November 2010 - Boost - lists.preview.boost.org

[multi_index] scalar insert interface
by Maxim Yegorushkin 08 Nov '10

08 Nov '10

Hey guys, In ordered_index there are two scalar insert overloads: std::pair<iterator,bool> insert(const value_type& x); iterator insert(iterator position,const value_type& x); The second version is lacking the bool result, which is sometimes required. In my source code of boost-1_42 I patched the second version like this: ==== .../ordered_index.hpp#2 (text) ==== @@ -97,6 +99,16 @@ struct ordered_unique_tag{}; struct ordered_non_unique_tag{}; +template<class T, class U> +struct auto_cast_pair : std::pair<T, U> +{ + typedef std::pair<T, U> base_pair; + auto_cast_pair(base_pair const& b) : base_pair(b) {} + using base_pair::operator=; + operator T&() { return this->first; } + operator T const&() const { return this->first; } +}; + template< typename KeyFromValue,typename Compare, typename SuperMeta,typename TagList,typename Category @@ -274,14 +286,14 @@ return std::pair<iterator,bool>(make_iterator(p.first),p.second); } - iterator insert(iterator position,value_param_type x) + auto_cast_pair<iterator,bool> insert(iterator position,value_param_type x) { BOOST_MULTI_INDEX_CHECK_VALID_ITERATOR(position); BOOST_MULTI_INDEX_CHECK_IS_OWNER(position,*this); BOOST_MULTI_INDEX_ORD_INDEX_CHECK_INVARIANT; std::pair<final_node_type*,bool> p=this->final_insert_( x,static_cast<final_node_type*>(position.get_node())); - return make_iterator(p.first); + return std::pair<iterator,bool>(make_iterator(p.first),p.second); } template<typename InputIterator> Now it automatically figures which return value one wants. Just an idea. -- Max

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[mpl] map insert
by vicente.botet 08 Nov '10

08 Nov '10

Hi, in /libs/mpl/doc/refmanual/map.html insert<m,x>::type point to the description of insert<m,pos,x>::type. In addition I don't find the descrition of insert<m,x>::type in libs/mpl/doc/refmanual/intrinsic-metafunctions.html Can this be added? Best, _____________________ Vicente Juan Botet Escribá http://viboes.blogspot.com/

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Re: [boost] [Boost-commit] svn:boost r66442 - in trunk/boost: math/tools test test/impl
by Jürgen Hunold 08 Nov '10

08 Nov '10

Hi ! On Sunday, 7. November 2010 21:05:06 admin(a)thefireflyproject.us wrote: > Author: wash > Date: 2010-11-07 15:05:04 EST (Sun, 07 Nov 2010) > New Revision: 66442 > URL: http://svn.boost.org/trac/boost/changeset/66442 > > Log: > Clang hand-holding, mostly for issues caused by Clang defining GCC macros. I do not think that removing the inclusion of "fenv.h" for clang is the right solution. According to http://llvm.org/bugs/show_bug.cgi?id=6907 it is a known compiler bug that clang fails to correctly load "fenv.h" in certain environments (several gcc versions installed...) I've been working around this by simply adding (see below) > Text files modified: > trunk/boost/math/tools/config.hpp | 2 +- > trunk/boost/test/execution_monitor.hpp | 15 ++++++++------- > trunk/boost/test/impl/execution_monitor.ipp | 18 +++++++++--------- > 3 files changed, 18 insertions(+), 17 deletions(-) > > Modified: trunk/boost/math/tools/config.hpp > =========================================================================== > === --- trunk/boost/math/tools/config.hpp (original) > +++ trunk/boost/math/tools/config.hpp 2010-11-07 15:05:04 EST (Sun, 07 > Nov 2010) @@ -255,7 +255,7 @@ > } // namespace tools > }} // namespace boost namespace math > > -#if (defined(__linux__) && !defined(__UCLIBC__)) || defined(__QNX__) || > defined(__IBMCPP__) +#if (defined(__linux__) && !defined(__UCLIBC__) && > !defined(__clang__)) || defined(__QNX__) || defined(__IBMCPP__) > > #include <fenv.h> #if defined(__clang__) #include </usr/include/fenvh.> #else for my local working copies. > return ~old_cw & BOOST_FPE_ALL; > -#elif defined(__GLIBC__) && defined(__USE_GNU) > +#elif defined(__GLIBC__) && defined(__USE_GNU) && !defined(BOOST_CLANG) > > ::feclearexcept(BOOST_FPE_ALL); And this actually removes fp-Support from Boost.Test. Not good. Please find a better solution. And/Or mark the relevant places with Todo containing a reference to the clang bug report. Yours, Jürgen -- * Dipl.-Math. Jürgen Hunold ! Ingenieurgesellschaft für * voice: ++49 511 262926 57 ! Verkehrs- und Eisenbahnwesen mbH * fax : ++49 511 262926 99 ! Lister Straße 15 * juergen.hunold(a)ivembh.de ! www.ivembh.de * * Geschäftsführer: ! Sitz des Unternehmens: Hannover * Prof. Dr.-Ing. Thomas Siefer ! Amtsgericht Hannover, HRB 56965 * PD Dr.-Ing. Alfons Radtke !

