August 2005 - Boost - lists.preview.boost.org

Re: [boost] Interest in an ODBC library?
by Brian Braatz 02 Aug '05

02 Aug '05

Joaquin, sorry for the few days response here- I had a "surprise" business trip I had to take which kept me out of town and away from mail for a few days Thoughts below (note- I have left a good chunk of the original mail intact for context) > -----Original Message----- > On Behalf Of Joaquin M Lopez Munoz > > Brian Braatz <brianb <at> rmtg.com> writes: > > If you would please elaborate. (some of us are "slower" than others :) > > ). > > > > is the problem getting to the index objects themselves via > > inherit_linearly? > > > > if you have dynamic data, then I am thinking you also have dynamically > > applied indices? > > > > Maybe I can elaborate- > > > > consider the following pseudo code: > > > > connection con = db.connect("myserver,root,password,mydatabase"); > > > > dynamic_table dt; > > > > // the select "*" means bring me back all the fields from that table > > // even though I don't know what the fields ARE yet > > dt = query("select * from person"); > > > > // ok so now dt has an UNKNOWN number of columns > > > > dt.add_index( index("first_name")); > > > > // or something along those lines. > > > > in this case, the index is applied dynamically. > > > > so how does that connect with the things you said ? > > > [Joaquin M Lopez Munoz Writes:] > Let me formulate the problem in the terminology > of Boost.MultiIndex --hopefully, the implications > for a DB framework scenario will be clear after this. > > Consider the following perfectly normal code dealing > with a static multi_index_container: > > typedef multi_index_container< > element, > indexed_by< > ordered_unique<identity<element> >, > sequenced<> > > > > static_mic_t; > > template<typename Index> > void reverse_dump(const Index& i) > { > std::copy( > i.rbegin(),i.rend(), > std::ostream_iterator<typename Index::value_type>(std::cout)); > } > > int main() > { > static_mic_t s_mic; > ... > reverse_dump(s_mic.get<0>()); > reverse_dump(s_mic.get<1>()); > } > > What would the equivalent be for the dynamic case? > > typedef dynamic_multi_index_container< > element > > dynamic_mic_t; // no indices specified at compile time > > int main() > { > dynamic_mic_t d_mic; > > // add indices at run time > d_mic.add_index<ordered_unique<identity<element> > >(); > d_mic.add_index<sequenced<> >(); > ... > > reverse_dump(d_mic.get(0)); // note index number is no longer > reverse_dump(d_mic.get(1)); // a template parameter > } > > Now, how are we supposed to define reverse_dump? Clearly > it cannot be the same template as in the static case, > since the types of the indices are only known at > run time. [Brian Braatz Writes:] ideas- have the container accept a list of possible index types then use inherit_linearly<> to make those types- (only as pointers) then when the index gets runtime added- you store it in the generated objects Additionally- one could also force the user to make a struct to use as a tag to reference the index (instead of the number) using this "type tag", you can lookup the runtime object(s) which were dynamically added. What I am suggesting is a similar design to what I recently got working on something else (almost ready for sharing with the world). I have yet another plan trip tomorrow (ALL DAY tomorrow). I will code a small sample of what I am suggesting. (code is easier to talk about than concepts sometimes :) ) Joaquín M López Muñoz writes: > If I wasn't clear enough please tell me so and > I'll try to elaborate. I'll be more than happy to > discuss and refine these ideas. IMHO the concepts > around a potential multi_index_container sketched > here can serve as the basis for a DB run-time data > structure, much like for instance IndexedDBView in the > DTL does. > > Best, > > Joaquín M López Muñoz > Telefónica, Investigación y Desarrollo I am not as familiar with multi-index, but I am going to re-re-rereview that lib tomorrow along with the mail you wrote. Pleasure "talking" with you :) Brian

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Still Can't Build Docs
by David A. Greene 02 Aug '05

