October 2007 - Boost - lists.preview.boost.org

[dynamic overload] proof of concept implementation - new version available
by Marco 20 Oct '07

20 Oct '07

I uploaded to boost vault a new version of my implementation of Boost.Overload: /overload-mrcec/overload-0.2.1.zip , link: http://tinyurl.com/37647m Boost Overload behaves as an overloaded Boost Function. Actually it wraps multiple Boost Function objects of different signatures. What's new: I only fixed some issue after testing the code on more compilers. This is the current status: compiler OS test ------------------------------------------- gcc 4.1.2 under Linux pass intel 9.1 under Linux pass mingw 3.4.2 under Windows pass mingw 3.2.3 under Windows fail MS VC++ 8.0 under Windows pass MS VC++ 7.1 under Windows fail I arranged this and previous version in boost vault in a specific folder: /overload-mrcec You find a description of each version in the file README_FIRST.TXT, link: http://tinyurl.com/32hv3p You can read a preliminary introduction to boost overload here: http://tinyurl.com/3xtbyl The documentation has been kindly written down by Dean Michael Berris. You can read an informal tutorial here: http://docs.google.com/Doc?id=dfxvjncs_1x6456m Please report any bug, compiler issue, comment and suggestion. They are really appreciated. Regards, Marco Cecchetti -- Using Opera's revolutionary e-mail client: http://www.opera.com/mail/

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[test] Another Boost.Test failure.
by John Maddock 20 Oct '07

20 Oct '07

There are more Boost.Test failures coming through caused by the recent changes - this time Intel-10 on Win64 is failing most of the math lib tests with: http://tinyurl.com/2quy5h John.

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[test] Changes break Borland support
by John Maddock 20 Oct '07

20 Oct '07

The recent changes to Boost.Test have broken Borland support, see for example: http://tinyurl.com/34wlps Starting to get frustrated yours, John :-(

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[intrusive] Looking for some advice on intrusive splay trees
by Ion Gaztañaga 20 Oct '07

20 Oct '07

Hi to all, Lately I've been trying to implement splay trees for Intrusive. Excerpt taken from en.wikipedia.org/wiki/Splay_tree: "A splay tree is a self-balancing binary search tree with the additional unusual property that recently accessed elements are quick to access again. It performs basic operations such as insertion, look-up and removal in O(log(n)) amortized time. For many non-uniform sequences of operations, splay trees perform better than other search trees, even when the specific pattern of the sequence is unknown. The splay tree was invented by Daniel Sleator and Robert Tarjan." As most of you know, splay trees splay (rebalance) the tree also on searches, so that the target node is placed as root, yielding to better search times for frequently searched nodes (cache effect). The implementation I've taken as model is taken from the article written by Ralf Mattethat for C++ Users Journal (September 2005) titled "Implementing Splay Trees in C++" (http://www.ddj.com/architect/184402007) Following usual STL-like implementations I've used left and right pointers of the header to point to the leftmost and rightmost node respectively. Several intrusive rbtree implementation tricks and optimizations can be easily reused for splay trees so I think we can have a useful intrusive splay tree. My main issue is related to constness and thread-safety. I would like to offer a STL-like interface (that is, the interface actually implemented for other Intrusive containers like set, multiset and rbtree), but take in care that the tree will rebalance in each find/lower_bound/upper_bound operation so those operations couldn't be const members unless we declare the header as mutable. I plan to add optional (runtime) rebalancing for each operation (for example, the user could call find() without rebalancing if he doesn't want to alter the cache effect, or just needs more predictable search times). iterator it = splay_tree.find(a);//Splay operation performed iterator it = splay_tree.find(a, dont_splay);//No splay Allowing const overloads (casting the constness away internally) with splaying (rebalancing): const_iterator it = const_splay_tree.find(a); //Splaying performed would break usual de-facto thread-safety guarantees for STL and Intrusive containers (read-only access from different threads is thread-safe). So the main question is: what approach do you think would be better? ¿Just splay in const operations and put a thread-safety warning? ¿Make const versions non-splaying? ¿Don't offer const versions of search functions? Regards, Ion

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Re: [boost] [callback abstraction]Determining interest for proposal
by Miguel Tadeu 20 Oct '07

