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regex_match doesn't match in an embedded string
by soleani 17 Jan '02

17 Jan '02

Hi there, not sure how I could write that Subject line. Sorry :-) Here's the thing, I have a file with the following: KEY1 = ${short_localhost} KEY2 = bbbf<control2.cfg:OTHER_SECTION:${long_localhost}>aaaf:<he I need to extract the value between the {} when it starts with a $. My expression works ok for KEY1 (the value part, the string to the right of the equal sign), however it doesn't match for the value for KEY2. This is what I have: static const boost::regex expression( "\\$\\{(.*?)\\}" ); boost::cmatch what; if ( boost::regex_match( input, what, expression ) ) { cerr << "GOT IT!" << endl; } else { cerr << "NOPE" << endl; } where input is a std::string with the value described above. Why does it work for KEY1 and not KEY2? Interestingly enough, if I do the following: KEY1 = dd${short_localhost} it doesn't match either. This same expression in Perl works fine though. thanks, -Anibal

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RE: [Boost-Users] boost tokenizer
by Jim.Hyslop 17 Jan '02

17 Jan '02

Peter Dimov [SMTP:pdimov@mmltd.net] wrote: > From: "hicks" <hicks(a)kgk.co.jp> > > Do you know why the compiler places precedence on that interpretation, > > rather than on one giving an instatiation of a local variable? > > The C++ standard says that a function declaration takes precedence. Don't > ask me why. :-) (At the risk of sliding seriously off topic...) I suspect it's something along these lines. Given this function: void f() { int WhatIsThis(); } Is "WhatIsThis" intended to be a declaration of a function, or is it intended to be a definition and default-initialization of an int variable? A C++ compiler cannot know, so the C++Standards committee had several choices: 1) require the compiler to flag the statement as an ambiguous statement 2) require the compiler to interpret the statement as a declaration of a function 3) require the compiler to interpret the statement as a definition of an int If we examine the same syntax in C, there is no question what it is: 'WhatIsThis' is a declaration of a function. That effectively eliminates #3 from consideration because you don't want one statement to have different meanings in C and in C++. I suspect the Committee then either flipped a coin (or some used other democratic means, such as debating and voting on the issue, thumb-wrestling, or playing paper-rock-scissors) to decide between #1 and #2, or choose to adapt the well-worn guideline "When in doubt, do as the ints do" to "When in doubt, do as C does". -- Jim

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boost tokenizer
by hicks 17 Jan '02

17 Jan '02

Dear boost users I am trying to use the boost tokenizer with Borland Builder C++ 5 compiler. This far compiles fine: boost::tokenizer<> tok(std::string(ac0)); All further references to tok such as tok.assign(std::string(ac0)) or tok.begin() result in an error message " Structure requires on the left side of . or .*" Any advice would be welcome. Craig Hicks Engineer, KGK, Tokyo Japan

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Boost Array Question
by Duane Murphy 16 Jan '02

16 Jan '02

Below is a simple example that I cannot get to compile. I would like to create a subclass of boost::array in order to give it some additional functionality (I would like a associative array like interface). When I compile this, I get an "illegal initialization" error for test. I am using Metrowerks Codewarrior 7 on Mac OS X. Is there some special incantation required? I suspect that I am in some kind of specialized area and I cant get there from here. template < class T, std::size_t N > struct test_array : public boost::array< T, N > { }; static boost::array< char,1 > array_test = {{ 'a' }}; static test_array< char, 1 > test = {{ 'a' }}; It appears that if I aggregate instead of inherit that this might work (at least it compiles :-) template < class T, std::size_t N > struct test_array { boost::array< T, N > array_; }; static boost::array< char,1 > array_test = {{ 'a' }}; static test_array< char, 1 > test = {{ 'a' }}; // The funny thing is this works also: static test_array< char, 1 > test2 = { 'a' }; TIA, ...Duane

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tokenizer
by rradh 16 Jan '02

16 Jan '02

Hi, I have string line("a_1 = b_1 ( c_2 )") tokenizer< > tok(line); for (tokenizer<>::iterator beg=tok.begin(); beg!=tok.end();++beg) { cout << *beg << endl; } gives me a 1 b 1 c 2 I want to be able to specify delimiters like in strtok so that I get a_1, b_1 and c_2 but couldn't figure out how to specify the tokenizer function. Any suggestions? Regards Rajesh

