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concept check warnings
by s_j_turner <s_j_turner＠yahoo.co.uk> 02 Jan '03

02 Jan '03

FWIW, I just started looking at Jeremy Siek's concept checking tools, and my compiler(*) came up with a warning about name hiding which is trivial to fix. I was using ContainerConcept, and it uses a method argument with the same name as a data member. The fix looks like: *** concept_check.hpp Fri Dec 27 16:51:51 2002 --- concept_check.hpp Thu Jan 2 16:13:03 2003 *************** *** 708,719 **** function_requires< AssignableConcept<Container> >(); const_constraints(c); } ! void const_constraints(const Container& c) { ! i = c.begin(); ! i = c.end(); ! n = c.size(); ! n = c.max_size(); ! b = c.empty(); } Container c; bool b; --- 708,719 ---- function_requires< AssignableConcept<Container> >(); const_constraints(c); } ! void const_constraints(const Container& cc) { ! i = cc.begin(); ! i = cc.end(); ! n = cc.size(); ! n = cc.max_size(); ! b = cc.empty(); } Container c; bool b; There are a few other classes in there which do the same thing, but this is the only one I'm currently using. --- (*) Sun Forte 6.2.1

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RE: [Boost-Users] Re: Simple boost program throws exception
by Tom Matelich 02 Jan '03

02 Jan '03

I don't have too much advice except a) try the latest boost b) put a try/catch block around the code, figure out what function is calling and what exception is being thrown. > -----Original Message----- > From: ksaleh2 <ksaleh2(a)yahoo.com> [mailto:ksaleh2@yahoo.com] > Sent: Wednesday, January 01, 2003 9:21 AM > To: Boost-Users(a)yahoogroups.com > Subject: [Boost-Users] Re: Simple boost program throws exception > > > Hi, > > On December 7th I've posted this message, which unfortunately didn't > get any reply. I'm not a professional programmer, so forgive me if it > is a silly question, but your cooperation will help me understand > boost better, thank you and happy new year to all. > > --- In Boost-Users(a)yahoogroups.com, "ksaleh2 <ksaleh2@y...>" > <ksaleh2@y...> wrote: > > I'm trying boost for the first time on Codewarrior 8.0 for windows. > > The Boost version is 1.25.1 from the "Boost Graph Library" > > accompanying CD. The offensive code is : > > > > #include <boost/config.hpp> > > #include <iostream> > > > > #include <boost/graph/adjacency_list.hpp> > > > > using namespace boost; > > using namespace std; > > > > > > int main() > > { > > typedef adjacency_list<vecS,vecS,directedS, > > property < vertex_name_t, char > >,property<edge_weight_t,double> > > > Graph; > > > > property_map < Graph, vertex_name_t >::type name_map ; > > property_map < Graph, edge_weight_t >::type value_map ; > > > > Graph g; > > > > typename graph_traits<Graph>::vertex_descriptor a,b; > > > > a = add_vertex(g); name_map[a] = 'a'; > > b = add_vertex(g); name_map[b] = 'b'; > > > > typename graph_traits<Graph>::edge_descriptor ed; > > bool inserted; > > > > tie(ed, inserted) = add_edge(a, b, g); > > value_map[ed] = 1.2; > > > > > > return 0; > > } > > > > > > If the second template parameter for class VertexListS is replaced > > with listS it compiles and run normally. > > > > typedef adjacency_list<vecS,listS,directedS, > > property < vertex_name_t, char > >,property<edge_weight_t,double> > > > Graph; > > > > Can you please advise why? > > > > Best Regards > > > > ------------------------ Yahoo! Groups Sponsor > ---------------------~--> > Flexible Keyboard is the ideal accessory for PDA users that > are on the move. > http://us.click.yahoo.com/dCBVZC/WnCFAA/xGHJAA/EbFolB/TM > -------------------------------------------------------------- > -------~-> > > Info: <http://www.boost.org> > Wiki: <http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl> > Unsubscribe: <mailto:boost-users-unsubscribe@yahoogroups.com> > > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ ----------------------------------------------------------------------- DISCLAIMER: Information contained in this message and/or attachment(s) may contain confidential information of Zetec, Inc. If you have received this transmission in error, please notify the sender by return email. -----------------------------------------------------------------------

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Error in testing tuple
by agiatojon <JonAgiato＠nyc.rr.com> 01 Jan '03