02 Aug '05

I'd like to put the NTP library up on the sandbox but I need to be able to build documentation first. I updated to the latest CVS, build bjam and here's what I get: >>-waller-> which bjam /home/greened/bin/bjam >>-waller-> pwd /home/greened/src/boost/doc >>-waller-> bjam --v2 warning: Python location is not configured warning: the Boost.Python library won't be built Building Boost.Regex with the optional Unicode/ICU support disabled. Please refer to the Boost.Regex documentation for more information (and if you don't know what ICU is then you probably don't need it). /home/greened/src/boost/tools/build/v2/tools/boostbook.jam:319: in object(boostbook-generator)(a)1.run warning: rulename $(base-target).depends expands to empty string /home/greened/src/boost/tools/build/v2/build/generators.jam:826: in try-one-generator-really /home/greened/src/boost/tools/build/v2/build/generators.jam:873: in try-one-generator /home/greened/src/boost/tools/build/v2/build/generators.jam:1080: in construct-really /home/greened/src/boost/tools/build/v2/build/generators.jam:1139: in generators.construct /home/greened/src/boost/tools/build/v2/build/targets.jam:1242: in construct /home/greened/src/boost/tools/build/v2/build/targets.jam:1128: in object(typed-target)(a)22.generate /home/greened/src/boost/tools/build/v2/build/targets.jam:757: in generate-really /home/greened/src/boost/tools/build/v2/build/targets.jam:730: in object(main-target)(a)1.generate /home/greened/src/boost/tools/build/v2/build/targets.jam:252: in object(project-target)(a)17.generate /home/greened/src/boost/tools/build/v2/build-system.jam:276: in load /home/greened/src/boost/tools/build/v2/kernel/modules.jam:259: in import /home/greened/src/boost/tools/build/v2/kernel/bootstrap.jam:153: in boost-build /home/greened/src/boost/boost-build.jam:12: in module scope /home/greened/src/boost/tools/build/v2/tools/boostbook.jam:324: in object(boostbook-generator)(a)1.run warning: rulename $(target[2]).set-path expands to empty string /home/greened/src/boost/tools/build/v2/build/generators.jam:826: in try-one-generator-really /home/greened/src/boost/tools/build/v2/build/generators.jam:873: in try-one-generator /home/greened/src/boost/tools/build/v2/build/generators.jam:1080: in construct-really /home/greened/src/boost/tools/build/v2/build/generators.jam:1139: in generators.construct /home/greened/src/boost/tools/build/v2/build/targets.jam:1242: in construct /home/greened/src/boost/tools/build/v2/build/targets.jam:1128: in object(typed-target)(a)22.generate /home/greened/src/boost/tools/build/v2/build/targets.jam:757: in generate-really /home/greened/src/boost/tools/build/v2/build/targets.jam:730: in object(main-target)(a)1.generate /home/greened/src/boost/tools/build/v2/build/targets.jam:252: in object(project-target)(a)17.generate /home/greened/src/boost/tools/build/v2/build-system.jam:276: in load /home/greened/src/boost/tools/build/v2/kernel/modules.jam:259: in import /home/greened/src/boost/tools/build/v2/kernel/bootstrap.jam:153: in boost-build /home/greened/src/boost/boost-build.jam:12: in module scope /home/greened/src/boost/tools/build/v2/tools/boostbook.jam:325: in object(boostbook-generator)(a)1.run warning: rulename $(target[2]).depends expands to empty string /home/greened/src/boost/tools/build/v2/build/generators.jam:826: in try-one-generator-really /home/greened/src/boost/tools/build/v2/build/generators.jam:873: in try-one-generator /home/greened/src/boost/tools/build/v2/build/generators.jam:1080: in construct-really /home/greened/src/boost/tools/build/v2/build/generators.jam:1139: in generators.construct /home/greened/src/boost/tools/build/v2/build/targets.jam:1242: in construct /home/greened/src/boost/tools/build/v2/build/targets.jam:1128: in object(typed-target)(a)22.generate /home/greened/src/boost/tools/build/v2/build/targets.jam:757: in generate-really /home/greened/src/boost/tools/build/v2/build/targets.jam:730: in object(main-target)(a)1.generate /home/greened/src/boost/tools/build/v2/build/targets.jam:252: in object(project-target)(a)17.generate /home/greened/src/boost/tools/build/v2/build-system.jam:276: in load /home/greened/src/boost/tools/build/v2/kernel/modules.jam:259: in import /home/greened/src/boost/tools/build/v2/kernel/bootstrap.jam:153: in boost-build /home/greened/src/boost/boost-build.jam:12: in module scope /home/greened/src/boost/tools/build/v2/build/targets.jam:1245: in construct from module object(typed-target)@22 error: unable to construct ./doc /home/greened/src/boost/tools/build/v2/build/targets.jam:1128: in object(typed-target)(a)22.generatefrom module object(typed-target)@22 /home/greened/src/boost/tools/build/v2/build/targets.jam:757: in generate-really from module object(main-target)@1 /home/greened/src/boost/tools/build/v2/build/targets.jam:730: in object(main-target)(a)1.generate from module object(main-target)@1 /home/greened/src/boost/tools/build/v2/build/targets.jam:252: in object(project-target)(a)17.generate from module object(project-target)@17 /home/greened/src/boost/tools/build/v2/build-system.jam:276: in load from module build-system /home/greened/src/boost/tools/build/v2/kernel/modules.jam:259: in import from module modules /home/greened/src/boost/tools/build/v2/kernel/bootstrap.jam:153: in boost-build from module /home/greened/src/boost/boost-build.jam:12: in module scope from module I edited tools/build/v2/user-config.jam to use the gcc toolset. Any ideas? -Dave

