- Boost - lists.boost.org

(no subject)
by bwood 18 Jun '07

18 Jun '07

Sascha Seewald writes: >Mathias Gaunard wrote: >>Also, I believe the narrow/wide characters and locales stuff >>is broken beyond all repair, so I wouldn't recommend to do >>anything related to that. > >I agree on this. I think a limited scope makes sense as well. I wouldn't attempt to include wide characters, locales or text. If the effort turns out well, it should be possible to build on it later. Brian Wood

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Boost inspection notification (2007-06-18/RC_1_34_0) *X*
by Rene Rivera 18 Jun '07

18 Jun '07

Boost Inspection Report Run Date: 16:07:19 UTC, Monday 18 June 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: 11452 files scanned 909 directories scanned (including root) 163 problems reported Problem counts: 0 files with invalid line endings 0 bookmarks with invalid characters 3 invalid urls 71 broken links 21 unlinked files 22 file/directory names issues 2 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 (1) build (1) date_time (1) doc (2) filesystem (3) graph (3) iostreams (2) lambda (3) math (8) more (4) mpl (4) multi_array (2) ptr_container (1) python (8) 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/details.html#changes |build| tools/build/v2/test/test_system.html: *A* unlinked file |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/tr2_proposal.html: *A* invalid URL (hardwired file): file:///C|/boost/site/libs/filesystem/doc/operations.htm#complete_note |graph| boost/graph/relax.hpp: *T* 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/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/cvs.html: *A* unlinked file more/getting_started/unix-variants.html: *A* broken link: ../../doc/html/thread/build.html#thread.build more/getting_started/windows.html: *A* broken link: ../../doc/html/thread/build.html#thread.build more/separate_compilation.html: *A* broken link: 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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/ 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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 tools/regression/xsl_reports/xsl/html/summary_user_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/v2/html/issues_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/v2/html/library_developer_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/v2/html/library_user_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/v2/html/make_tinyurl.html: *A* unlinked file tools/regression/xsl_reports/xsl/v2/html/summary_developer_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/v2/html/summary_user_legend.html: *A* unlinked file |serialization| libs/serialization/src/basic_xml_grammar.ipp: *U* unnamed namespace at line 43 |test| boost/test/floating_point_comparison.hpp: *U* unnamed namespace at line 206 *U* unnamed namespace at line 228 boost/test/impl/cpp_main.ipp: *U* unnamed namespace at line 42 boost/test/impl/exception_safety.ipp: *U* unnamed namespace at line 400 boost/test/impl/framework.ipp: *U* unnamed namespace at line 199 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: BOOST_MESSAGE.html libs/test/doc/components/test_tools/reference/BOOST_CHECK_SMALL.html: *A* broken link: BOOST_CHECK_CLOSE_FRACTION.html libs/test/doc/components/test_tools/reference/tools_list.html: *A* broken link: ../../btl1.gif *A* broken link: BOOST_CHECK_CLOSE_FRACTION.html libs/test/doc/components/utf/compilation.html: *A* broken link: ../../../build/Jamfile 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broken link: ../execution_monitor/index.html libs/test/doc/tutorials/new_year_resolution.html: *A* broken link: ../../../../../../LICENSE_1_0.txt |type_traits| libs/type_traits/cxx_type_traits.htm: *A* unlinked file

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Boost inspection notification (2007-06-18/RC_1_34_0) *LC*
by Rene Rivera 18 Jun '07