20 Oct '07

Files are in source forge: http://sourceforge.net/projects/abstractcall/ - formating needs real polishing - want to make some changes...just don't know how, yet - comments are very wellcome, 'cos even if it's not accepted, I'll be using this in my projects

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[optional] documentation errors
by Edward Diener 19 Oct '07

19 Oct '07

In the 1.34.1 documentation for optional<T>, in the Synopsis section, it is currently written: -------------------------------------------------------------------------- template<class InPlaceFactory> explicit optional ( InPlaceFactory const& f ) ; template<class TypedInPlaceFactory> explicit optional ( TypedInPlaceFactory const& f ) ; AND template<class InPlaceFactory> optional& operator = ( InPlaceFactory const& f ) ; template<class TypedInPlaceFactory> optional& operator = ( TypedInPlaceFactory const& f ) ; -------------------------------------------------------------------------- Since InPlacefactory and TypedInPlacePlactory are actual classes, these should be: template<InPlaceFactory> explicit optional ( InPlaceFactory const& f ) ; template<TypedInPlaceFactory> explicit optional ( TypedInPlaceFactory const& f ) ; AND template<InPlaceFactory> optional& operator = ( InPlaceFactory const& f ) ; template<TypedInPlaceFactory> optional& operator = ( TypedInPlaceFactory const& f ) ; ------------------------------------------------------------------------- In the Detailed Semantics these are shown correctly.

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Trac open tasks - by assignee
by Marshall Clow 19 Oct '07

19 Oct '07

[ 24 open tasks today, 23 last week ] If you are maintaining a library, and have not logged into the trac system at <http://svn.boost.org/trac/boost/>, please do so ASAP. Until you do that, no tickets can be assigned to you, and will remain under "None". Instructions on working with tickets can be found at: <http://svn.boost.org/trac/boost/wiki/TicketWorkflow> and a mapping of user names to "real names" can be found at: <http://svn.boost.org/trac/boost/report/16> Tasks 11 <Blank> 7 djowel 6 grafik <Blank> 1249 root/regression content <Blank> 1250 root/people content <Blank> 1253 root/more/background.html content <Blank> 1254 root/more/bibliography.html content <Blank> 1255 root/more/boost_soc_2006_overview.html content <Blank> 1256 root/more/BoostCon* content <Blank> 1257 root/more/*.(jpg|gif|png|ico) <Blank> 1258 root/more/borland_cpp.html content <Blank> 1259 root/more/bugs.htm content <Blank> 1265 root/tools/regression/xsl_reports/runner/instructions.rst content <Blank> 1325 implement website testing djowel 1174 Simplified template arg handling djowel 1175 What is punctuation? djowel 1200 Revamp the header information djowel 1245 Make Spirit grammars pass a non-const reference to self djowel 1263 Add include path searching for import & include. djowel 1264 Add option to specify qbk file to use. djowel 1279 Make sure multiple #import of a file imports the file only once. grafik 1040 boost.devel archive at ActiveState disconnected grafik 1088 Docs for template escape feature. grafik 1248 root/status content grafik 1251 Implement RSS backend for Quickbook. grafik 93 Testing problems on AIX and OSF grafik 94 Better reporting of failed expectation. -- -- Marshall Marshall Clow Qualcomm, Inc. <mailto:mclow@qualcomm.com> The famous British scientist, Lord Kelvin, said: "When you measure what you are speaking about and express it in numbers, you know something about it, but when you cannot (or do not) measure it, when you cannot (or do not) express it in numbers, then your knowledge is of a meagre and unsatisfactory kind."

