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[intrusive] list_algorithms::swap_nodes
by Steven Watanabe 19 Mar '07

19 Mar '07

AMDG Surprisingly, this implementation of swap nodes for a doubly linked list works regardless of aliasing. private: static void swap_prev(node_ptr this_node, node_ptr other_node) { node_ptr temp(NodeTraits::get_previous(this_node)); NodeTraits::set_previous(this_node, NodeTraits::get_previous(other_node)); NodeTraits::set_previous(other_node, temp); } static void swap_next(node_ptr this_node, node_ptr other_node) { node_ptr temp(NodeTraits::get_next(this_node)); NodeTraits::set_next(this_node, NodeTraits::get_next(other_node)); NodeTraits::set_next(other_node, temp); } public: static void swap_nodes(node_ptr this_node, node_ptr other_node) { node_ptr next_this(NodeTraits::get_next(this_node)); node_ptr prev_this(NodeTraits::get_previous(this_node)); node_ptr next_other(NodeTraits::get_next(other_node)); node_ptr prev_other(NodeTraits::get_previous(other_node)); //these first two swaps must happen before the other two swap_prev(next_this, next_other); swap_next(prev_this, prev_other); swap_next(this_node, other_node); swap_prev(this_node, other_node); } In Christ, Steven Watanabe

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Re: [boost] [serialization] Support for multiple class name strings
by brangdon＠cix.compulink.co.uk 19 Mar '07

19 Mar '07

In-Reply-To: <etctga$nvo$1(a)sea.gmane.org> ramey(a)rrsd.com (Robert Ramey) wrote (abridged): > > I did something stupid with my serialization code. I blithely changed > > the names of several polymorphic classes everywhere they appeared in > > the code, since they had moved out of a class into that class's > > namespace (e.g. SomeNS::View::Primitive became SomeNS::Primitive). > > Several months later, I discovered that I could no longer read old > > binary archives, because I was using Boost.Serialization's > > BOOST_CLASS_EXPORT() macro, and this macro was now registering the > > Primtive type with the name-string "Primitive", instead of > > "View::Primitive", which is how it was saved in the oldest archives. > > would it be technically possible to add a > > BOOST_CLASS_EXPORT_ALIAS() macro, or some such? If it is possible, > > I'm willing to supply the implementation. > > I might be possible by hacking your own copy of extended_type_info.hpp. > I don't think we'd want to include such thing in the library. Why not? I don't currently use boost serialisation so feel free to ignore me. I do use another library that uses class names for IDs, and I think some kind of aliasing or remapping facility is inevitably needed. In other words, if you support BOOST_CLASS_EXPORT() then you should also support BOOST_CLASS_EXPORT_ALIAS(). (I also think that using class names is a fairly good and natural way to get IDs.) > So I would suggest: > > a) make the hack > b) make small program which loads your old archives and creates new > ones. > This should be very easy. > c) Forget this ever happened. If by this you mean they should convert all the user data in one huge conversion binge, then that's not always practical. Sometimes the conversion has to be done inline, with the old archive format supported forever by all future version of the program. -- Dave Harris, Nottingham, UK.

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[floating point utilities] Review request
by Johan Råde 19 Mar '07

19 Mar '07

This is a request for a formal review of the Floating Point Utilities library. The library contains the following: 1. Floating point number classfication functions: fpclassify, isfinite, isinf, isnan, isnormal (Follows TR1) 2. Sign bit functions: signbit, copysign, changesign (Follows TR1) 3. Facets that format and parse infinity and NaN according to the C99 standard. (These can be used for portable handling of infinity and NaN in text streams.) The library is available in the vault in the folder Math-Numerics. --Johan Råde

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[pending] fibonacci_heap -- not working
by Florian Teichert 19 Mar '07