18 Jun '07

Boost Inspection Report Run Date: 16:07:26 UTC, Monday 18 June 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: 11452 files scanned 909 directories scanned (including root) 1059 problems reported Problem counts: 661 files missing Boost license info or having wrong reference text 398 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 (417) multi_array (13) numeric (188) optional (1) people (4) program_options (35) property_map (15) ptr_container (8) python (14) 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* tools/build/v2/doc/src/ advanced.xml: *C* *L* architecture.xml: *C* *L* catalog.xml: *C* *L* extending.xml: *C* *L* faq.xml: *C* *L* fragments.xml: *C* *L* howto.xml: *C* *L* install.xml: *C* *L* recipes.xml: *C* *L* reference.xml: *C* *L* standalone.xml: *C* *L* tutorial.xml: *C* *L* userman.xml: *C* *L* tools/build/v2/example/generate/ REAME.txt: *C* *L* a.cpp: *C* *L* tools/build/v2/example/generator/ README.txt: *C* *L* soap.jam: *C* *L* tools/build/v2/example/python_modules/ python_helpers.jam: *C* *L* python_helpers.py: *C* *L* tools/build/v2/test/ abs_workdir.py: *C* *L* dependency_property.py: *L* dependency_test.py: *C* *L* direct_request_test.py: *C* *L* dll_path.py: *L* double_loading.py: *L* duplicate.py: *L* echo_args.jam: *C* *L* empty.jam: *C* *L* expansion.py: *L* explicit.py: *L* gcc_runtime.py: *L* tools/build/v2/test/project-test3/lib3/ Jamfile: *C* *L* tools/build/v2/test/ readme.txt: *C* *L* svn_tree.py: *L* tag.py: *L* test_system.html: *L* tools/build/v2/tools/ sun.jam: *L* xsltproc.jam: *L* |concept_check| libs/concept_check/ bibliography.htm: *L* concept_check.htm: *L* concept_covering.htm: *L* creating_concepts.htm: *L* libs/concept_check/doc/ Jamfile.v2: *C* *L* libs/concept_check/doc/reference/ Assignable.xml: *L* BidirectionalIterator.xml: *L* CopyConstructible.xml: *L* DefaultConstructible.xml: *L* EqualityComparable.xml: *L* ForwardIterator.xml: *L* InputIterator.xml: *L* LessThanComparable.xml: *L* OutputIterator.xml: *L* RandomAccessIterator.xml: *L* SignedInteger.xml: *L* concepts.xml: *L* libs/concept_check/ implementation.htm: *L* prog_with_concepts.htm: *L* reference.htm: *L* using_concept_check.htm: *L* |conversion| libs/conversion/ cast.htm: *L* index.html: *C* *L* lexical_cast.htm: *L* libs/conversion/test/ Jamfile.v2: *L* |doc| doc/html/ docutils.css: *L* |filesystem| libs/filesystem/doc/ tr2_proposal.html: *L* libs/filesystem/src/ utf8_codecvt_facet.hpp: *L* |function| boost/function/detail/ gen_maybe_include.pl: *L* |graph| libs/graph/doc/ lengauer_tarjan_dominator.htm: *L* |inspect| tools/inspect/build/ Jamfile.v2: *L* |integer| libs/integer/ cstdint.htm: *C* *L* libs/integer/doc/ integer_mask.html: *L* static_min_max.html: *L* libs/integer/ index.html: *C* *L* integer.htm: *L* integer_traits.html: *C* *L* |lambda| libs/lambda/doc/ Jamfile.v2: *C* *L* libs/lambda/doc/detail/ README: *C* *L* lambda_doc.xsl: *C* *L* lambda_doc_chunks.xsl: *C* *L* libs/lambda/test/ Makefile: *C* *L* |libs| libs/ expected_results.xml: *C* *L* maintainers.txt: *C* *L* platform_maintainers.txt: *C* *L* |logic| libs/logic/doc/ Jamfile.v2: *C* *L* |math| boost/math/ common_factor_rt.hpp: *L* |more| more/ error_handling.html: *L* generic_exception_safety.html: *C* *L* generic_programming.html: *L* getting_started.rst: *C* *L* moderators.html: *C* regression.html: *C* *L* report-apr-2006.html: *C* *L* report-jan-2006.html: *C* *L* |mpl| libs/mpl/doc/src/refmanual/ ASSERT.rst: *C* *L* ASSERT_MSG.rst: *C* *L* ASSERT_NOT.rst: *C* *L* ASSERT_RELATION.rst: *C* *L* AUX_LAMBDA_SUPPORT.rst: *C* *L* Acknowledgements.rst: *C* *L* Algorithms-Iteration.rst: *C* *L* Algorithms-Querying.rst: *C* *L* Algorithms-Runtime.rst: *C* *L* Algorithms-Transformation.rst: *C* *L* Algorithms.rst: *C* *L* AssociativeSequence.rst: *C* *L* BackExtensibleSequence.rst: *C* *L* BidirectionalIterator.rst: *C* *L* BidirectionalSequence.rst: *C* *L* CFG_NO_HAS_XXX.rst: *C* *L* CFG_NO_PREPROCESSED.rst: *C* *L* Categorized.rst: *C* *L* Data.rst: *C* *L* ExtensibleAssociativeSeq.rst: *C* *L* ExtensibleSequence.rst: *C* *L* ForwardIterator.rst: *C* *L* ForwardSequence.rst: *C* *L* FrontExtensibleSequence.rst: *C* *L* HAS_XXX_TRAIT_DEF.rst: *C* *L* HAS_XXX_TRAIT_NAMED_DEF.rst: *C* *L* Inserter.rst: *C* *L* IntegralConstant.rst: *C* *L* IntegralSequenceWrapper.rst: *C* *L* Iterators-Concepts.rst: *C* *L* Iterators-Metafunctions.rst: *C* *L* Iterators.rst: *C* *L* LIMIT_LIST_SIZE.rst: *C* *L* LIMIT_MAP_SIZE.rst: *C* *L* 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[Report] 0 regressions on RC_1_34_0 (2007-06-18)
by Douglas Gregor 18 Jun '07

