However, that post was concerning the Metrowerks compiler, but I am using Microsoft's vc71 compiler. Can someone help me resolve this undefined symbol (__imp___CrtSetReportHook) problem? Here is my simple "unit test suite" that I am trying to build: #include <boost/test/unit_test.hpp> #include <boost/test/included/unit_test_framework.hpp> using boost::unit_test_framework::test_suite; void test_GleamData() { BOOST_CHECK(2 == 1); // non-critical test => continue after failure } test_suite* init_unit_test_suite( int, char* [] ) { test_suite* test = BOOST_TEST_SUITE( "GleamAnalysis Test Suite" ); test -> add( BOOST_TEST_CASE( &test_GleamData ), 1 /* expected one error */ ); return test; } Warmest regards, Matt

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RE: [Boost-users] Re: License compatibility issues.
by Jim.Hyslop 01 Apr '04

01 Apr '04

David Abrahams wrote: > It seems to me that we can't ask > our volunteer lawyers to draw up a list of answers to all the possible > licensing questions along these lines, nor can we reasonably make them > available as an on-demand resource for answering boost users' legal > questions. No, but I think that the interaction between the LGPL or GPL and the Boost License is probably going to be a very frequently encountered scenario. Basically, what it boils down to is: what is the compatibility between LGPL or GPL, and the Boost license? Can we draw up a list of the most common free-software licenses, say the top three, and ask the volunteer lawyers to determine whether Boost is compatible with each of the three? I don't mean to determine the various combinations and permutations, e.g. Boost and GPL and Mozilla Artistic, but the simple ones: Boost and "x", Boost and "y", etc. Until and unless such a comparison is done, though, I would echo your advice about seeking a competent legal opinion. -- Jim Hyslop Senior Software Designer Leitch Technology International Inc. (http://www.leitch.com) Columnist, C/C++ Users Journal (http://www.cuj.com/experts)

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Re: License compatibility
by Cromwell Enage 01 Apr '04

01 Apr '04

Thanks, David Abrahams and Jim Hyslop! I'll heed your advice on seeking legal counsel and contacting the Free Software Foundation. Cromwell __________________________________ Do you Yahoo!? Yahoo! Small Business $15K Web Design Giveaway http://promotions.yahoo.com/design_giveaway/

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RE: [Boost-users] Re: about license
by Jim.Hyslop 01 Apr '04

01 Apr '04

David Abrahams wrote: > Only the Boost code must use the Boost license; you can put any > license terms you wish on your own code. Why would you think > otherwise? Maybe he's used to the GPL, which forces its license model to be applied to the entire package? -- Jim Hyslop Senior Software Designer Leitch Technology International Inc. (http://www.leitch.com) Columnist, C/C++ Users Journal (http://www.cuj.com/experts)

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about license
by Marleny Rafferty 01 Apr '04

01 Apr '04

Hi- I am considering using boost in my applications, but I have a question about the boost license at http://www.boost.org/LICENSE_1_0.txt . It says (edited) "Permission is hereby granted, free of charge, to ... use [and] reproduce ... the Software". It also says that any derivative works must also have the same license grant. If my application uses boost libraries unchanged, is it considered a derivative work? If so, does that mean that if I distribute my compiled software, I must allow free of charge use and distribution? Thanks. -- Marleny

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License compatibility issues.
by Cromwell Enage 01 Apr '04

01 Apr '04

Good morning. >From previous posts regarding the License, I'm assuming the Legal Team is on this mailing list; if not, please direct me to them. Scenario I: I'm building a library that uses the Boost libraries (the ones covered by the current Boost Software License) and the Simple DirectMedia Layer, which is distributed under the terms of the GNU "Lesser" Public License <http://www.gnu.org/copyleft/lgpl.html>. Can I release my library under the Boost Software License? Can I release it under the GNU LGPL? Or can I not release it at all? Scenario II: I plan on building an application that uses the Boost libraries (the ones covered by the current Boost Software License) and the FOX GUI Toolkit, which is distributed under the terms of the GNU General Public License. According to <http://www.gnu.org/licenses/gpl-faq.html#IfLibraryIsGPL>, if I publicly distribute my application (e.g. via SourceForge.net) I must do so using the GNU GPL, since the FOX Toolkit is distributed under that license. Will the Boost Software License allow me to do this? Kind regards, Cromwell Enage __________________________________ Do you Yahoo!? Yahoo! Small Business $15K Web Design Giveaway http://promotions.yahoo.com/design_giveaway/

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