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[1.33.0] Partial thaw on branch for fixing the remaining failures
by Doug Gregor 02 Aug '05

02 Aug '05

The RC_1_33_0 branch is partially thawed so that we can fix the remaining failures for release. I've started the regression notifications again, this time on the release branch: when no more failures show up, we release. Library authors: for any failures that you will not fix, mark them as expected failures on the branch. If you believe there is a configuration problem on one of the test machines, write to the list to say what you think is going on and we'll try to get it fixed. The list of issues we need to fix before we can release is here: http://engineering.meta-comm.com/boost-regression/CVS-RC_1_33_0/ developer/issues.html Doug

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[1.33.0] 300+ Broken links
by Jonathan Turkanis 01 Aug '05

01 Aug '05

Hi, I ran a shareware HTML link checker on release candidate 1, and found 334 broken links; I'm attaching the report. A few of them appear bogus ("Error: invalid syntax"), and some appear to reflect the temporary unavailability of news.gmane.org, but most appear legitimate. I'll volunteer to fix as many of them as I can, if it's not too late to make it into the relapse. Some I can't fix, because I don't know where they're supposed to point. Here are the affected areas of Boost: Libraries: - compatibility - conversion - crc - date_time - disjoint_sets - filesystem - format - function - graph - hash - iterator - math - minmax - multi_index - numeric/conversion - numeric/interval - numeric/ublas - parameter - preprocessor - property_map - ptr_container - python - random - range - rational - regex - serialization - smart_ptr - spirit - test - threads - timer - tuple - type_traits - utility - variant - wave Tools: - build (v1 + v2) - boostbook Misc: - index.htm - doc/html/index.html - doc/html/who_s_using_boost_.html - doc/html/who_s_using_boost_/open.html - more/discussion_policy.htm - more/mailing_lists.htm - more/test_policy.htm - more/background.html - more/bibliography.html - more/cpp_committee_meetings.html - more/error_handling.html - more/formal_review_schedule.html - more/generic_exception_safety.html - more/generic_programming.html - more/getting_started.html - more/regression.html - more/version_history.html - more/writingdoc/template/definitions.html - people/darin_adler.htm - people/dietmar_kuehl.htm - people/jonathan_turkanis.htm - people/mark_rodgers.htm - people/people.htm - people/ralf_w_grosse_kunstleve.htm - people/vesa_karvonen.htm Jonathan