01 Jan '03

Happy Holidays to everyone! I am getting aquainted with the tuple class but am encountering the following error: c:\BGL\boost_1_29_0\boost\tuple\tuple_comparison.hpp(119): error C2027: use of undefined type 'boost::STATIC_ASSERTION_FAILURE<x>' with [ x=false ] with the following program: /** * tupleTest.cpp * Test of Boost library class tuple * A tuple is a fixed size collection of elements * Stored objects may be of different types * Current support of tuples with 0-10 objects * Objects may be any valid C++ type except void and function types * Jon Agiato * 12-23-02 */ #include <iostream> using std::cout; using std::cin; using std::ostream; using std::cerr; #include <cstdlib> #include <boost/tuple/tuple.hpp> using boost::tuple; // both tuple_io.hpp and tuple_comparison.hpp include tuple.hpp // tuple_io must be included for tuple input and output operators #include <boost/tuple/tuple_io.hpp> // tuple_comparison.hpp must be included for comparison operators #include <boost/tuple/tuple_comparison.hpp> #include <string> using std::string; #include <exception> using std::exception; class A { friend ostream &operator<<(ostream &output, const A &a) { output << a.S; return output; } public: A(string s = "Testing"):S(s) {;} string S; }; class B { friend ostream &operator<<(ostream &output, const B &b) { output << b.D; return output; } public: B(double d = 3.501):D(d) {;} double D; }; class C { friend ostream &operator<<(ostream &output, const C &c) { output << c.state; return output; } public: C(bool st = true):state(st) {;} double state; }; int main() { try { tuple<A, B, C> testTuple; cout << testTuple << '\n'; tuple<B, A> test2Tuple; if(testTuple == test2Tuple) cout << testTuple << " is equal to " << test2Tuple << '\n'; else cout << testTuple << " is not equal to " << test2Tuple << '\n'; cout << "Press enter to exit..."; cin.get(); return EXIT_SUCCESS; } catch(const exception &E) { cerr << "Standard library exception: " << E.what() << '\n'; return EXIT_FAILURE; } catch(...) { cerr << "Unknown exception thrown.\n"; return EXIT_FAILURE; } } I am using Visual Studio.NET Enterprise Architect Thanks! Jon Agiato JonAgiato(a)nyc.rr.com

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Simple boost program throws exception
by ksaleh2 <ksaleh2＠yahoo.com> 01 Jan '03

01 Jan '03

I'm trying boost for the first time on Codewarrior 8.0 for windows. The Boost version is 1.25.1 from the "Boost Graph Library" accompanying CD. The offensive code is : #include <boost/config.hpp> #include <iostream> #include <boost/graph/adjacency_list.hpp> using namespace boost; using namespace std; int main() { typedef adjacency_list<vecS,vecS,directedS, property < vertex_name_t, char >,property<edge_weight_t,double> > Graph; property_map < Graph, vertex_name_t >::type name_map ; property_map < Graph, edge_weight_t >::type value_map ; Graph g; typename graph_traits<Graph>::vertex_descriptor a,b; a = add_vertex(g); name_map[a] = 'a'; b = add_vertex(g); name_map[b] = 'b'; typename graph_traits<Graph>::edge_descriptor ed; bool inserted; tie(ed, inserted) = add_edge(a, b, g); value_map[ed] = 1.2; return 0; } If the second template parameter for class VertexListS is replaced with listS it compiles and run normally. typedef adjacency_list<vecS,listS,directedS, property < vertex_name_t, char >,property<edge_weight_t,double> > Graph; Can you please advise why? Best Regards

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Success stories
by Miki_Tebeka＠amat.com 01 Jan '03

01 Jan '03

Hello All, I'm trying to convince my boss to use boost. Any helpful success stories/big users/anything that can help? 10x. Bye. ----------------------------------------------------------------------------- Smile, damn it, smile. lambda msg: { 'name' : 'Miki Tebeka', 'email' : 'miki_tebeka(a)amat.com', 'url' : 'http://www.cs.bgu.ac.il/~tebeka', 'quote' : 'The only difference between children and adults is the price of the toys' }[msg]

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shared_ptr and VC++ .net
by mwong <cmwong＠cedara.com> 30 Dec '02

30 Dec '02

Hi, I was trying to compile the following code using VC++ .NET. #include "stdafx.h" #include "boost/smart_ptr.hpp" int _tmain(int argc, _TCHAR* argv[]) { boost::shared_ptr<int> spc = new int(0); return 0; } I got the following error messages: c:\boost\smart_ptr.hpp(375) : error C2065: 'T' : undeclared identifier c:\boost\smart_ptr.hpp(375) : error C2687: cannot define a nested UDT of a template class out of line c:\boost\smart_ptr.hpp(375) : fatal error C1903: unable to recover from previous error(s); stopping compilation The offending code in smart_ptr.hpp is: template<typename T> struct less< boost::shared_ptr<T > > //..... LINE 375 : binary_function<boost::shared_ptr<T>, boost::shared_ptr<T>, bool> { bool operator()(const boost::shared_ptr<T>& a, const boost::shared_ptr<T>& b) const { return less<T*>()(a.get(),b.get()); } }; Can someone please tell me what is the problem? I was able to compile the same code using VC++ 6.0. Thanks. Ming