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[mpl] What about wstring, u16string and u32string
by vicente.botet 08 Nov '10

08 Nov '10

Hi, I was considering to use mpl::string to implement chrono_io but I see that there are not the couterparts wstring, u16string and u32string. Without these classes I could not use the mpl strings. Is there a possibility to add these classes to Boost.Mpl? Best, _____________________ Vicente Juan Botet Escribá http://viboes.blogspot.com/

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Re: [boost] [Boost-commit] svn:boost r66441 - in trunk/tools/build/v2: . engine/src engine/src/modules tools
by Jürgen Hunold 08 Nov '10

08 Nov '10

Hi ! On Sunday, 7. November 2010 20:51:11 admin(a)thefireflyproject.us wrote: > Modified: trunk/tools/build/v2/engine/src/modules/order.c > =========================================================================== > === --- trunk/tools/build/v2/engine/src/modules/order.c (original) +++ > trunk/tools/build/v2/engine/src/modules/order.c 2010-11-07 14:51:05 > EST (Sun, 07 Nov 2010) @@ -50,8 +50,8 @@ > > if (colors[adjacent_vertex] == white) > do_ts(graph, adjacent_vertex, colors, result_ptr); > - else if (colors[adjacent_vertex] == gray) > - ; /* This is loop. Not sure what to do... */ > + //else if (colors[adjacent_vertex] == gray) > + //; /* This is loop. Not sure what to do... */ > } > colors[current_vertex] = black; > **result_ptr = current_vertex; Are you sure that you really wanted to commit this ? Yours, Jürgen -- * Dipl.-Math. Jürgen Hunold ! Ingenieurgesellschaft für * voice: ++49 511 262926 57 ! Verkehrs- und Eisenbahnwesen mbH * fax : ++49 511 262926 99 ! Lister Straße 15 * juergen.hunold(a)ivembh.de ! www.ivembh.de * * Geschäftsführer: ! Sitz des Unternehmens: Hannover * Prof. Dr.-Ing. Thomas Siefer ! Amtsgericht Hannover, HRB 56965 * PD Dr.-Ing. Alfons Radtke !

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Re: [boost] [ptr_container] [1.45] you own a showstopper
by Thorsten Ottosen 07 Nov '10

07 Nov '10

Den 07-11-2010 23:05, Eric Niebler skrev: > Thorsten, > > The following bug in ptr_container is marked as a Showstopper for the > 1.45 release. What are your plans for it? If you're planning on fixing > it, can you do so soon? If you feel it is not a showstopper, can you set > its priority appropriately? > > https://svn.boost.org/trac/boost/ticket/4598 Should hav been fixed for a day or more. -Thorsten

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[ptr_container] [1.45] you own a showstopper
by Eric Niebler 07 Nov '10

07 Nov '10

Thorsten, The following bug in ptr_container is marked as a Showstopper for the 1.45 release. What are your plans for it? If you're planning on fixing it, can you do so soon? If you feel it is not a showstopper, can you set its priority appropriately? https://svn.boost.org/trac/boost/ticket/4598 Thanks, -- Eric Niebler BoostPro Computing http://www.boostpro.com

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[property_tree] [1.44] you own a showstopper
by Eric Niebler 07 Nov '10

07 Nov '10

Sebastian, The following bug in property_tree is marked as a Showstopper for the 1.44 release. What are your plans for it? If you're planning on fixing it, can you do so soon? If you feel it is not a showstopper, can you set its priority appropriately? Thanks, -- Eric Niebler BoostPro Computing http://www.boostpro.com

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[function] does calling boost::function from boost::function involve nested virtual calls?
by Mostafa 07 Nov '10

07 Nov '10

Hi all, Correct me if I'm wrong, using boost::function involves a virtual function call. If so, then does nesting boost::function calls result in nested (multiple) virtual function calls? For example: int foo(float); boost::function<int (float)> f1 = foo; boost::function<double (int)> f2 = f1; Does f2(5) result in two virtual functions being called on the part of boost::function? (I couldn't find the answer in the documentation and reading the source code I got lost in the macros.) Thanks, Mostafa

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[build] print test failing on release
by Eric Niebler 06 Nov '10

06 Nov '10

Volodya, can you investigate the failure of the Boost.build "print" test on the release branch? It's currently failing across all platforms. Thanks, -- Eric Niebler BoostPro Computing http://www.boostpro.com

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