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graph: depth first search
by tobi_schuele 15 Jan '02

15 Jan '02

Hi, I'd like to use depth_first_search to check whether a particular vertex is reachable from the root vertex. Is there a way to stop the search when the vertex is found? In other words, can a visitor be used to cut the search tree? Sorry, if this is a newbie question. Thank you very much in advance for your help. Tobias

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[newbie] segmentation fault on running dijkstra example on RedHat 7.2
by Mohammad M. Purbo 15 Jan '02

15 Jan '02

Dear All, I'm new to BOOST. I tried to compile the [BOOST_HOME/libs/graph/example/dijkstra-example.cpp] provided on the distribution with the following comand: gcc -I/home/purbo/include -lstdc++-3-libc6.2-2-2.10.0 -o dijkstra-example dijkstra-example.cpp no error on compiling/linking, but when i ran it, i got: Segmentation fault I used: RedHat 7.2 gcc 2.96 Anybody knows the problem? Thank you in advance, M. Purbo

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A Static Map?
by Duane Murphy 14 Jan '02

14 Jan '02

I have learned a lot about templates and library programming from reading and using the Boost code. Recently I have been finding myself doing something that I would call Static Maps. Basically I would like to use an array of structs as if it were a map or associative array. Does boost have anything like this or can anyone recommend something like that? Here is a simple example: struct entry { const char* key; const char* value; }; const entry entries[] = { { "one", "Hello" }, { "two", "World" }, { "three", "!" } }; { some_type the_map = make_static_map( entries ); const char* word = the_map[ "one" ]; } This is a real poor example, but shows the idea. The struct could be any types that are less-than comparable; maybe there is some special arrangment of key and type. But the idea is there. I would like to be able to lookup items in a static array of items using array notation (other than numerically indexed). For extra credit, the interface would be writeable also; aka a fixed array space map. Any idea? Comments? Suggestions? ..Duane

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Any interest in a weak pointer?
by wayneconrad 14 Jan '02

14 Jan '02

Is there any interest in a weak pointer that plays well with shared_ptr and its friends? Wayne Conrad

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RE: [Boost-Users] Any interest for a parser class?
by Bjorn Karlsson 14 Jan '02

14 Jan '02

> From: Patrick Guio [mailto:patrick.guio@fys.uio.no] > > > Dear all, > I have written a parser class and I wanted to know whether it > could be of > any interest to be included in the boost system. Here is a > short description > of it. > This class is meant to be used in two ways, either to be > included in another > class as an inherited class and/or to be included in the main routine. > [snip] > > This is brief example to show how the class Parser can be used. > it can be used to handle more complex inherited classes. > If it can be of any interest, let me know and I will provide > you with more > details. > > Sincerely, > Patrick > I suggest that you also post this message to the Boost mailing list (http://groups.yahoo.com/group/Boost/) While Boost-Users certainly is a good place to get insightful opinions and reflections, the focus is to handle issues related to using existing Boost libraries. Also, library submissions and reviews are performed by the Boost list, so you'll need to go there sooner or later. Regards, Bjorn [Non-text portions of this message have been removed]

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Any interest for a parser class?
by Patrick Guio 14 Jan '02

