- Boost - lists.boost.org

Re: [boost] Re: Re: Re: [indexed_set] revised naming proposal
by JOAQUIN LOPEZ MU?Z 15 Apr '04

15 Apr '04

----- Mensaje original ----- De: Rob Stewart <stewart(a)sig.com> Fecha: Miércoles, Abril 14, 2004 7:25 pm Asunto: Re: [boost] Re: Re: Re: [indexed_set] revised naming proposal [...] > > Don't forget "indices" or "indexes" in lieu of "index_list." > > multi_index_container > < > employee, > indices< > ordered_unique<member<employee,string,&employee::name> >, > ordered_non_unique<member<employee,int,&employee:age> >, > > > > If I decided to rename index_list as indices: what would be your proposal for mpl_index_list? Leave it like that? (check the MPL section on the advanced topics page, in case you don't know about this construct.) Best, Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

6 5

Big integer library
by Richard Peters 15 Apr '04

15 Apr '04

Hello, A few months ago there was some discussion about an arbitrary magnitude integer library. I have now implemented such a library, which is located at http://groups.yahoo.com/group/boost/files/big_integer/. There are a few (incomplete) other libraries that provide the same kind of functionality. The main difference between this library and other libraries is that this library uses expression templates to avoid the creation of temporary values, which when the values become large provide an increase in performance. The library is not finished yet: most noticeably the test files are far from complete, but there are also a few others things like the documentation looks a bit ugly. Also a to-do is replacing the core operations like addition and multiplication by more efficient ones, and provide options to use external libraries like GNU MP. I am presenting you already with this library though, to see if it meets the desires for this kind of library, to see if there are things missing in this library, and maybe get some help from other members interested in further developing this library. best regards, Richard Peters

2 1

Re: reference binding
by Dill, John 15 Apr '04

15 Apr '04

> So in summary, you weren't confused about how the library works; you > just were unhappy that you had no justification for how it works. > That lends no credence to your claim that "the counter-intuitiveness > of the semantics will lead to subtle bugs in people's code who > misunderstand or forget bind's behavior in this area." Alright. > P.S. if you want to understand the justification, see > http://std.dkuug.dk/jtc1/sc22/wg21/docs/papers/2002/n1385.htm Thanks, John

1 0

suggestion on Serialization Library
by Allen Yao 15 Apr '04

15 Apr '04

It is not very convenient for me to use macros like BOOST_SERIALIZATION_SPLIT_FREE, BOOST_SERIALIZATION_SPLIT_MEMBER to deal with splitted load/save functions. Additionally, when dealing with load/save functions of template class, these macros help little. Users also have to read and understand what these macros actually do and write their own serialize function to call split_free or split_member accordingly. I suggest that these implementation details on how the serialization library determine to use single serialize function or splitted load/save functions should be totally encapsulated and hidden behind the scene. I suggest that a traits class to be used by the user instead of macros like BOOST_SERIALIZATION_SPLIT_FREE. For example, the traits class can be named "serialization_traits", its default implementation is somthing as follows: template <typename T> struct serialization_traits { static const bool has_split_load_save = false; }; It can be (partially) specialized for types that has split load/save functions. Then, the serialization library can use this traits class to determine whether to call a single serialize function or splitted load/save functions for a specific type. Am I missing something? Best regards. Yao, Zhen

2 1

Re: Big integer library
by Richard Peters 15 Apr '04

15 Apr '04

One note on portability: the example and test file compile under Visual C++ 7.1 and gcc 3.2.2 best regards, Richard Peters ----- Original Message ----- From: "Richard Peters" <r.a.peters(a)student.tue.nl> > Hello, > > A few months ago there was some discussion about an arbitrary magnitude > integer library. I have now implemented such a library, which is located at > http://groups.yahoo.com/group/boost/files/big_integer/. > > There are a few (incomplete) other libraries that provide the same kind of > functionality. The main difference between this library and other libraries > is that this library uses expression templates to avoid the creation of > temporary values, which when the values become large provide an increase in > performance. > > The library is not finished yet: most noticeably the test files are far from > complete, but there are also a few others things like the documentation > looks a bit ugly. Also a to-do is replacing the core operations like > addition and multiplication by more efficient ones, and provide options to > use external libraries like GNU MP. > I am presenting you already with this library though, to see if it meets the > desires for this kind of library, to see if there are things missing in this > library, and maybe get some help from other members interested in further > developing this library. > > best regards, > > Richard Peters >

1 0

[Boost-bugs] [ boost-Bugs-935605 ] constructor of special_values
by SourceForge.net 15 Apr '04

15 Apr '04

Bugs item #935605, was opened at 2004-04-15 13:13 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=107586&aid=935605&group_i… Category: None Group: None Status: Open Resolution: None Priority: 5 Submitted By: andrasiel (andrasiel) Assigned to: Nobody/Anonymous (nobody) Summary: constructor of special_values Initial Comment: I've a problem when trying to use the ptime constructor of special values ptime(special_values sv) Constructor for infinities, not-a-date-time ptime t1(neg_infin); ptime t2(pos_infin); ptime t3(not_a_date_time); gcc does not find this constructor and indeed it is not listed in the candidate list. the exact error is : -------------------------------------------------------- database.cpp:241: error: no matching function for call to ` boost::posix_time::ptime::ptime(boost::date_time::special_values)' /usr/include/boost/date_time/posix_time/ptime.hpp:32: error: candidates are: boost::posix_time::ptime::ptime(const boost::posix_time::ptime&) /usr/include/boost/date_time/posix_time/ptime.hpp:45: error: boost::posix_time::ptime::ptime(const boost::posix_time::int64_time_rep&) /usr/include/boost/date_time/posix_time/ptime.hpp:42: error: boost::posix_time::ptime::ptime(boost::gregorian::date) /usr/include/boost/date_time/posix_time/ptime.hpp:39: error: boost::posix_time::ptime::ptime(boost::gregorian::date, boost::posix_time::time_duration) --------------------------------------------------------- ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=107586&aid=935605&group_i… ------------------------------------------------------- This SF.Net email is sponsored by: IBM Linux Tutorials Free Linux tutorial presented by Daniel Robbins, President and CEO of GenToo technologies. Learn everything from fundamentals to system administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click _______________________________________________ Boost-bugs mailing list Boost-bugs(a)lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/boost-bugs

