February 2011 - Boost-users

Re: [Boost-users] [boost] Boost release 1.46.0 available
by Daniel James 22 Feb '11

22 Feb '11

On 22 February 2011 14:50, KTC <ktc(a)ktchan.info> wrote: > I thought the download link to boost jam is going to be removed from the > front page from this release on so there's no more "Bjam shows all kind of > errors when I tried to build boost"? I don't know what's happening with that. I asked on the build list a little while ago and got no response. If the separate download is no longer current, then it probably also means that the build and jam documentation on the site are out of date. I really do need people to either change these things themselves or let me know what to do. I can't keep up with everything. Daniel

1 0

failed linking boost w/ my code (mac os x snow leo, g++ 4.21)
by ny 22 Feb '11

22 Feb '11

On Tue, Feb 22, 2011 at 3:31 PM, ny <> wrote: > Hi, > > I'm a boost user, but right now I fail testing some code through Netbeans > IDE (and yes I 've posted there as well). > The inclusion w/ the foreach.hpp I need fails -> warning: > boost/foreach.hpp: No such file or directory. > > I 've added #include <boost/foreach.hpp> in my code, > export > PATH=$PATH:/opt/local/var/macports/software/boost/1.45.0_1/opt/local/include > > (installed via macports) in my path but it fails. > > Note that linking by adding the > -I /opt/local/var/macports/software/boost/1.45.0_1/opt/local/include > directive from cmd line is possible. > (and by the way I've been told that the path given above is an > intermediate directory of macports, not the proper one... > I am not sure about this, all other libs I use installed via macports work > just fine with a single path inclusion). > Back to the Netbeans issue, I 've added the Boost include path to Code > Assistance >> C++ > and at least the unresolved symbols in the IDE disappeared > > I'm on mac os x snow leo, g++ 4.21. > thanks for any pointers > > Nikos Yiotis > Chat Skype: nyiotis > Contact Me [image: Linkedin]<http://my.wisestamp.com/link?u=ws7c27w2vnrx4d2b&site=www.linkedin.com/in/yi…> > > > >

1 0

Re: [Boost-users] [boost] Boost release 1.46.0 available
by Beman Dawes 22 Feb '11

22 Feb '11

On Tue, Feb 22, 2011 at 8:33 AM, Sergey Zubkovsky <sergzub(a)gmail.com> wrote: > http://www.boost.org/users/download/version_1_46_0 > > Not Found > > The requested URL /users/download/version_1_46_0.html was not found on this > server. Seems to be working now. Thanks, Daniel --Beman

1 0

Re: [Boost-users] [boost] Boost release 1.46.0 available
by Daniel James 22 Feb '11

22 Feb '11

On 22 February 2011 13:11, Jeff Flinn <TriumphSprint2000(a)hotmail.com> wrote: > FYI - the website 1.46 docs link points to 1.45 docs Sorry about that, it's fixed now.

1 0

[regex] link problem with MSVC
by Thomas Mang 22 Feb '11

22 Feb '11

HI, I had built boost version 1.40 (some time ago) myself with MSVC 2008 Express, a complete build. I now wanted to use the regex library; I left the default option of statically linking it in (no #define BOOST_REGEX_DYN_LINK) and also count on auto-linking (no BOOST_REGEX_NO_LIB). Using regex_search, I keep getting linker errors: Error 1 error LNK2019: unresolved external symbol "__declspec(dllimport) public: void __thiscall std::_Container_base::_Orphan_all(void)const " (__imp_?_Orphan_all@_Container_base@std@@QBEXXZ) referenced in function "public: class std::vector<struct boost::sub_match<char const *>,class std::allocator<struct boost::sub_match<char const *> > > & __thiscall std::vector<struct boost::sub_match<char const *>,class std::allocator<struct boost::sub_match<char const *> > >::operator=(class std::vector<struct boost::sub_match<char const *>,class std::allocator<struct boost::sub_match<char const *> > > const &)" (??4?$vector@U?$sub_match@PBD@boost@@V?$allocator@U?$sub_match@PBD@boost@@@std@@@std@@QAEAAV01@ABV01@@Z) libboost_regex-vc90-mt-gd-1_40.lib Error 2 error LNK2019: unresolved external symbol "__declspec(dllimport) public: __thiscall std::_Container_base::~_Container_base(void)" (__imp_??1_Container_base@std@@QAE@XZ) referenced in function "public: __thiscall std::_Vector_val<struct boost::sub_match<char const *>,class std::allocator<struct boost::sub_match<char const *> > >::~_Vector_val<struct boost::sub_match<char const *>,class std::allocator<struct boost::sub_match<char const *> > >(void)" (??1?$_Vector_val@U?$sub_match@PBD@boost@@V?$allocator@U?$sub_match@PBD@boost@@@std@@@std@@QAE@XZ) libboost_regex-vc90-mt-gd-1_40.lib and some more others. Me doing something wrong or a boost issue ? I tried to disable auto-linking and specifiy the lib (libboost_regex-vc90-mt-gd-1_40.lib for debug build) myself but it does not seem to link it in statically (wants the DLL on startup). many thanks and best, Thomas

2 3

[BGL] Determining the properties bundle type
by Shaun Jackman 22 Feb '11

22 Feb '11

Hi, What's the best way to determine the properties bundle type? G::vertex_bundled vertex_bundle_type<G>::type property_map_value<G, vertex_bundle_t> I'm trying to determine the type that will be returned by g[u] where g is a graph and u is a vertex_descriptor. Thanks, Shaun

2 1

Re: [Boost-users] UPDATE rules
by spamjunk 21 Feb '11

21 Feb '11

Sure, why worry about backwards compatibility. When is that ever important? Guess I'll stick with .17.

1 0

Re: [Boost-users] UPDATE rules
by spamjunk 21 Feb '11

21 Feb '11

> I thought that's how Boost.Build always worked. That *may* be how Boost.Build works. I don't know. I don't use it. I only use BJAM. Version 3.1.18 added these lines to jam.c: if (!targets_to_update()) mark_target_for_updating("all"); Thus, if no target is defined on the command line, it force it to "all." These lines do not exist in 3.1.17.

2 1

Re: [Boost-users] Determine at compile time whether type has subtraction semantics?
by Raymond Burkholder 21 Feb '11

21 Feb '11

> On 19/02/11 06:51, Frédéric Bron wrote: > >> Is it possible to determine at compile-time if a type has subtraction > >> semantics? E.g. in struct A<T> I would like to decide at compile-time not > to > >> execute&A::subtract in the register_fns method. Then the subtract > method is > >> not instantiated and there is no error. > Is there any way to do use the type traits to conditionally compile some > code using some brief syntax? I.e. it would be nice if something like > the following worked: > I think you are looking for something along the lines of what is suggested "An Optimized Version of std::copy" in the type_traits examples. http://www.boost.org/doc/libs/1_45_0/libs/type_traits/doc/html/boost_typetra its/examples/copy.html It provides conditional compilation via a form of template indirection/selection. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.

2 1

Determine at compile time whether type has subtraction semantics?
by John Reid 21 Feb '11

21 Feb '11

Is it possible to determine at compile-time if a type has subtraction semantics? E.g. in struct A<T> I would like to decide at compile-time not to execute &A::subtract in the register_fns method. Then the subtract method is not instantiated and there is no error. template< typename T > struct A { void register_fns() { &A::subtract; } T subtract( T x, T y ) { return x - y; } }; void test() { A< int >().register_fns(); // int: Fine A< std::string >().register_fns(); // string: Compile error } I didn't see anything in Boost.TypeTraits Thanks, John.

4 9