March 2006 - Boost - lists.preview.boost.org

Re: [boost] [quickbook] [MPL] Knowing where you are the wrong way
by David Abrahams 23 Mar '06

23 Mar '06

Joel de Guzman <joel(a)boost-consulting.com> writes: >>>AFAICT, there is no way to know that if the heading itself is >>>not self linked. >> Sure there is. You click the link, which takes you to a page with a >> TOC entry that points to the heading. Then you right-click the TOC >> entry and copy the link location. > > No! Try to get the "Invariants" heading in that page. You > can't. It is not listed in your TOCs to begin with. I don't have a big problem with self-linking for a heading that isn't in the TOC. >>>The only way is to link to the page and say, "ok, please go to >>>link http://tinyurl.com/omouw and see section Invariants." How >>>usable is that? The user will have to search a potentially long >>>page for the particular /Invariants/ section. 1) Imagine if the >>>page is long. 2) What if there are more than one /Invariants/ >>>in various sub-sections? >> Yes, it's a useful tool. I just think it's worth one more click >> from >> you in order to make the link generally useful for browsing users. > > Even if "Invariants" is listed in your TOC, then you still have > a problem. Imagine that you have all your functions doc'd in > a section. Imagine all those functions have an "Invariant" > subsection. I click the "Invariant" heading, it leads me to the > TOC, I find a long list with lots of headings with the same > "Invariants" title. Which will I choose? The one right at the top of the window (unless the page is short, in which case it takes a little care). > I'll have to look carefully. That's what I mean by error prone. It's only error-prone for the person trying to capture a link to the section header. The person browsing who wants to see the current context doesn't try to grab that link, so there's no error. Maybe the only right way to resolve this in the end is to get Jonathan Turkanis' menu control integrated with BoostBook. -- Dave Abrahams Boost Consulting www.boost-consulting.com

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[Boost-bugs] [ boost-Bugs-1456780 ] ambiguous overloads in boost::variant source code
by SourceForge.net 23 Mar '06

23 Mar '06

Bugs item #1456780, was opened at 2006-03-23 01:00 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=1456780&group_… Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: None Group: None Status: Open Resolution: None Priority: 5 Submitted By: Nobody/Anonymous (nobody) Assigned to: Nobody/Anonymous (nobody) Summary: ambiguous overloads in boost::variant source code Initial Comment: I cannot figure out, why the following little program does not compile. It simply typedefs a variant of a specific bounded type set and then derives a class from this type. I've tried to compile it with VC 2005. It does not compile because of ambiguous overloads within the boost::variant source. It would be very helpful if somebody could shed light on the issue. Best regards Peter PS: I intended to post this to the boost developers list, but I was unable to log onto the list today. ************************************************************* #include <boost/variant.hpp> typedef boost::variant<char, int, double> numeric_type_variant; class numeric_type : public numeric_type_variant { public: /// Default constructor. numeric_type() : numeric_type_variant() { } template <typename T> /// Converting constructor. numeric_type(T const& t) : numeric_type_variant(t) { } // some more code }; int main(int argc, char* argv[]) { char ba; int bb; double bc; numeric_type a; numeric_type b(ba); numeric_type c(bb); numeric_type d(bc); a = ba; a = bb; a = bc; return 0; } ************************************************************* This is the build log: ------ Build started: Project: test_variant, Configuration: Debug Win32 ------ Compiling... test_variant.cpp c:\_ngi\toolkits\boost_1_33_1\boost\variant\variant.hpp(1342) : error C2666: 'boost::variant<T0_,T1,T2>::convert_construct' : 2 overloads have similar conversions with [ T0_=char, T1=int, T2=double ] c:\_ngi\toolkits\boost_1_33_1\boost\variant\variant.hpp(1327): could be 'void boost::variant<T0_,T1,T2>::convert_construct<char,int,double,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_,boost::detail::variant::void_>(const boost::variant<T0_,T1,T2> &,long)' with [ T0_=char, T1=int, T2=double ] c:\_ngi\toolkits\boost_1_33_1\boost\variant\variant.hpp(1258): or 'void boost::variant<T0_,T1,T2>::convert_construct<const T>(T &,int,boost::mpl::false_)' with [ T0_=char, T1=int, T2=double, T=numeric_type ] while trying to match the argument list '(const numeric_type, long)' c:\_ngi\toolkits\boost_1_33_1\boost\variant\variant.hpp(1580) : see reference to function template instantiation 'boost::variant<T0_,T1,T2>::variant<T>(const T &)' being compiled with [ T0_=char, T1=int, T2=double, T=numeric_type ] c:\_ngi\toolkits\boost_1_33_1\boost\variant\variant.hpp(1590) : see reference to function template instantiation 'void boost::variant<T0_,T1,T2>::assign<T>(const T &)' being compiled with [ T0_=char, T1=int, T2=double, T=numeric_type ] c:\_schrott\test_variant\test_variant\test_variant.cpp(36) : see reference to function template instantiation 'boost::variant<T0_,T1,T2> &boost::variant<T0_,T1,T2>::operator =<numeric_type>(const T &)' being compiled with [ T0_=char, T1=int, T2=double, T=numeric_type ] Build log was saved at "file://c:\_schrott\test_variant\test_variant\Debug\BuildLog.htm" test_variant - 1 error(s), 0 warning(s) ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=107586&aid=1456780&group_… ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 _______________________________________________ Boost-bugs mailing list Boost-bugs(a)lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/boost-bugs