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Trac open support requests - by assignee
by Marshall Clow 19 Oct '07

19 Oct '07

[ 28 open requests today, 28 last week ] If you are maintaining a library, and have not logged into the trac system at <http://svn.boost.org/trac/boost/>, please do so ASAP. Until you do that, no tickets can be assigned to you, and will remain under "None". Instructions on working with tickets can be found at: <http://svn.boost.org/trac/boost/wiki/TicketWorkflow> and a mapping of user names to "real names" can be found at: <http://svn.boost.org/trac/boost/report/16> Support Requests 4 grafik 3 jbandela 2 vladimir_prus 2 turkanis 2 rogeeff 2 jsiek 2 djowel 2 az_sw_dude 1 urzuga 1 shammah 1 nobody 1 fcacciola 1 dgregor 1 dave 1 anthonyw 1 agurtovoy 1 None None 982 x64 documentation for windows agurtovoy 816 duplicat initial members -> erase_key postcond. fail anthonyw 1053 Error using boost::mutex and C++/CLI az_sw_dude 605 support new 2007 DST rules for timezone db az_sw_dude 614 new timezone db file for #1471723 - 2007 DST support dave 1262 [Boost.Iterators] Reasoning for boost::pointee<> not supporting back_insert_iterator? dgregor 346 Error: Template with C linkage djowel 1221 Section names may cause html names to be too long djowel 543 Embedded python won't compile fcacciola 282 boost::optional<enum> fails with /CLR grafik 481 Linker Problems with VC .NET 2003 / STLPort / Boost grafik 497 Unable to build boost with Dinkumware STL version 4.02 grafik 552 Building universal binary on MacOSX grafik 683 libraries won't build jbandela 259 Problem compiling :/ jbandela 279 SLOOOWW tokenizer compilation on VC++6.0 jbandela 306 Visual C++ "Language Extensions" support jsiek 580 Max Flow Algorithm jsiek 905 Assertion failed in token_iterator.hpp nobody 597 Non-basic-source-character-set characters conflict with MSVC rogeeff 747 failing on 6 targets in MacOS X rogeeff 847 [Test Library] How to init/free a singleton shammah 836 warning using pool.hpp turkanis 484 Boost.Iostreams and newline translation turkanis 579 boost.iostreams file_descriptor and sharing urzuga 426 lambda vs pure virtual functions vladimir_prus 1132 program_options documentation error. vladimir_prus 850 program_options strips off escaped quotes in some situations -- -- Marshall Marshall Clow Qualcomm, Inc. <mailto:mclow@qualcomm.com> The famous British scientist, Lord Kelvin, said: "When you measure what you are speaking about and express it in numbers, you know something about it, but when you cannot (or do not) measure it, when you cannot (or do not) express it in numbers, then your knowledge is of a meagre and unsatisfactory kind."

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Trac open feature requests - by assignee
by Marshall Clow 19 Oct '07