18 Jun '07

Boost Regression test failures Report time: 2007-06-18T04:07:26Z 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… No failures! Yay!

1 0

Resolution of operator decision. [Was "Progress of Boost.SVG_Plot"]
by Jake Voytko 18 Jun '07

18 Jun '07

All, After a lengthy discussion on the pros/cons of the operator<<() overloading, this has become a sore spot for a lot of people. My vision for this library is, above all, for people to use it and enjoy using it. That being said, I converted the library to using .set___() methods that allow chaining, which I feel is a good compromise. Some contributors were against even this, but you can't please all the people all the time. If you want to see how the new syntax looks, there is an example on the project wiki: http://svn.boost.org/trac/boost/wiki/soc/2007/VisualizationOfContainers Or if you want to see how the output of the project progressed in a week (major architectural changes nonwithstanding), please see this page (now with IE7 w/ plugin support): http://www.tcnj.edu/~voytko2/svg.htm I'd like to thank everybody who took the time to make suggestions/contributions. I'd rather issues come up now than during a review :) Jake

2 2

Tracking Review Requests and RM Applications
by João Abecasis 18 Jun '07

18 Jun '07

Hi! For those who missed it, I suggested on the "Languishing review requests" thread that we keep track of Review Requests and Applications for Review Managers in the ticketing system. The goal being to avoid the "silent rejection" problem. A bonus side-effect is that each proposed library gets a unique place where it's progress along the Boost process can be tracked. Comments on library review requests would include links to relevant discussion on the list and rationale for decisions made. Each ticket would be closed upon final acceptance and merging of the code in the trunk, or rejection of the library. Below I offer some suggestions on how this could work, just to get the discussion rolling. * Ticket Type: we could use one or two more ticket types: (Library) Review Requests and a Review Manager Application. Perhaps a single generic "Review Request" would work just as well, to begin with. We could also reuse one of the existing ticket types (e.g. Tasks?), but I think a clearer separation would work better. * Reporter: The person submitting the review request or RM application * Status: Assigned would be used when a Review Manager has been assigned. He is responsible for "closing" the review ticket. * Owner: per above, this would be the Review Manager for a library submission and the Review Wizard for other types of requests. * Milestone: Perhaps a bit far-fetched, but this could be used to follow the library library submission process (http://boost.org/more/submission_process.htm) This allows one to check at a glance libraries in each stage. It could also clutter the Roadmap page. None of these Milestone Steps would advance: tickets would progress from one to another. * Version: Version of Boost with which the library was tested? Version for inclusion after acceptance? * Component: "Boost Process" And if you've got this far... Do you think this is a good idea in general? Do you think something like this adds more "process" with no or little gain? Is it any friendlier to potential submitters? How about potential review managers? ... All comments welcome. Best regards, João

