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library name for boost 1.36
by Alain Leblanc 16 Nov '08

16 Nov '08

Hi, I just built boost 1.36 for the mac and all the library names have xgcc40 inserted in the middle, such as libboost_iostreams-xgcc40-mt-1_36.dylib. It breaks my makefiles that contain the option " -lboost_iostreams". Is there a reason for the xgcc40 in this version and not the others, and is there a way to instruct bjam not to include it in the filename. Thank, s

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[iostreams] How to overload the flush on a outpou stream
by vicente.botet 16 Nov '08

16 Nov '08

Hi, I want to to take a specific action when I flush an output stream. Can Boost.Iostreams be of any use? Thanks is advanve, Vicente

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get_posix_category in boost 1.36
by Daniel França 16 Nov '08

16 Nov '08

Hi people, I got an error of undefined get_posix_category in Boost 1.36, I found this article: http://blog.cplusplus-soup.com/2008/11/boost-c-library-patches-1360.htmlthat tell me that there's no get_posix_category on Boost 1.36: *Boost.System's Missing 'get_posix_category'* In Boost 1.36.0, Boost.System's get_posix_category function had been removed. For strict backwards compatibility, it has to be put in to let older versions of libraries that use the function to link properly. This has been submitted as issue (with patches attached) That's why I cant compile the asynchronous TCP Server example, I tried to get the patch but itsn't online anymore, anyone know how can I solve that? Best Regards, -- Daniel C. França Tecnosapiens: http://tecnosapiens.wordpress.com 24Quadros: http://24quadros.wordpress.com

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[phoenix] adding const to member_variable bind
by Christian Henning 16 Nov '08

16 Nov '08

Hi there, the following code doesn't compile since I'm iterating over a constant vector of points. struct point { double _prob; double _x; }; void test( const std::vector< point >& d ) { double sum_prob = std::accumulate( d.begin() , d.end() , 0.0 , arg1 + bind( &point::_prob, arg2 ) ); } int _tmain(int argc, _TCHAR* argv[]) { std::vector< point > d; test( d ); return 0; } My question is how can I convert or cast the "&point::_prob" into a const reference? I tried several ways but they all don't work. The only thing that worked was to add const getter function in my point structure. Like this: struct point { point( double prob, double x ) : _prob( prob ), _x( x ) {} const double& prob() const { return _prob; } double _prob; double _x; }; Thanks, Christian

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tokenizer
by Vidhu Choudhary 16 Nov '08

16 Nov '08

Hi I am using tokenizer from boost. On my windows machine I want to install tokenizer only. Can you please suggest how can I do that Thank you Vidhu

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Boost conformance to standard c++0x libraries statement
by vicente.botet 15 Nov '08

15 Nov '08

Hi, There are a lot of Boost libraries already included in the C++ Standards Committee's Library Technical Report (TR1). More Boost libraries are proposed for the upcoming TR2. As all these libraries do not conform completly to the standard for different raisons: the compliler do not support some feautres of the C++0x, the emulation seems to complex or any other justification. I think that it will help the users to have a clear statement, library by library, of which features the library conform to or not. This statement should contain the library feature(class, typedef, constants, functions, ...), dependencies on other C++0x features, whether it conforms on C++0x compilers supporting the needed compiler features, if it use some workaround on other compilers and finaly for the non conformant features why the library do not conforms. It will be also useful to state which features on the library are not on the standard. I have prepared as an example a table for the Boost.Thread library (limited tothread and this thread API). Anthony the informations on these tables could be wrong. Attached boost_thread_conformance.qbk and boost_thread_conformance.html Any comments and ideas are welcome. HTH, Vicente

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Simple threading question (I hope)
by Alec Munro 15 Nov '08

15 Nov '08

Hi List, I'm fairly new to multithreading, especially in C++. Things seem generally straightforward when using boost::thread, but there was one question I had. I have a mutex that I use to control access to a data processing object. Whenever I receive new data, I attempt to lock the mutex, and process it. However, I think it's possible that I might receive several data packets while I'm processing, and it's important that these packets are processed in order. So I suppose my question is, when a mutex is unlocked, how is it determined which thread gets to lock it next? Thanks, Alec Munro --------------------------------------------------------------------- This transmission (including any attachments) may contain confidential information, privileged material (including material protected by the solicitor-client or other applicable privileges), or constitute non-public information. Any use of this information by anyone other than the intended recipient is prohibited. If you have received this transmission in error, please immediately reply to the sender and delete this information from your system. Use, dissemination, distribution, or reproduction of this transmission by unintended recipients is not authorized and may be unlawful.

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[swap] boost::swap roadmap?
by JOAQUIN M. LOPEZ MUÑOZ 15 Nov '08

15 Nov '08

Hello, Is Boost.Swap going to make it into Boost 1.38? Thank you, Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

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Re: [Boost-users] Boost Static Linking Woes
by Brian Dawn 15 Nov '08

15 Nov '08

Alright, I recompiled boost with runtime-link=static but I got the same error. >> After doing this, I guess there is some "magic" preprocessor define you need to specify in your project, so the boost config header becomes aware of what boost variant you are using... I have looked for some sort of preprocessor definition for static builds, but I couldn't seem to find any. Does anyone happen to know what this is/could be? >> I believe the only exception to this is Boost.Python, but that has special requirements that make static linking much more tricky I believe. I actually am linking to Boost.Python, and Boost.Filesystem (both really nice libraries). However I probably should have said earlier, but I receive 2 "Mixing a dll boost library with a static runtime is a really bad idea..." errors. I assume 1 is for python and the other for filesystem? Any help is appreciated, I really need these to be statically linked. Thanks everyone! -Brian.

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Regex - Reading CSV files like MS Excel does
by Jeff Dunlap 14 Nov '08

14 Nov '08

The expression regex e(",") handles files in a clean format such as: field 1,field 2,field 3 I would like to read some CSV files where there may be fields that contain a comma (enclosed in ""): 1999,Smith, Mike, "Smith, Mike", 55 1999,Doe, Jane, "Doe, Jane", 45 And if possible, I would like to handle commas and quotes within the field: 1999,Doe, Jane, "Doe, Jane "Happy Gurl"", 45 Can someone help me with this please? Thank you very much

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