19 Mar '07

Hi, is there anybody out there using the fibonacci_heap.hpp? I have a working implementation of dijkstra's shortest path algorithm and was trying to use fibonacci_heap from boost/pending to optimize its performance. To me it seems that it is not working properly. A key feature of this structure is that it should be possible to mix 'pop' and 'update' calls -- but, unfortunatly, after the first call to pop I get arbitrary indices from the heap. Some are even popped more than once. I am using the most recent CVS version. Can anyone help me here? Thanks in advance Florian

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Boost Conference Reminder
by David Abrahams 19 Mar '07

19 Mar '07

Just a quick note to remind you that the official website for BoostCon'07 is up and registration is open: http://www.boostcon.com Space is limited, so register early to be sure you'll get in. I'm really thrilled at the quality of the program (http://www.boostcon.com/program) we've assembled. On most days I'm going to have a hard time choosing among the simultaneous sessions! I look forward spending a week with you, immersed in Boost, at one of the most beautiful meeting sites in the world (http://www.boostcon.com/location/site) See http://www.boostcon.com/registration for registration information. -- Dave Abrahams Boost Consulting www.boost-consulting.com

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Boost inspection notification (2007-03-19/RC_1_34_0) *LC*
by Rene Rivera 19 Mar '07

19 Mar '07

Boost Inspection Report Run Date: 16:09:36 UTC, Monday 19 March 2007 An inspection program <http://www.boost.org/tools/inspect/index.html> checks each file in the current Boost CVS for various problems, generating this as output. Problems detected include tabs in files, missing copyrights, broken URL's, and similar misdemeanors. Totals: 11447 files scanned 908 directories scanned (including root) 1053 problems reported Problem counts: 654 files missing Boost license info or having wrong reference text 399 files missing copyright notice Summary: any (1) archive (1) build (68) concept_check (22) conversion (5) doc (1) filesystem (2) function (1) graph (1) inspect (1) integer (9) lambda (10) libs (6) logic (2) math (1) more (13) mpl (419) multi_array (13) numeric (188) optional (1) people (4) program_options (35) property_map (15) ptr_container (8) python (6) rational (5) regex (4) regression (118) release (2) serialization (16) signals (2) smart_ptr (8) test (3) timer (1) tr1 (2) tuple (5) utility (12) variant (42) Details: *L* missing Boost license info, or wrong reference text *C* missing copyright notice |any| libs/any/doc/ any.xml: *L* |archive| boost/archive/detail/ utf8_codecvt_facet.hpp: *L* |build| tools/build/v2/build/ build-request.jam: *L* modifiers.jam: *L* tools/build/v2/doc/ Jamfile.v2: *C* *L* 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Boost inspection notification (2007-03-19/RC_1_34_0) *X*
by Rene Rivera 19 Mar '07