4 4

[graph] managed vertex indexing
by Andrew Sutton 18 Jun '07

18 Jun '07

All Interested, For my Summer of Code proposal, I have been working on the usability of the Boost.Graph library, basically adding a couple wrappers to make it easier to work with undirected and directed graphs. One aspect of these classes is that they do not use the typical vector storage for vertices, edges, or the out edge list. In this case, list storage provides more iterator and descriptor stability so we (mentor Jeremy Siek and myself) decided go that direction. This decision has some interesting fallout since almost every example for Boost.Graph, including that in the documentation is written using vecS for most of the storage facilities. This lead some interesting discoveries like, for example, that num_vertices(g) is O(n) with listS vertex storage under GCC - who knew?. also that most graphs declared using `listS` will fail to run correctly with default parameters on just about every algorithm. And finally, that most of the examples given in the documentation and libs directory will also fail if you stick this line of code just before a call to any core algorithm: remove_vertex(*vertices(g).first, g); Except for the linear time num_vertices(g) call, these problems are caused by indiscriminate use of vertex descriptors as indices - in fact, that's exactly the reason that the above line of code will cause most examples to fail. I've written down a solution to this and added it to the documentation I've been working for my project. It essentially involves three functions that can be used to help manage vertex indices. Essentially they are: get_vertex_index(v, g) max_vertex_index(g) renumber_vertex_indidces(g) Correct use of these functions will solve a number of problems. The more complete proposal is in subversion at: http://svn.boost.org/trac/boost/browser/sandbox/SOC/2007/graphs/libs/ graph/doc/quickbook/indexing.qbk Part the related implementation is here: http://svn.boost.org/trac/boost/browser/sandbox/SOC/2007/graphs/boost/ graph/undirected_graph.hpp The three functions in question are the last in the file, although they do call some member functions of the graph class itself. I'd be grateful to some suggestions for improvement or other comments. Andrew Sutton asutton(a)cs.kent.edu

2 2

Re: [boost] Request for consideration for my weak_ptr class
by me22 18 Jun '07

18 Jun '07

On 08/06/07, Alex Burton <alexibu(a)mac.com> wrote: > I understand there would be a collision with boost::weak_ptr, which is used for special scenarios with shared_ptr as I understand. > weak_ptr is essential for breaking cyclic references. > A fair comment would be that this class actually does nothing, that a normal pointer would do and this is true. > raw_ptr might be a better name, then. It's less than weak, since weak pointers are actually quite intelligent, knowing whether or not they're dangling. > It allows my code to be free of the * pointer notation. > All pointers look the same, ie shared_ptr<Foo>, scoped_ptr<Foo>, weak_ptr<Foo> > Those smart pointers are all well-behaved, though. raw pointers are not. > It can be used in many places a reference would be used. > You can't get the address of temporaries, so I don't understand where you'd use it in place of references... > In the above code, if vector<Foo> foos was changed to vector< shared_ptr<Foo> > the code will still work perfectly with out change. > > I find this really useful because often small structs become polymorphic classes (requiring shared_ptr) as code evolves. > > The vector example is the best, but even when returning a pointer to something like this it is good: > > if Bar mBar becomes scoped_ptr<Bar> mBar, the accessor still compiles. > For your vector example, have you considered starting with vector<Foo>, then changing to ptr_vector<IFoo> later? I think that'll get you the same effect, but it's much safer. That constructor from a reference also looks like it'd be far too easy to mistakenly return a pointer to a local variable. I'm not convinced that your method is much superior to returning a reference and, if the member does become a pointer, just adding the * to dereference it in the accessor. Probably not quite following just yet, ~ Scott

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Re: [boost] Tracking Review Requests and RM Applications
by Tom Brinkman 17 Jun '07

17 Jun '07

>> Once I start the pages I'll be sure to explicitly mention that >> this is not yet the approved submission process, but still a work in >> progress. All the ideas I posted were meant to get the discussion >> started so I'm not attached to them in any way. While we're defining >> this, all can be changed. In the end, I'd like the process itself to be >> as streamlined as possible for everyone involved. We're all here for the >> code... ehm... and the docs, of course ;-) All sounds good to me. I'm shur your on to something with these ideas. Thats the way to get agreement around here, you've got to get something up and going, at least a prototype, so people can see and evaluate it. Integrating the review process with the svn tracking makes more sense to me every time I think about it.

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[Fusion] Notice of breaking change
by dan marsden 17 Jun '07

17 Jun '07

The definition of Fusion polymorphic function object will be changed shortly to be consistent with boost.resultof. Instead of requiring a nested result metafunction of the form: template<typename T0, typename T1, ... typename TN> struct result { typedef xxx type; }; A polymorphic function object will instead simply be required to suppport boost::result_of<F(A,B,...Z)>::type as a valid expression. This will break some Fusion client code, specifically, if you are using fold, accumulate, transform, or a lot of the components in the functional section of the library, you may need to make changes to support this change. The change should be entered into CVS head over the forthcoming weekend. Apologies to anyone whos code this breaks, but this should make things more consistent with the rest of boost going forwards. Cheers Dan ___________________________________________________________ Yahoo! Mail is the world's favourite email. Don't settle for less, sign up for your free account today http://uk.rd.yahoo.com/evt=44106/*http://uk.docs.yahoo.com/mail/winter07.ht…

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