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[boost][tokenizer] std::wstring question
by David Klein 08 Jun '05

08 Jun '05

hi, Is there a reason why the template params for the tokenizer class are std::string? This makes it "harder" to use it with std::wstring. You have to write: tokenizer<char_separator<wchar_t>, std::wstring::const_iterator, std::wstring> tkz; ... Instead of: tokenizer<char_separator<wchar_t> > tkz; ... (i guess i'm very lazy ;) I changed the scope of the string_type typedef for the xxx_separator classes to public, and used this typedef in the tokenizer template params. Now std::wstring works like std::string for me. *** token_functions.hpp *** class char_separator/char_delimiters_separator/... { public: typedef std::basic_string<Char,Traits> string_type; ... }; *** tokenizer.hpp *** template < typename TokenizerFunc = char_delimiters_separator<char>, typename Iterator = /*std::string::const_iterator*/ TokenizerFunc::string_type::const_iterator, typename Type = /*std::string*/ TokenizerFunc::string_type > class tokenizer {...}; regards /dave

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Boost Test - catching assertions, marking them as a success?
by Kevin Wheatley 08 Jun '05

08 Jun '05

Hi, I'm looking at using Boost Test as a means to carry out unit tests and wondered if there is a guard for assertions like there is for exception handling to say, "this test should assert()", fail if it does not. This would be really handy, especially if it was available in the Auto unit tests: BOOST_AUTO_UNIT_TEST_SHOULD_ASSERT( object_calls_assert ) { myobject foo; foo.callAssert(); } or something similar. Kevin -- | Kevin Wheatley, Cinesite (Europe) Ltd | Nobody thinks this | | Senior Technology | My employer for certain | | And Network Systems Architect | Not even myself |

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RE: [Boost-users] Problem with boost::signal. How to call just one slotin signal
by Brian Braatz 08 Jun '05

08 Jun '05

Forgive me. I reviewed your code- but I am having a hard time totally seeing what you are trying to do (by the code alone). Allow me to offer a suggestion from what I understand of your description of the problem: 1- For your special callback, save it off somewhere as a boost.function<> 2- then call the boost.function<> you have saved before calling your signals It is not clear to me if you want the "special" callback to also be in the signal. If so, you can add it (and the above still works) Hope that helps Brian > -----Original Message----- > From: boost-users-bounces(a)lists.boost.org [mailto:boost-users- > bounces(a)lists.boost.org] On Behalf Of Juho Mäkinen > Sent: Monday, June 06, 2005 11:56 PM > To: boost-users(a)lists.boost.org > Subject: [Boost-users] Problem with boost::signal. How to call just one > slotin signal > > Hello. > > I'm having problems with boost::signal. I have a simple callback > system: > > typedef boost::signal<void (const String &)> StringCallbacks; > TSharedPtr<StringCallbacks> stringCallbacks; > > stringCallbacks contains void (Const String &) -callback functions. > New callback functions are registered into the callback system with > registerCallback -function: > > template<class VarType> class SettingUpdater { > private: > VarType & reference; > > SettingUpdater(VarType & var) : reference(var) { } > > public: > void operator()(const String & setting) > { > // do someting irrelevant for the question here > // with the reference -variable > } > }; > > boost::signals::connection registerCallback(StringCallbacks::slot_type > callback) > { > // PROBLEM: I'd like to call the callback once without calling every > callback > // which are possibly registered already into the signal before this. > > // Register the new callback into the signal. > return stringCallbacks.get()->connect(callback); > } > > The actual usage of registerCallback: > int localVariable; > registerCallback(SettingUpdater<int>(localVariable)); > > Question: > As you might already see above, I'd like to call the callback function > once in the registerCallback function without calling every callback > already registered in the stringCallbacks signal. > I first tried something like > String param = "foo"; > callback(param); > but that won't compile. > > I also tried callback.get_slot_function()(param); > That compiles, but it won't execute the operator() -function in > SettingUpdater. > > Calling the signal will execute all callbacks registered, so the > SettingUpdater > function seems working. How I can execute the operator() function > in SettingUpdater<> inside registerCallback function by the > callback parameter passed to registerCallback function? > > Thanks in advance =) > > - Juho Mäkinen > > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users

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boost::filesystem bug for win98
by Sebastien Martel 07 Jun '05

07 Jun '05

Hello, The windows implementation for find_first_file is flawed for windows 98. The problem is appending \* to the dir path: this is not supported for win98. Here is a possible fix that has been working for me quite well. inline const char * find_first_file( const char * dir, BOOST_HANDLE & handle, BOOST_SYSTEM_DIRECTORY_TYPE & data ) { // std::cout << "find_first_file " << dir << std::endl; // \* is not supported on win98 //std::string dirpath( std::string(dir) + "\\*" ); std::string dirpath( dir ); dirpath += ( dirpath.empty() || dirpath[dirpath.size()-1] != '\\' ) ? "\\*" : "*"; return ( (handle = ::FindFirstFileA( dirpath.c_str(), &data )) == BOOST_INVALID_HANDLE_VALUE ) ? 0 : data.cFileName; } -- Best regards, Sebastien mailto:smartel@real.com