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RE: [Boost-Users] Re: boost::date_time : iterator model
by Jeff Garland 30 Dec '02

30 Dec '02

Dave A wrote: > Jeff, I remember discussing this with you at Oopsla last year -- why > not use the iterator adaptors library to help you build correct > iterators? Bad excuses only. The first date iterators pre-dated iterator adaptors. When I sat down to convert things over it was 'less-than easy'. I read the docs and experimented, but couldn't get things working -- this might have been related to 2.9x series of compilers I was using at the time, but no matter. When I ran out of patience I just dropped it and never got back to it. It has been on my 'todo' list ever since... Jeff

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RE: [Boost-Users] mpl::for_each
by Aleksey Gurtovoy 30 Dec '02

30 Dec '02

Oleg Grunin wrote: > It would be useful IMHO if mpl::for_each took its functor argument by > reference or better yet, became aware of boost::reference_wrapper. Done, the latter, check out the CVS. Thanks for the suggestion! Aleksey

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Error when I tried to compile an example
by g9news02 <g9news02＠yahoo.com.au> 30 Dec '02

30 Dec '02

Hi all, I tried to compile an example provided with the Boost date time library but kept getting the following error message: "/pssource/current/thirdparty/boost/boost_1_29_0/boost/type_traits/is_void.hpp", line 23: Warning: Too few arguments in macro BOOST_PP_CHECK_2. "/pssource/current/thirdparty/boost/boost_1_29_0/boost/type_traits/is_void.hpp", line 23: Error: BOOST_PP_LIST_FOR_EACH_I_M is not defined. "/pssource/current/thirdparty/boost/boost_1_29_0/boost/type_traits/is_void.hpp", line 23: Error: Use ";" to terminate declarations. "/pssource/current/thirdparty/boost/boost_1_29_0/boost/type_traits/is_void.hpp", line 23: Error: Use ";" to terminate declarations. "/pssource/current/thirdparty/boost/boost_1_29_0/boost/type_traits/is_void.hpp", line 26: Warning: Too few arguments in macro BOOST_PP_CHECK_2. "/pssource/current/thirdparty/boost/boost_1_29_0/boost/type_traits/is_void.hpp", line 26: Warning: Too few arguments in macro BOOST_PP_CHECK_2. "/pssource/current/thirdparty/boost/boost_1_29_0/boost/type_traits/is_void.hpp", line 26: Warning: Too few arguments in macro BOOST_PP_CHECK_2. "/pssource/current/thirdparty/boost/boost_1_29_0/boost/type_traits/is_void.hpp", line 26: Error: BOOST_PP_LIST_FOR_EACH_I_M is not defined. "/pssource/current/thirdparty/boost/boost_1_29_0/boost/type_traits/is_void.hpp", line 26: Error: Use ";" to terminate declarations. "/pssource/current/thirdparty/boost/boost_1_29_0/boost/type_traits/is_void.hpp", line 26: Error: Use ";" to terminate declarations. "/pssource/current/thirdparty/boost/boost_1_29_0/boost/type_traits/is_void.hpp", line 27: Warning: Too few arguments in macro BOOST_PP_CHECK_2. Does anyone know how to fix the problem. Thanks in advance.

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type_traits/is_convertible crashes Forte 6.2u2 and Forte 7.0
by Robert A. Reece 29 Dec '02

29 Dec '02

I put the following line in a file (it's the only line...) #include <boost/type_traits/is_convertible.hpp> And compiled as such: CC -I$BOOST temp.cpp Under both Forte 6.2u2 (running under Solaris 8) and Forte 7.0 (solaris 9), it produces the following: /hades02/pega/pegdevlcl/work> CC -I$PEGDEV3RD/boost/1.29.0 temp.cpp >> Assertion: (../links/init.cc, line 957) while processing /tsgnt1/pegdevsrc/3rd/src/boost/1.29.0/boost/type_traits/is_convertible.hpp at line 118. Has anybody else seen this? I checked the latest CVS archive and didn't see any updates to this file. The odd thing is that line 118 is blank. Thanks -Rob

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