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[1.34] Release Branch
by Thomas Witt 23 Mar '06

23 Mar '06

FYI, we now have a RC_1_34_0 branch. Please focus on resolving the remaining issues on this branch. Thanks Thomas -- Thomas Witt witt(a)acm.org

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Duplicates (was: [Boost-docs] [quickbook] [MPL] Knowing where you are the wrong way)
by David Abrahams 22 Mar '06

22 Mar '06

Daryle Walker <darylew(a)hotmail.com> writes: <snip> Daryle, We're seeing duplicate copies of all your messages. I assume that's because you'resending to both the mailing list and the newsgroup. If so, could you please pick just one? -- Dave Abrahams Boost Consulting www.boost-consulting.com

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[Boost-bugs] [ boost-Feature Requests-1456429 ] make portable stdint.h from boost code
by SourceForge.net 22 Mar '06

22 Mar '06

Feature Requests item #1456429, was opened at 2006-03-22 13:01 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=357586&aid=1456429&group_… Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: config Group: None Status: Open Resolution: None Priority: 5 Submitted By: Nobody/Anonymous (nobody) Assigned to: John Maddock (johnmaddock) Summary: make portable stdint.h from boost code Initial Comment: There appears to be an industry-wide need for a good, portable stdint.h library, compatible with the C99 standard. boost.org has the knowledge to create such a header, based on their current stdint.hpp header and associated code. However, what is needed is a C-compatible version that could be used in any environment. boost.org would be doing developers a big favor if it could adapt its existing stdint.hpp header to a C-compatible C99 compliant stdint.h header. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=357586&aid=1456429&group_… ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 _______________________________________________ Boost-bugs mailing list Boost-bugs(a)lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/boost-bugs

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MPC support for Boost
by Kevin Heifner 22 Mar '06

22 Mar '06

After seeing some posts about people having difficulties building Boost with bjam and Dave Abrahams comment about wishing to add Microsoft solution files as an alternative build option. OCI decided to add MPC (http://www.ociweb.com/products/mpc) support to Boost. Chad Elliott the creator of MPC put together the zip file in Boost Vault under Miscellaneous which contains the necessary files to add MPC support to Boost. Here is a little description of the addition. It would be great if this could be added to Boost and something similar to this description added to the getting started web page. Building Boost using bjam is straightforward and easy to use for those used to building applications with make. However, for those who have little or no exposure to make may find building Boost with bjam somewhat confusing or difficult. The MPC application can be used to provide an alternate build mechanism for the Boost libraries. MPC (http://www.ociweb.com/products/mpc) can generate makefiles and projects for various build tools (make, Visual C++ 6.0, Visual Studio 7.1, etc.) Allowing users to choose their favorite build tool increases the appeal of Boost. We have put together boost.mwc (a workspace), a set of mpc files (projects) and a simple perl based configure script that allows MPC to generate a usable workspace (with projects) to build various libraries located in Boost. This perl based configure script is used to set up various required environment variables and then runs MPC. It takes a few options (most (coicide with the existing configure shell script), one of which is the --with-toolset option that converts the Boost toolset into the corresponding MPC options. The result of building Boost with MPC will leave the user with a set of libraries located in a "lib" directory at the top of the boost directory tree. The libraries are named as they would be when built with bjam. The current state of the .mwc file and perl based configure script only allows building multi-threaded versions of the Boost libraries. This is not meant to replace bjam, just provide an alternate way of building Boost. Thanks, KevinH -- Kevin Heifner heifner @ ociweb.com http://heifner.blogspot.com Object Computing, Inc. (OCI) www.ociweb.com

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[iostream] How to compress & decompress wide stream
by Marc VIALA 22 Mar '06

22 Mar '06

Hi, I would like to manage the compression & decompression of wide stream. I have already implemented this functionality for narrow stream by using Boost.Iostream, see the code snippet hereafter, but I'm really too newbie with this library to generalize with wide stream. Any and all help appreciated? <\code snippet> // Compression of narrow stream void compress(std::istream& is, std::ostream& os) { io::filtering_streambuf<io::output> out ; out.push(io::gzip_compressor()) ; out.push(os) ; io::copy(is, out) ; } // Decompression of narrow stream void decompress(std::istream& is, std::ostream& os) { io::filtering_streambuf<io::input> in ; in.push(io::gzip_decompressor()) ; in.push(is) ; io::copy(in, os) ; } <\code snippet> Marc Viala mviala(a)acticm.com