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[Boost-bugs] [ boost-Patches-1249809 ] Minor spell errors on lambda_functor_base.hpp header
by SourceForge.net 01 Aug '05

01 Aug '05

Patches item #1249809, was opened at 2005-08-01 16:57 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=307586&aid=1249809&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: Duilio J. Protti (dprotti) Assigned to: Nobody/Anonymous (nobody) Summary: Minor spell errors on lambda_functor_base.hpp header Initial Comment: Attached is the patch with the corresponding corrections. The patch is not just for /boost/lambda/detail/lambda_functor_base.hpp file, but also for lambda_fwd.hpp. Bye, Duilio Protti. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=307586&aid=1249809&group_… ------------------------------------------------------- SF.Net email is sponsored by: Discover Easy Linux Migration Strategies from IBM. Find simple to follow Roadmaps, straightforward articles, informative Webcasts and more! Get everything you need to get up to speed, fast. http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click _______________________________________________ Boost-bugs mailing list Boost-bugs(a)lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/boost-bugs

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[Boost-bugs] [ boost-Patches-1160158 ] Perl style foreach iterating
by SourceForge.net 01 Aug '05

01 Aug '05

Patches item #1160158, was opened at 2005-03-09 17:05 Message generated for change (Comment added) made by dprotti You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=307586&aid=1160158&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: Amir Taaki (genjix) Assigned to: Nobody/Anonymous (nobody) Summary: Perl style foreach iterating Initial Comment: somewhere in boost, there should be a perl style foreach iterator, like so #define ITERATOR(obj) typeof(obj.begin()) #define foreach(v,i) for(ITERATOR(v) i = v.begin() ; i != v.end() ; i++) genjix at gmail.com ---------------------------------------------------------------------- Comment By: Duilio J. Protti (dprotti) Date: 2005-08-01 16:52 Message: Logged In: YES user_id=1012656 There is something like that. In fact, there is something much better, take a look at this article: http://www.informit.com/articles/article.asp?p=400651 About your submission, it's not a patch, is more like a feature request, so this is not the correct place to post it. Regards, Duilio Protti. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=307586&aid=1160158&group_… ------------------------------------------------------- SF.Net email is sponsored by: Discover Easy Linux Migration Strategies from IBM. Find simple to follow Roadmaps, straightforward articles, informative Webcasts and more! Get everything you need to get up to speed, fast. http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click _______________________________________________ Boost-bugs mailing list Boost-bugs(a)lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/boost-bugs

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VC8?
by Daryle Walker 01 Aug '05

01 Aug '05

I don't use Visual C++, but people here talk like VC8 is still in beta. So why are we treating it like a supported compiler? Shouldn't we wait for VC8 to be finalized? (That means telling users to wait until 1.34 or stay with VC7.1.) Aren't there several VC8 betas being used by people here? -- Daryle Walker Mac, Internet, and Video Game Junkie darylew AT hotmail DOT com

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Boost regression notification (2005-08-01)
by Douglas Gregor 01 Aug '05

01 Aug '05

Boost regression test failures ------------------------------ Report time: 2005-08-01T15:32:34Z This report lists all regression test failures on release platforms. Detailed report: http://engineering.meta-comm.com/boost-regression/CVS-RC_1_33_0/developer/i… 1 failure in 1 library: thread (1) |thread| test_thread_lib: vc-6_5-stlport

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Diff between variant and any?
by Neal Becker 01 Aug '05

01 Aug '05

In a nutshell, what is the difference between boost::variant and boost::any?

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[1.33.0] Important: vc-6_5-stlport failure in Threads test
by Doug Gregor 01 Aug '05

01 Aug '05

Michael, This test is failing intermittently. Do you have any idea what could be going wrong? http://tinyurl.com/d2q9g Doug

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