19 Mar '07

Boost Inspection Report Run Date: 16:09:29 UTC, Monday 19 March 2007 An inspection program <http://www.boost.org/tools/inspect/index.html> checks each file in the current Boost CVS for various problems, generating this as output. Problems detected include tabs in files, missing copyrights, broken URL's, and similar misdemeanors. Totals: 11447 files scanned 908 directories scanned (including root) 196 problems reported Problem counts: 1 files with invalid line endings 0 bookmarks with invalid characters 3 invalid urls 104 broken links 21 unlinked files 22 file/directory names issues 1 files with tabs 9 violations of the Boost min/max guidelines 35 usages of unnamed namespaces in headers (including .ipp files) Summary: archive (3) bind (1) boost-root (3) build (2) date_time (1) doc (2) filesystem (37) graph (2) iostreams (3) lambda (3) math (8) more (1) mpl (1) multi_array (2) ptr_container (1) python (10) regex (1) regression (32) serialization (1) test (81) type_traits (1) Details: *R* invalid (cr only) line-ending *A* invalid bookmarks, invalid urls, broken links, unlinked files *N* file/directory names issues *T* tabs in file *M* uses of min or max that have not been protected from the min/max macros, or unallowed #undef-s *U* unnamed namespace in header |archive| boost/archive/basic_streambuf_locale_saver.hpp: *N* name exceeds 31 characters boost/archive/impl/xml_wiarchive_impl.ipp: *U* unnamed namespace at line 53 boost/archive/iterators/remove_whitespace.hpp: *U* unnamed namespace at line 57 |bind| boost/bind/placeholders.hpp: *U* unnamed namespace at line 25 |boost-root| index.htm: *A* broken link: doc/hmtl/date_time.html *A* broken link: doc/hmtl/date_time/details.html#changes *A* broken link: more/BoostCon07.html |build| tools/build/v2/test/test_system.html: *A* unlinked file tools/build/v2/tools/python.jam: *R* |date_time| libs/date_time/xmldoc/date_time_docs_howto.html: *A* unlinked file |doc| doc/html/boost_math/inverse_complex.html: *A* unlinked file doc/html/jam.html: *A* unlinked file |filesystem| libs/filesystem/doc/do-list.htm: *A* invalid URL (hardwired file): file://?/ *A* invalid URL (hardwired file): file://?/UNC/ libs/filesystem/doc/i18n.html: *A* broken link: convenience.htm#basic_recursive_directory_iterator *A* broken link: exception.htm *A* broken link: operations.htm *A* broken link: operations.htm#Do-the-right-thing *A* broken link: operations.htm#is_directory *A* broken link: operations.htm#is_file *A* broken link: operations.htm#status libs/filesystem/doc/index.htm: *A* broken link: ../build/Jamfile *A* broken link: convenience.htm *A* broken link: fstream.htm *A* broken link: operations.htm#create_directory *A* broken link: operations.htm#create_hard_link *A* broken link: operations.htm#current_path *A* broken link: operations.htm#directory_iterator *A* broken link: operations.htm#equivalent *A* broken link: operations.htm#file_size *A* broken link: operations.htm#initial_path *A* broken link: operations.htm#is_file *A* broken link: operations.htm#is_symlink *A* broken link: operations.htm#status *A* broken link: operations.htm#symlink_status *A* broken link: path.htm#Canonical *A* broken link: path.htm#Grammar *A* broken link: path.htm#Normalized *A* broken link: path.htm#default_name_check *A* broken link: path.htm#name_check_mechanism *A* broken link: path.htm#normalize *A* broken link: path.htm#operator_eq *A* broken link: path.htm#synopsis libs/filesystem/doc/portability_guide.htm: *A* broken link: path.htm#name_check_typedef libs/filesystem/doc/tr2_proposal.html: *A* invalid URL (hardwired file): file:///C|/boost/site/libs/filesystem/doc/operations.htm#complete_note |graph| libs/graph/example/file_dependencies.cpp: *M* violation of Boost min/max guidelines on line 139 libs/graph/test/serialize.cpp: *T* |iostreams| libs/iostreams/doc/acknowledgments.html: *A* unlinked file libs/iostreams/doc/concepts/multi-character.html: *A* unlinked file libs/iostreams/doc/installation.html: *A* broken link: ../../../tools/build/v1/build_system.htm |lambda| boost/lambda/core.hpp: *U* unnamed namespace at line 62 boost/lambda/detail/lambda_functors.hpp: *U* unnamed namespace at line 25 boost/lambda/exceptions.hpp: *U* unnamed namespace at line 24 |math| libs/math/test/common_factor_test.cpp: *M* violation of Boost min/max guidelines on line 146 *M* violation of Boost min/max guidelines on line 147 *M* violation of Boost min/max guidelines on line 193 *M* violation of Boost min/max guidelines on line 194 |more| more/separate_compilation.html: *A* broken link: ../libs/config/test/link/test/Jamfile.v2 |mpl| boost/mpl/alias.hpp: *U* unnamed namespace at line 17 |multi_array| boost/multi_array/base.hpp: *U* unnamed namespace at line 69 libs/multi_array/test/generative_tests.hpp: *U* unnamed namespace at line 57 |ptr_container| libs/ptr_container/doc/tutorial_example.html: *A* unlinked file |python| libs/python/doc/building.html: *A* broken link: ../../../tools/build/v1/build_system.htm *A* broken link: ../../../tools/build/v1/build_system.htm#user_globals *A* broken link: ../../../tools/build/v1/build_system.htm#variants libs/python/doc/tutorial/doc/html/python/hello.html: *A* broken link: ../../../../../example/tutorial/Jamrules libs/python/doc/tutorial/index.html: *A* broken link: ../../../LICENSE_1_0.txt libs/python/doc/v2/May2002.html: *A* broken link: ../../../../tools/build/v1/build_system.htm *A* broken link: ../../../../tools/build/v1/gen_aix_import_file.py libs/python/doc/v2/faq.html: *A* broken link: ../../../../tools/build/v1/build_system.htm |regex| libs/regex/performance/input.html: *A* unlinked file |regression| regression/.htaccess: *N* leading character of ".htaccess" is not alphabetic tools/regression/test/test-cases/incremental/bjam.log.1: *N* name contains more than one dot character ('.') tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/compile-fail.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/completed.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/expected/compile-fail.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/expected/completed.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/expected/lib.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/expected/misfire.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/expected/no-run.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/expected/run_pyd.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/expected/test-case.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/test-case.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/test-driver.xsl: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_re_match/expected/test_re_match.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_test_case_status/explicit-failures-markup.xml.test: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ *N* name contains more than one dot character ('.') *N* name exceeds 31 characters tools/regression/xsl_reports/test/test-components/test_test_structure/explicit-failures-markup.xml.test: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ *N* name contains more than one dot character ('.') *N* name exceeds 31 characters tools/regression/xsl_reports/xsl/html/issues_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/html/library_developer_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/html/library_user_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/html/make_tinyurl.html: *A* unlinked file tools/regression/xsl_reports/xsl/html/summary_developer_legend.html: *A* unlinked file 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boost/test/impl/plain_report_formatter.ipp: *U* unnamed namespace at line 45 boost/test/impl/progress_monitor.ipp: *U* unnamed namespace at line 38 boost/test/impl/results_collector.ipp: *U* unnamed namespace at line 106 boost/test/impl/results_reporter.ipp: *U* unnamed namespace at line 48 boost/test/impl/unit_test_log.ipp: *U* unnamed namespace at line 79 boost/test/impl/unit_test_monitor.ipp: *U* unnamed namespace at line 35 boost/test/impl/unit_test_parameters.ipp: *U* unnamed namespace at line 50 boost/test/results_collector.hpp: *U* unnamed namespace at line 40 boost/test/test_tools.hpp: *U* unnamed namespace at line 262 boost/test/utils/iterator/token_iterator.hpp: *U* unnamed namespace at line 166 boost/test/utils/named_params.hpp: *U* unnamed namespace at line 216 boost/test/utils/runtime/cla/dual_name_parameter.ipp: *U* unnamed namespace at line 43 boost/test/utils/runtime/cla/modifier.hpp: *U* unnamed namespace at line 34 boost/test/utils/runtime/env/modifier.hpp: *U* unnamed namespace at line 34 boost/test/utils/runtime/file/config_file.hpp: *U* unnamed namespace at line 169 *U* unnamed namespace at line 64 *U* unnamed namespace at line 74 boost/test/utils/runtime/file/config_file_iterator.hpp: *U* unnamed namespace at line 68 boost/test/utils/trivial_singleton.hpp: *U* unnamed namespace at line 52 *U* unnamed namespace at line 61 libs/test/build/msvc71_proj/config_file_iterator_test.vcproj: *N* name exceeds 31 characters libs/test/doc/components/prg_exec_monitor/compilation.html: *A* broken link: ../../../build/Jamfile libs/test/doc/components/prg_exec_monitor/index.html: *A* broken link: ../../../../../boost/test/cpp_main.hpp libs/test/doc/components/test_tools/index.html: *A* broken link: ../../tests/boost_check_equal_str.html libs/test/doc/components/test_tools/reference/BOOST_CHECK_CLOSE.html: *A* broken link: BOOST_CHECK_CLOSE_FRACTION.html libs/test/doc/components/test_tools/reference/BOOST_CHECK_MESSAGE.html: *A* broken link: 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[Report] 36 regressions on RC_1_34_0 (2007-03-19)
by Douglas Gregor 19 Mar '07

