- Boost-users - lists.boost.org

date-time
by Jonathan Oulds 21 Jul '04

21 Jul '04

Could anyone explain to me why there is not a default constructor for boost::gregorian::date_time and boost::posix_time::ptime. I implemented a simple constructor where both classes are created as 'not_a_date_time'. The only problem I have had is compiling my code on other peoples machines that do not have my modification to the date_time library. jonathan

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RE: [Boost-users] database lib
by Ajit Jadhav 21 Jul '04

21 Jul '04

Regarding DTL, see http://lists.boost.org/MailArchives/boost/msg13153.php. Not sure where it stands now. > -----Original Message----- > From: boost-users-bounces(a)lists.boost.org > [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Chris > Sent: Wednesday, July 21, 2004 11:13 AM > To: boost-users(a)lists.boost.org > Subject: [Boost-users] database lib > > > Hi all, > > I am wondering if there are any plans to include a database > library, for example for ODBC in the boost library. > > Please bear in mind that I am new to the boost libraries and > find them really cool. > > But like the socket library I found it because of an old > post, so that is why I am asking about the database library. > > Also I found this library really interesting and am using it > in a couple of small spike solutions: > http://dtemplatelib.sourceforge.net/index.htm > (Any comments > on the library are welcome) > > Thanks, > Chris > > > > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/bo> ost-users >

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Testing boost installation
by Tom Puverle 21 Jul '04

21 Jul '04

In our environment it is a requirement that all libraries that are about to be deployed are tested. I would like to know if there is a way in which I can run the regression tests against the installed version of the boost headers and libraries, so that I can check they have been built and installed correctly. Thanks. _________________________________________________________________ Want to block unwanted pop-ups? Download the free MSN Toolbar now! http://toolbar.msn.co.uk/

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boost equivalent to sgi hash_map?
by Stephen torri 21 Jul '04

21 Jul '04

Is there a boost equivalent to SGI hash_map? I am looking for a data structure that taking the key finds the data in one step O(1). Stephen

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FW: boost::filesystem on WIN32: Problem passing pointer of native to path
by Christian Hoffmann 21 Jul '04

21 Jul '04

Hello... We have problems here passing the boost::filesystem::native function as a checker on WIN32 platform, eg. like this ... boost::filesystem::path path ("d:\hello\hello", boost::filesystem::native); ... When we take the address of the function "boost::filesystem::native(...)" in dll A and the pass it to boost filesystem dll, the various comparisons with "native" inside path_posix_windows.cpp:m_path_append ( const std::string & src, name_check checker ) fail, and and the code throws an invalid name exception. (e.g. line 242: if ( (checker == no_check || checker == native) && src.size() >= 2 ) fails as checker != native) The microsoft compiler takes the address into an internal function table, instead of the adress of the "real" boost::filesystem::native () function, so the comparison can never be true. Anybody got an idea what to do? PS: Getting the address of the native function like this works: path ("d:\hello\hell", reinterpret_cast<boost::filesystem::path::name_check> (GetProcAddress (GetModuleHandle("boost_filesystem-vc71-mt-gd-1_31"), "?native@filesystem@boost@@YA_NABV?$basic_string@DU?$char_traits@D@std@@ V?$allocator@D@2@@std@@@Z"))); But is not really an option... -- Christian Hoffmann This message, including any attachments, is intended only for the person(s) to whom it is addressed. If you received it in error, please let us know and delete the message from your system. This message may be confidential and may fall under the duty of non-disclosure. Any use by others than the intended addressee is prohibited. Trema shall not be liable for any damage related to the electronic transmission of this message, such as failure or delay of its delivery, interception or manipulation by third parties, or transmission of viruses or other malicious code.

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How to install boost step by step approach
by sena 21 Jul '04

21 Jul '04

Hi Friends, I am trying to use Bayer++ classes for Kalman filter But before that I have to install boost c++ library. My fisrt effort was not successful. Can anyone tell me how to install it in Redhat Linux-8? I need step by step with best bug free versions Thanks a lot Sena Seneviratene Computer Engineering Lab Sydney University Australia

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Regex Problems
by Pietje Leugenaar 21 Jul '04

21 Jul '04

Hi, compiling "a{7}" or any repeat with curly brackets gives me an "invalid regex synyax"! Any clues or workarounds? Then boost::regex expression("GO:(\d+)",regex::bk_refs); string str=boost::regex_replace("GO:000015|GO:00016",expression,"$1") str equals "00001500015|00016" instead of the expected "000015|00016"!? I constructed a workaround for the latter problem with an explicit loop over regex_iterator and such but this not really handy... Thanx for any feedback!! Kenny _________________________________________________________________ Plannen om een nieuwe computer te kopen? Kijk eens hier.. http://www.msn.be/shopping/dell_bis/

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database lib
by Chris 21 Jul '04

21 Jul '04

Hi all, I am wondering if there are any plans to include a database library, for example for ODBC in the boost library. Please bear in mind that I am new to the boost libraries and find them really cool. But like the socket library I found it because of an old post, so that is why I am asking about the database library. Also I found this library really interesting and am using it in a couple of small spike solutions: http://dtemplatelib.sourceforge.net/index.htm (Any comments on the library are welcome) Thanks, Chris

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View the shortest paths
by Daniele Carlucci 20 Jul '04

20 Jul '04

Hi, Which is the command to visualize a path in a graph? For ie I want to visualize all the shortest path inside a graph, or all the path from a source to a dest. Thanks Daniele

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Info about a graph with structure instead node
by Daniele Carlucci 20 Jul '04

20 Jul '04

Hi all, I'm a newby in this library. I'm interested to make a graph of network. It's possible or is very hard to make? I want to have inside every node a struct. Thanks Daniele

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