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Problem with boost::signal. How to call just one slot in signal
by Juho Mäkinen 07 Jun '05

07 Jun '05

Hello. I'm having problems with boost::signal. I have a simple callback system: typedef boost::signal<void (const String &)> StringCallbacks; TSharedPtr<StringCallbacks> stringCallbacks; stringCallbacks contains void (Const String &) -callback functions. New callback functions are registered into the callback system with registerCallback -function: template<class VarType> class SettingUpdater { private: VarType & reference; SettingUpdater(VarType & var) : reference(var) { } public: void operator()(const String & setting) { // do someting irrelevant for the question here // with the reference -variable } }; boost::signals::connection registerCallback(StringCallbacks::slot_type callback) { // PROBLEM: I'd like to call the callback once without calling every callback // which are possibly registered already into the signal before this. // Register the new callback into the signal. return stringCallbacks.get()->connect(callback); } The actual usage of registerCallback: int localVariable; registerCallback(SettingUpdater<int>(localVariable)); Question: As you might already see above, I'd like to call the callback function once in the registerCallback function without calling every callback already registered in the stringCallbacks signal. I first tried something like String param = "foo"; callback(param); but that won't compile. I also tried callback.get_slot_function()(param); That compiles, but it won't execute the operator() -function in SettingUpdater. Calling the signal will execute all callbacks registered, so the SettingUpdater function seems working. How I can execute the operator() function in SettingUpdater<> inside registerCallback function by the callback parameter passed to registerCallback function? Thanks in advance =) - Juho Mäkinen

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boost::trim Am I wrong?
by Sheng QuanHu 07 Jun '05

07 Jun '05

I just write a simple test of trim: #include <string> #include <boost/algorithm/string.hpp> int main(){ using namespace std; string temp = " just test "; boost::trim(temp); return 0; } but it couldn't pass the compile, error was: [C++ Error] trim.hpp(233): E2285 Could not find a match for 'detail::trim_end(undefined,undefined,detail::is_classifiedF)' [C++ Error] trim.hpp(126): E2285 Could not find a match for 'detail::trim_begin(undefined,undefined,detail::is_classifiedF)' but when I move the "using namespace std;" out of main function: #include <string> #include <boost/algorithm/string.hpp> using namespace std; int main(){ string temp = " just test "; boost::trim(temp); return 0; } I don't know why?

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minor error in example for numeric_cast
by Markus Werle 06 Jun '05

06 Jun '05

Hi! Just a minor documentation bug, but worth to be fixed: In the example on page http://www.boost.org/libs/numeric/conversion/doc/numeric_cast.html the line #include <boost/numeric_cast.hpp> should be replaced by #include <boost/cast.hpp> best regards, Markus

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Re: Re: [Boost-users] boost::trim Am I wrong?
by Sheng QuanHu 06 Jun '05

06 Jun '05

Hi, Pavol Droba: I am using borland c++builder 6. Best regards, Tiger ----- Your mail begin ----- Sender : Pavol Droba To : boost-users Time : 2005-06-06, 16:37:00 Subject: Re: [Boost-users] boost::trim Am I wrong? Hi, I'm not sure what the problem could be. But it seems like some bug in a compiler. So my first question is: What compiler do you use? Regards, Pavol ----- Your mail finished -----

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Whos Using Boost?
by John Maddock 06 Jun '05

06 Jun '05

There are now a set of prototype "Who's Using Boost?" pages available at: http://freespace.virgin.net/boost.regex/who/html/index.html Comments and suggests welcome, but in particular we need more case studies/products etc that are using Boost to be listed. If you have a product or project that could be listed then please see the submission guidelines at: http://freespace.virgin.net/boost.regex/who/html/who_s_using_boost_/submit.… Regards, John.

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FOREACH issues with GCC 3.2.3
by Dave Steffen 04 Jun '05

04 Jun '05

Hi Folks, It recently became known that our customer is using GCC 3.2.3; so I tried to compile our code (which makes heavy use of the FOREACH macro) with 3.2.3. I get a _ton_ of error messages like: warning: unused variable `bool _foreach_rvalue' Since we always compile with options that make warnings fatal, a large part of our project can't compiler with GCC 3.2.3. Has anyone else seen this? Does anyone have a solution? (e.g. is there a hack that will fool compilers into thinking _foreach_rvalue is used?) Thanks!! ---------------------------------------------------------------------- Dave Steffen, Ph.D. "There are two ways to write error-free Software Engineer IV programs; only the third one works." Numerica Corporation ph (970) 419-8343 x27 "Pie are not square. Pie are round. fax (970) 223-6797 Cornbread are square" dgsteffen(a)numerica.us ... anon (usenet) ___________________ Numerica Disclaimer: This message and any attachments are intended only for the individual or entity to which the message is addressed. It is proprietary and may contain privileged information. If you are neither the intended recipient nor the agent responsible for delivering the message to the intended recipient, you are hereby notified that any review, retransmission, dissemination, or taking of any action in reliance upon, the information in this communication is strictly prohibited, and may be unlawful. If you feel you have received this communication in error, please notify us immediately by returning this Email to the sender and deleting it from your computer.

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