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[xpressive] Range-based interface (was: Re: How about other kinds of lists...)
by João Abecasis 22 Mar '06

22 Mar '06

[moving this thread to the the main Boost list, please don't reply to Boost-Docs.] For the benefit of those who are joining us now, I'm pursuing a range-based interface for Spirit (see my post on Spirit's list http://tinyurl.com/npvnz) Eric Niebler wrote: > João Abecasis wrote: >> Also what is the rationale for singling out std::basic_string (and >> Char const *) instead of going for the more general Range concept? > > Very off-topic here, but I'm just following the TR1 regex spec. Besides, > in the future, Range won't cover Char const *. A Range-based interface > might make for a nice extension to TR1, though. For Spirit, the situation is the same. To circumvent this, I'm locally extending the Range concept to include istreams, fstreams and, when Range drops support for those, string literals. To this end, there's an extensible as_range<T> class template that is specialized to offer automatic conversion of T to a real range. Working code is available through the link above. What do you think of this? Regards, João

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[date-time] test failure (was: Boost.Build v1 broken?)
by David Abrahams 22 Mar '06

22 Mar '06

David Abrahams <dave(a)boost-consulting.com> writes: > Aleksey Gurtovoy <agurtovoy(a)meta-comm.com> writes: > >> Our continuous regressions against CVS HEAD have been failing for the >> last 24 hours or so with the following log: >> >> boost-test(RUN) "date_time/testtime_serialize" : "libs\date_time\test\posix_time\testtime_serialize.cpp" >> boost-test(RUN) "date_time/testtime_serialize_std_config" : "libs\date_time\test\posix_time\testtime_serialize.cpp" >> **** DLLs cannot be built with this compiler and stlport 4.x **** >> **** skipping build of <@boost!libs!serialization!build>boost_serialization.dll; toolset= vc-6_5-stlport variant= debug **** >> C:\Users\Administrator\boost\main\boost\tools/build/v1\boost-base.jam:1585: in find-compatible-subvariant >> *** argument error >> * rule split-target-subvariant ( target-var properties-var toolset-var variant-var : subvariant ) >> * called with: ( sv-target sv-properties sv-toolset sv-variant : ) >> * missing argument subvariant >> C:\Users\Administrator\boost\main\boost\tools/build/v1\boost-base.jam:2032:see definition of rule 'split-target-subvariant' being called > ... >> C:\Users\Administrator\boost\main\boost\tools/build/v1\testing.jam:552: in run >> ..\libs\date_time\test\Jamfile:220: in load-jamfiles >> C:\Users\Administrator\boost\main\boost\tools/build/v1\allyourbase.jam:1764: in SubInclude >> C:\Users\Administrator\boost\main\boost\tools/build/v1\allyourbase.jam:1352: in subinclude >> Jamfile:25: in load-jamfiles >> C:\Users\Administrator\boost\main\boost\tools\build\v1\bootstrap.jam:21: in boost-build >> C:\Users\Administrator\boost\main\boost\boost-build.jam:16: in module scope >> >> Does this ring a bell to anybody? > > I don't know what command-line arguments bjam is being invoked with, > but for me, building in libs/date_time/test works without a hitch. I am, however, getting the following test failure: execute-test c:\tmp\build\v1\bin\boost\libs\date_time\test\testlocal_time.test\vc-8_0\debug\threading-multi\testlocal_time.run ====== BEGIN OUTPUT ====== Pass :: Zone abbreviation Pass :: base offset Pass :: zone has dst Pass :: is_dst check Pass :: to_string: 2003-Dec-20 05:00:00 MST Checking copy construction Pass :: is_dst check Pass :: to_string: 2003-Dec-20 05:00:00 MST Pass :: zone has dst Pass :: base offset Checking special_value construction Pass :: is special_value Pass :: to_string: not-a-date-time Pass :: is_dst Pass :: is special_value Pass :: to_string: +infinity Pass :: is_dst Pass :: Add a duration to a special value Pass :: max_date_time to_string: 9999-Dec-31 18:59:59.999999999 EST EXIT STATUS: 3 ====== END OUTPUT ====== -- Dave Abrahams Boost Consulting www.boost-consulting.com

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[Boost-bugs] [ boost-Feature Requests-1456195 ] mkstemp
by SourceForge.net 22 Mar '06

22 Mar '06

Feature Requests item #1456195, was opened at 2006-03-22 07:27 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=357586&aid=1456195&group_… Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: None Group: None Status: Open Resolution: None Priority: 5 Submitted By: Nobody/Anonymous (nobody) Assigned to: Nobody/Anonymous (nobody) Summary: mkstemp Initial Comment: Could you add a function similar to mkstemp in boost::filesystem? It would be interesting if it could receive an boost::filesystem::path or an std::string as input and return a ofstream and a path or a string as output jesus.malo(a)bsc.es ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=357586&aid=1456195&group_… ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 _______________________________________________ Boost-bugs mailing list Boost-bugs(a)lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/boost-bugs

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