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Re: [Boost-Users] ublas::matrix sharing storage with ublas::vecto r
by Stephen Crowley 28 Nov '02

28 Nov '02

On Thu, Nov 28, 2002 at 09:12:53AM -0500, Toon Knapen wrote: > On Wednesday 27 November 2002 20:46, Stephen Crowley wrote: > > What do you mean by "just use it as" ? > > > > For example.. I have a matrix<double> m(5,5); > > > > In some code I actually need to use it as a 5x5 matrix.. but other parts > > must reference it as a vector (to pass to another library). > > OK, So as to get to the bottom of this. Do you really want to perform vector … [View More]

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RE: [Boost-Users] ublas::matrix sharing storage with ublas::vecto r
by Scott Sinclair 28 Nov '02

28 Nov '02

Hi Stephen Yes, just use a (1, n) or (n, 1) matrix as appropriate and do matrix operations instead of vector ops. The results will be correct as long as you make sure you have a correctly dimensioned matrix in place of your vector (i.e one that matches your vectors size and orientation). After all a matrix is just a collection of vectors ;-) cheers, Scott On 27/11/2002 05:10, Stephen Crowley wrote > It is possible for a vector and a matrix to share the same storage, as > long as the … [View More]

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RE: [Boost-Users] MSVC++, bind and namespaces
by Antoine Boivin Filion 28 Nov '02

28 Nov '02

Hi, FYI, the code below compiles and runs OK on MSVC++7... so you might just be right! Regards, Antoine -----Original Message----- From: Andre Hentz [mailto:ahentz@cariden.com] Sent: November 28, 2002 09:42 To: Boost-Users(a)yahoogroups.com Subject: [Boost-Users] MSVC++, bind and namespaces I've just encountered this problem and it looks like a MS bug. Not sure it deserves a Boost workaround but I thought it would be nice to let you know (in case you don't already). Here's the code: #… [View More]include <boost/bind.hpp> namespace A{ struct c{ void setName(const char*) {} }; } namespace B{ struct c{ void setName(const char*) {} }; } using namespace B; using namespace A; int main() { boost::bind(&A::c::setName, _1, _2); return 0; } It looks legal to me but I'm no expert. GCC compiles with no warnings but MSVC++ 6sp5 gives the error below. boost/bind/mem_fn_vw.hpp(29) : error C2872: 'c' : ambiguous symbol boost/bind.hpp(875) : see reference to class template instantiation 'boost::_mfi::mf1<void ,struct A::c,char const *>' being compiled boost/bind.hpp(886) : see reference to class template instantiation 'boost::_bi::bind_t_generator<void>::implementation<struct boost::_mfi::mf1<void,struct A::c,char const *>,class boost::_bi::list2<class boost::arg<1>,class boost::arg<2> > >' being compiled test.cpp(15) : see reference to class template instantiation 'boost::_bi::bind_t<void,struct boost::_mfi::mf1<void,struct A::c,char const *>,class boost::_bi::list2<class boost::arg<1>,cla ss boost::arg<2> > >' being compiled boost/bind/mem_fn_vw.hpp(31) : error C2872: 'c' : ambiguous symbol boost/bind.hpp(875) : see reference to class template instantiation 'boost::_mfi::mf1<void,struct A::c,char const *>' being compiled boost/bind.hpp(886) : see reference to class template instantiation 'boost::_bi::bind_t_generator<void>::implementation<struct boost::_mfi::mf1<void,struct A::c,char const *>,class boost::_bi::list2<class boost::arg<1>,class boost::arg<2> > >' being compiled test.cpp(15) : see reference to class template instantiation 'boost::_bi::bind_t<void,struct boost::_mfi::mf1<void,struct A::c,char const *>,class boost::_bi::list2<class boost::arg<1>,class boost::arg<2> > >' being compiled Best, Andre Hentz Yahoo! Groups Sponsor ADVERTISEMENT <http://rd.yahoo.com/M=237459.2675695.4055211.2225243/D=egroupweb/S=17050067 88:HM/A=1267611/R=0/*http://ad.doubleclick.net/jump/N2524.Yahoo/B1071650;sz= 300x250;ord=1038499880908608?> <http://us.adserver.yahoo.com/l?M=237459.2675695.4055211.2225243/D=egroupmai l/S=:HM/A=1267611/rand=601430356> Info: < http://www.boost.org <http://www.boost.org> > Wiki: < http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl <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 the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/> . [Non-text portions of this message have been removed] [View Less]