1 0

[Boost-bugs] [ boost-Bugs-935596 ] to_simple_string link problem
by SourceForge.net 15 Apr '04

15 Apr '04

Bugs item #935596, was opened at 2004-04-15 13:00 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=107586&aid=935596&group_i… Category: None Group: None Status: Open Resolution: None Priority: 5 Submitted By: andrasiel (andrasiel) Assigned to: Nobody/Anonymous (nobody) Summary: to_simple_string link problem Initial Comment: 935571 time_from_string link problem (i'm the anonymous poster of that request ) I tried some other things like conversions from ptime std::string ts("2002-01-20 23:59:59.000"); std::cout<<boost::posix_time::to_iso_string(t1)<<std::endl; std::cout<<boost::posix_time::to_simple_string(t1)<<std::endl; std::cout<<boost::posix_time::to_iso_extended_string(t1)<<std::endl; the conversion from ptime to simple string return also a link error: Linking prog ... database.o(.gnu.linkonce.t._ZN5boost9date_time15month_formatterINS_9gregorian10greg_monthENS0_13simple_formatEE12format_monthERKS3_RSo+0x13): dans la fonction « boost::date_time::month_formatter<boost::gregorian::greg_month, boost::date_time::simple_format>::format_month(boost::gregorian::greg_month const&, std::basic_ostream<char, std::char_traits<char> >&)»: : undefined reference to `boost::gregorian::greg_month::as_short_string() const' (conversions to iso and iso extended are working) ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=107586&aid=935596&group_i… ------------------------------------------------------- This SF.Net email is sponsored by: IBM Linux Tutorials Free Linux tutorial presented by Daniel Robbins, President and CEO of GenToo technologies. Learn everything from fundamentals to system administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click _______________________________________________ Boost-bugs mailing list Boost-bugs(a)lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/boost-bugs

1 0

intel-win32 8.x config/ADL problem
by David Abrahams 15 Apr '04

15 Apr '04

Check it out, I can't get the following program to compile, even with -Qoption,c,--arg_dep_lookup: namespace ns1 { class X{}; int swap(X&, X&); } namespace ns2 { template <class T> void swap(T&, T&); } int main() { ns1::X x; using ns2::swap; int y = swap(x,x); } Shouldn't we be setting BOOST_FUNCTION_SCOPE_USING_DECLARATION_BREAKS_ADL for this compiler? It's actually a different bug in some details, I realize, but the macro does say the right thing. Also, where is the test for that macro? I don't see any in libs/config/test. -- Dave Abrahams Boost Consulting www.boost-consulting.com

2 7

regex lib: bug with sets and back ref
by Benzinger, Ralph 15 Apr '04

15 Apr '04

Hello, The following behavior seems to be a bug: * regex '([a-c]+)\1' finds 'abcabc' at offset 0 in text 'abcabc' * regex '([abc]+)\1' finds 'bcbc' at offset 1 in text 'abcbc' * regex '([a-c]+)\1' finds nothing in text 'abcbc' ??? Can anybody confirm this? Tried both POSIX and Perl syntax/match mode. Ralph

2 1

[Boost-bugs] [ boost-Bugs-935571 ] time_from_string link problem
by SourceForge.net 15 Apr '04

15 Apr '04

Bugs item #935571, was opened at 2004-04-15 04:46 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=107586&aid=935571&group_i… Category: None Group: None Status: Open Resolution: None Priority: 5 Submitted By: Nobody/Anonymous (nobody) Assigned to: Nobody/Anonymous (nobody) Summary: time_from_string link problem Initial Comment: I'm using libboost-date-time1.31.0 I have a link error when trying this code example : std::string ts("2002-01-20 23:59:59.000"); boost::posix_time::ptime t(boost::posix_time::time_from_string(ts)); Linking prog ... database.o(.gnu.linkonce.t._ZN5boost9date_time19month_str_to_ushortINS_9gregorian10greg_monthEEEtSs+0x119): dans la fonction « unsigned short boost::date_time::month_str_to_ushort<boost::gregorian::greg_month>(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)»: : undefined reference to `boost::gregorian::greg_month::get_month_map_ptr()' collect2: ld a retourné 1 code d'état d'exécution source : http://www.boost.org/libs/date_time/doc/class_ptime.html ptime time_from_string(const std::string&) >From delimited string. std::string ts("2002-01-20 23:59:59.000"); ptime t(time_from_string(ts)) thank you al_x7(a)hotmail.com ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=107586&aid=935571&group_i… ------------------------------------------------------- This SF.Net email is sponsored by: IBM Linux Tutorials Free Linux tutorial presented by Daniel Robbins, President and CEO of GenToo technologies. Learn everything from fundamentals to system administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click _______________________________________________ Boost-bugs mailing list Boost-bugs(a)lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/boost-bugs

1 0