19 Oct '07

[ 84 open feature requests today, 82 last week ] If you are maintaining a library, and have not logged into the trac system at <http://svn.boost.org/trac/boost/>, please do so ASAP. Until you do that, no tickets can be assigned to you, and will remain under "None". Instructions on working with tickets can be found at: <http://svn.boost.org/trac/boost/wiki/TicketWorkflow> and a mapping of user names to "real names" can be found at: <http://svn.boost.org/trac/boost/report/16> Feature Requests 15 djowel 9 pdimov 8 johnmaddock 5 jsiek 5 None 4 mark_rodgers 4 grafik 4 doug_gregor 4 dave 4 az_sw_dude 3 dlwalker 2 vladimir_prus 2 nasonov 2 ebf 1 witt 1 rogeeff 1 ramey 1 mumiee 1 jmaurer 1 guwi17 1 garcia 1 eric_niebler 1 bemandawes 1 asutton 1 anthonyw 1 agurtovoy 1 <Blank> <Blank> 1093 Mandatory source files shouldn't require_ or give the impression to require_ the Boost Build system None 1059 random_on_sphere can be made 10 times faster! None 1166 [boostbook] paths relative to boost.root None 1219 Add official Visual C++ 2008 (9.0) support None 1298 fun with imdb graph None 1329 default value agurtovoy 799 mpl::if_ anthonyw 659 provide an abstract "Task" type based on Boost.Threads asutton 693 Add clique detection algorithms DFMax_ Bron-Kerbosch az_sw_dude 1207 Method "from_julian_day_number" (class gregorian_calendar) not documented az_sw_dude 17 Socket wrapper class az_sw_dude 187 locale az_sw_dude 596 make timezone csv file C/C++ compatible bemandawes 590 mkstemp dave 1180 [boost.python] def_readwrite need a default docstring dave 1315 iterator_adaptor does not work with incomplete Value types dave 916 BPL Support for Python Callable Objects dave 918 __doc__ strings djowel 1156 feature request: linkid to the whole document djowel 1157 On Images djowel 1158 optional named parameters djowel 1159 bibliography support djowel 1173 Balanced comments djowel 1189 Scoped Macros djowel 1190 Markups inside simple markups djowel 1193 Nestable tables and lists and exlicit paragraph markup djowel 1194 Add ID to table to allow linking to tables easily djowel 1202 Add a [teletype] source mode djowel 1204 Non-breaking-space? djowel 1205 Quickbook getting started djowel 1213 Specify that [#named_anchors] are global djowel 1214 Provide an error count from a bjam Quickbook build djowel 1288 Quickbook article info needs expansion to include more bibliographic info dlwalker 1224 MPL compatibilty for Integer Type Selection Templates dlwalker 1225 Exact-sized Integer Type Selection Templates dlwalker 1227 Original/Signed/Unsigned Integer Variant Selection Templates doug_gregor 372 adjacency_matrix should model BidirectionalGraph doug_gregor 373 LEDA graph adaptors for undirected graphs doug_gregor 395 BGL graph types do not support allocators doug_gregor 746 max flow with lower bounds (capacities) ebf 1112 reference_wrapper<T> should convert to reference_wrapper<U> when T& is convertible to U& ebf 547 [variant] Compile time checked getter eric_niebler 1071 Request for BOOST_REVERSE_FOREACH and rationale garcia 1045 [multi_array] Need a proper swap operation grafik 1203 Decouple the backend grafik 1236 email addresses of bug submitters should be obfuscated on publicly visible Trac pages grafik 1303 Per-target resource limits. grafik 714 [jam] HardLink rule on NT platform guwi17 795 [ublas] vector::back() jmaurer 920 Proposed extension to random library johnmaddock 1102 Add BOOST_NO_IOSTREAM johnmaddock 1103 Add BOOST_NO_IOSFWD johnmaddock 1104 Add BOOST_NO_TYPEID johnmaddock 1105 Add BOOST_NO_STD_TYPEINFO or inject ::type_info into std johnmaddock 1178 Regular expression min match length johnmaddock 1331 Boost.TypeTraits namespace johnmaddock 591 make portable stdint.h from boost code johnmaddock 764 [regex] add support for a BOOST_NO_CREGEX mode jsiek 100 more use of the concept "allocator" jsiek 182 Support aspect-orientation jsiek 193 Check ordering for mutexes jsiek 315 Implement operator[] for Tokenizer jsiek 694 Add Maximum Common Subgraph (MCS) algorithm mark_rodgers 30 parser mark_rodgers 558 add database library? mark_rodgers 821 allow_unregistered improvement mark_rodgers 87 function to get the size of a array mumiee 1201 Regexify the syntax highlighter nasonov 913 Specialization of lexical_cast nasonov 922 Lexical cast and wide characters pdimov 1107 Add weak_use_count to weak_ptr as a debugging aid pdimov 1109 intrusive_ptr needs a helper base class pdimov 1110 Add a release method to scoped_array pdimov 1111 boost::bind objects should expose function_type and list_type pdimov 1113 shared_array<T> should convert to shared_array<T const> pdimov 1114 Request for shared_ptr::type and shared_ptr::pointer pdimov 398 Support for embedded VC++ 4.0 pdimov 445 Can't delete automatically in circularly included object. pdimov 810 support for weak_ptr binding ramey 874 Ability to partially specialize implementation_level rogeeff 1136 Let BOOST_CHECK_EQUAL support std::wstring vladimir_prus 1129 Standalone doc_ outdated path from homepage vladimir_prus 674 find-library for boost decorated names witt 145 filter iterator adaptor should be able to be bidirectional -- -- Marshall Marshall Clow Qualcomm, Inc. <mailto:mclow@qualcomm.com> The famous British scientist, Lord Kelvin, said: "When you measure what you are speaking about and express it in numbers, you know something about it, but when you cannot (or do not) measure it, when you cannot (or do not) express it in numbers, then your knowledge is of a meagre and unsatisfactory kind."