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Re: [Boost-Users] ublas::matrix sharing storage with ublas::vecto r
by Toon Knapen 28 Nov '02

28 Nov '02

On Wednesday 27 November 2002 20:46, Stephen Crowley wrote: > What do you mean by "just use it as" ? > > For example.. I have a matrix<double> m(5,5); > > In some code I actually need to use it as a 5x5 matrix.. but other parts > must reference it as a vector (to pass to another library). OK, So as to get to the bottom of this. Do you really want to perform vector operations on a vector that consists of a concatenation of all rows (or columns) of the matrix do you want … [View More]

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MSVC++, bind and namespaces
by Andre Hentz 28 Nov '02

28 Nov '02

I've just encountered this problem and it looks like a MS bug. Not sure it deserves a Boost workaround but I thought it would be nice to let you know (in case you don't already). Here's the code: #include <boost/bind.hpp> namespace A{ struct c{ void setName(const char*) {} }; } namespace B{ struct c{ void setName(const char*) {} }; } using namespace B; using namespace A; int main() { boost::bind(&A::c::setName, … [View More]

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Re: [Boost-Users] ublas::matrix sharing storage with ublas::vecto r
by Toon Knapen 28 Nov '02

28 Nov '02

On Wednesday 27 November 2002 20:46, Stephen Crowley wrote: > What do you mean by "just use it as" ? > > For example.. I have a matrix<double> m(5,5); > > In some code I actually need to use it as a 5x5 matrix.. but other parts > must reference it as a vector (to pass to another library). OK, So as to get to the bottom of this. Do you really want to perform vector operations on a vector that consists of a concatenation of all rows (or columns) of the matrix do you want … [View More]

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RE: [Boost-Users] Is intrusive_ptr the thing to use?
by Hickman, Greg 28 Nov '02

28 Nov '02

From: Peter Dimov [mailto:pdimov@mmltd.net] > From: "Hickman, Greg" <greg.hickman(a)lmco.com> > > > From: Peter Dimov [mailto:pdimov@mmltd.net] > > > If 'f' is virtual, have the object store a weak_ptr to itself: > > > > > > class X > > > { > > > private: > > > > > > weak_ptr<X> weak_this; > > > > > > X(); > > > X(X const &); > > > X& operator=(X … [View More]

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RE: [Boost-Users] ublas::matrix sharing storage with ublas::vecto r
by Scott Sinclair 28 Nov '02

28 Nov '02

Sorry, I obviously misunderstood your original question :( On 28/11/2002 03:46 Stephen Crowley wrote: > What do you mean by "just use it as" ? > For example.. I have a matrix<double> m(5,5); > > In some code I actually need to use it as a 5x5 matrix.. but > other parts > must reference it as a vector (to pass to another library). > > Currently I am doing something like this > > matrix<double> m(5,5); > // do stuff to m > vector<double… [View More]

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RE: [Boost-Users] Is intrusive_ptr the thing to use?
by Hickman, Greg 27 Nov '02

27 Nov '02

> -----Original Message----- > From: Peter Dimov [mailto:pdimov@mmltd.net] > Sent: Tuesday, November 26, 2002 6:49 AM > To: Boost-Users(a)yahoogroups.com > Subject: Re: [Boost-Users] Is intrusive_ptr the thing to use? > If 'f' is virtual, have the object store a weak_ptr to itself: > > class X > { > private: > > weak_ptr<X> weak_this; > > X(); > X(X const &); > X& operator=(X const &); > > public: … [View More]

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solaris gcc 3.2 stlport regexp (bug?)
by c_twiner 27 Nov '02

27 Nov '02

Hi all, When I use bjam to compile the regexp library it compiles seems happy and then no code works properly, seg faults, rubbish results etc. When I compile using a modified make file of the shared-gcc.mak (modifications follow): INCLUDES= -I/export/home/ctwiner/STLport-4.5.3/stlport -L/export/home/ctwiner/STLport-4.5.3/lib LIBS= -lstlport_gcc_stldebug # compiler: CXX=g++ LINKER=g++ -shared -fPIC # # compiler options for release build: # C1=-c -O2 -I../../../ -fPIC # # compiler … [View More]

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