19 Mar '07

Boost Regression test failures Report time: 2007-03-17T04:53:32Z This report lists all regression test failures on release platforms. Detailed report: http://engineering.meta-comm.com/boost-regression/CVS-RC_1_34_0/developer/i… 36 failures in 4 libraries iostreams (6) optional (6) parameter (1) python (23) |iostreams| bzip2_test: msvc-7.1 msvc-8.0 gzip_test: msvc-7.1 msvc-8.0 zlib_test: msvc-7.1 msvc-8.0 |optional| optional_test: msvc-6.5 msvc-6.5 msvc-6.5_stlport4 msvc-7.0 optional_test_ref_fail2: msvc-7.1 msvc-8.0 |parameter| python_test: gcc-cygwin-3.4.4 |python| builtin_converters: gcc-3.4.5_linux gcc-4.0.3_linux gcc-4.1.0_linux gcc-4.1.0_linux_x86_64 import_: cw-9.4 gcc-mingw-3.4.2 gcc-mingw-3.4.5 intel-vc71-win-9.1 msvc-6.5 msvc-6.5 msvc-6.5_stlport4 msvc-7.0 msvc-7.1 msvc-7.1 msvc-7.1 msvc-7.1_stlport4 msvc-8.0 msvc-8.0 msvc-8.0 map_indexing_suite: gcc-3.4.5_linux gcc-4.0.3_linux gcc-4.1.0_linux gcc-4.1.0_linux_x86_64

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[SoC] SVG-graph-plotting questions
by Johannes Laudenberg 19 Mar '07

19 Mar '07

Hello there, I would really like to come up with a SoC-application for the graph-plotting-thing. However there are some questions that came to my mind: (1) It is mentioned, that data inside a container should be plotted as a function graph. Is this data arbitrarily collected or does it necessarily popped out of a math-function? The latter would make it way easier to interpolate a smooth function from the data (by passing the function as a whole or at least the first derivatives of the data). (2) Are there suggestions about the context this should be implemented in? Should it go into a specific boost-lib? Should it be a single function that takes loads of parameters (like color, range, size, ...). Should it be a class where the user would set these parameters as attributes? (3) It is said, that the data comes from some stl-containers. Just to be sure: You mean 2 dimensional containers for plotting a 2d function? Thanks in advance, Johannes

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Re: [boost] [sorting] What are the most complicated sorting problems?
by Sam Schetterer 19 Mar '07

19 Mar '07

Michael Lacher wrote: >* provide an easy way to sort lists of pointers (without having to make >a custom '<' operator each time).* Easy way to specify different >comparison operators for various subfields. ie. in stead of one complex >'<' operator, specify one for each subfield and then define sortorder >(which subfield first, ...) on sorttime. >* provide a good set of default '<' operators. at least: > - simple types (strings, numbers, ...) > - pointers to simple types > - pairs of the above >* Specify ascending vs. descending sorting. Trivial criteria really, but >reduces complexity (or number) of the '<' operators. >* return the n highest/lowest only. (optimized, ie: not full sort and >then cutting solution) First, to sort a list of pointers, they already have operator< defined, as they are a built in type. If the keys were pointers to arrays, then that problem can be solved by multikey wuicksoprt, which I am currently writing, which is a mix of quicksort and radixsort that works on keys that are arrays or vectors. Then, to specify various operator<s for different fields, you would use normal radix sort, (not using operator<,.but a byte extraction function) and you would start with the least significant field using the varaible bit radixsort, sort only using it, and pass the byte extraction the function. Then you would sort by the second least significant subfield, and pass whatever byte extraction function you wanted. However, to make that process much more simple, I will implement a version of radixsort and radix quicksort that allows you to pass more than one function(you will still hve to do a little bit of extra work).

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