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Trac submitted patches - by assignee
by Marshall Clow 19 Oct '07

19 Oct '07

[ 48 submitted patches today, 49 last week ] If you are maintaining a library, and have not logged into the trac system at <http://svn.boost.org/trac/boost/>, please do so ASAP. Until you do that, no tickets can be assigned to you, and will remain under "None". Instructions on working with tickets can be found at: <http://svn.boost.org/trac/boost/wiki/TicketWorkflow> and a mapping of user names to "real names" can be found at: <http://svn.boost.org/trac/boost/report/16> Patches 6 dave 5 rogeeff 4 nesotto 4 grafik 4 agurtovoy 4 None 3 turkanis 3 doug_gregor 2 djowel 2 az_sw_dude 2 anthonyw 1 urzuga 1 shammah 1 samuel_krempp 1 nasonov 1 jsiek 1 johnmaddock 1 dlwalker 1 danielw 1 bemandawes None 1116 disable some warnings in msvc build None 1182 Specifying character-set by the guideline and the inspect program None 1296 std::advance and std::distance for Boost.Iterator traversal categories None 1297 std advance and std distance for Boost.Iterator traversal categories agurtovoy 1049 Getting mpl/has_xxx.hpp to compile on AIX agurtovoy 637 Adjusts mpl::pair concept to be compatible with STL pairs agurtovoy 761 [mpl] evc4 port agurtovoy 861 Detect nested template members with has_template_xxx anthonyw 802 [thread] MSVS: Allow use of thread headers with /Za anthonyw 868 [thread] thread_specific_ptr::element_type ? az_sw_dude 1261 Boost.DateTime patch to support STLport's _STLP_NO_IOSTREAMS mode az_sw_dude 827 Unused variable in format date parser bemandawes 1090 scoped_file class that deletes file at end of scope danielw 863 [parameter] fix operator|| for lazy binding dave 1020 Boost.Iterator proposal to add is_constant_iterator dave 1066 Patch to make Boost.Python compile on SunCC dave 1271 unused parameter warning in release build dave 1316 Support for generic function(*args_ **kwds) call operator. dave 857 add shared_ptr< const T> support dave 903 inconsistent usage of function pointer typedefs djowel 1208 gcc initialization order warnings djowel 1313 Support multiple copyright lines in quickbook dlwalker 653 [integer] add support for integers longer than long doug_gregor 1087 Mismatch between BBv2 and bjam toolsets in configure script. doug_gregor 862 [utility] Make result_of handle lambda expressions doug_gregor 870 boost::graph::graph_utility.hpp is_connected() bad call grafik 1031 AmigaOS fixes for bjam grafik 1074 FreeBSD specific patches to boost 1.34.0 grafik 1287 Intel Compiler Patch for BJam's build.jam grafik 989 Boost build does not support building universal binaries on macintosh johnmaddock 633 [config] evc4 port jsiek 541 [concept_check.hpp] remove unused variable warning in msvc nasonov 839 lexical_cast - local variable shadow patch nesotto 1027 [ptr_container] optional serialization support nesotto 1151 [range] make_indirect_range() nesotto 1302 range test as_literal patch nesotto 1309 vc7.1 array workaround rogeeff 1169 errors in tutorial for test framework "new_year_resolution" rogeeff 645 [test] no eh exception handling functions on evc4 rogeeff 762 [test] evc4 issue with SEH support rogeeff 998 prg_exec_fail2 fail on ppc rogeeff 999 prg_exec_fail3 fails on release variant samuel_krempp 980 boost.format vc8/win32 compilation warning shammah 840 pool allocator - local variable shadow patch turkanis 586 iostreams // file_descriptor::seek BUG on files > 4 GB turkanis 869 [iostreams] patch for building by BBv2 turkanis 884 [iostreams] workaround for the boost + stdcxx on MSVC 7.1 urzuga 864 [lambda][utility] Make lambda support result<> -- -- Marshall Marshall Clow Qualcomm, Inc. <mailto:mclow@qualcomm.com> The famous British scientist, Lord Kelvin, said: "When you measure what you are speaking about and express it in numbers, you know something about it, but when you cannot (or do not) measure it, when you cannot (or do not) express it in numbers, then your knowledge is of a meagre and unsatisfactory kind."

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