14 Jan '02

Dear all, I have written a parser class and I wanted to know whether it could be of any interest to be included in the boost system. Here is a short description of it. This class is meant to be used in two ways, either to be included in another class as an inherited class and/or to be included in the main routine. The first use is for classes containing fields to be initialised with some values. So far it handles intrinsic C++ types and STL vectors of intrinsics. As an example, the class Parser can be used in the class Foo as class Foo : public Parser { Foo::Foo(int nargs, char *args[]); private: enum { var1_enum, ... }; int var1; .... }; The Foo constructor that uses the Parser feature looks like Foo::Foo(nargs, args, ....) : Parser(nargs, args), var1(default_var1), ... { // Register class Parser::RegisterClass("Foo"); Parser::RegisterPackage(package, version, copyright); // Insert options and aliases to parse a value to var1 // the Any constructor is used to register the default value Parser::InsertOption(var1_enum,"var1","var1_type","var1_comment", Any(var1)); // Insert alias to option Parser::InsertOptionAlias(var1_enum, "var1_alias1"); Parser::InsertOptionAlias(var1_enum, "var1_alias2"); .... // Possibility to add a "debug level option" that takes an int argument, // the default value is 0 Parser::ParseLevelDebugOption("debug_level_option_name"); // the member function int Parser::DebugLevel() can be used thereafter to // check the this value if (Parser::DebugLevel() > 50) cout << "Debug level is " << Parser::DebugLevel() << endl; } Then a member function Foo::ParseParameters() method could look like void Foo::ParseParameters() { // The ParseOption family member functions return a boolean indicated // whether the var1 has been parsed if (Parser::ParseOption(var1_enum,var1)) cout << "var1 = " << var1 << " parsed." << endl; // Other ParseOption member functions are // * Parser::ParseOption(var1_enum,var1,"filename") // parse the filename "filename" instead of the command line // * Parser::ParseOptioninFileonCmdLine(var1_enum,var1) // if the option -i/--input[=]paramter_file is on the command line then // parse first the parameter_file, thereafter the command line. // * Parser::ParseOptiononCmdLineinFile(var1_enum,var1) // if the option -i/--input[=]paramter_file is on the command line then // parse first the command line, thereafter the parameter_file // * Parser::ParseHelp() // if the option -h/--help is parsed, print to standard output a message // with class_name information and a list of all the registered/inserted // options for that class in the predefined format : // option_name[,option_aliases] option_type option_comment // and return a true boolean // * Parser::ParseVersion() // if the option -v/--version is parsed, print to standard output a // message containing information package, version, copyright for the class // * Parser::ParseTemplate() // if the option --create-template is parsed, print to standard output a // message with class_name information and a list of all the // registered/inserted options for that class in a format to be used // later with the -i/--input containing information about variable and // aliases, type of the variable, comment/description and default value } The second way of using is from the main routine and is very similar to the first way int main(int nargs, char *args[]) { try { Parser parser(nargs, args); parser.RegisterProgram(args[0]); parser.RegisterPackage(package, version, copyright); Foo foo(nargs, args); // Insert options if necessary ... // Parse defaults if (parser.ParseHelp()) { foo.ParseHelp(); return EXIT_SUCCESS; } if (parser.ParseVersion()) { foo.ParseVersion(); return EXIT_SUCCESS; } if (parser.ParseTemplate()) { foo.ParseTemplate(); return EXIT_SUCCESS; } // Parse option for program if necessary ... // Parse class option foo.ParseParameters(); ... return EXIT_SUCCESS; } catch(ParseException &x) { cerr << x.what() << endl; return EXIT_FAILURE; } } The try/catch is used to handle potential errors at parsing and uses a class ParseException. This is brief example to show how the class Parser can be used. it can be used to handle more complex inherited classes. If it can be of any interest, let me know and I will provide you with more details. Sincerely, Patrick ====================================================================== Patrick Guio Institute of Physics, University of Oslo P.O. box 1048, Blindern, N-0316 Oslo Tel : (+47) 22 84 40 60 - Fax : (+47) 22 85 56 71 E-mail : patrick.guio(a)fys.uio.no URL : http://folk.uio.no/~patricg

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iterator_adaptors Comment
by Duane Murphy 14 Jan '02

14 Jan '02

There is a comment in iterator_adaptors: public: // implementation details (too many compilers have trouble when these are private). Policies& policies() { return m_iter_p.second(); } const Policies& policies() const { return m_iter_p.second(); } Base& iter() { return m_iter_p.first(); } const Base& iter() const { return m_iter_p.first(); } This seems to imply that iter() and policies() ought to be private. I would like to suggest that having access to the underlying iterator is valuable. This is especially true of transform and projection iterators which allow you to locate a record by searching on a field. Access to the underlying iterator gets access to the rest of the record. Is there some other way of accomplishing the same thing without using iter()? Thanks, ...Duane

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iterator_adaptor const iterator question
by Duane Murphy 14 Jan '02

14 Jan '02

I have now built a couple of iterators using boost::iterator_adaptor. These are not adapted iterators but rather iterators developed to iterate over interfaces that have not iterators. I havent found a good example of how to declare the equivalent of a const_iterator like in vector. What would the declartion look like? If the definition of an iterator is: typedef boost::iterator_adaptor< Base, Policy > iterator; What would the declartion for a const_iterator look like? Thanks for the help. ..Duane

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[newbie]compiling 'regex_split example: split a string into tokens' failed
by pr275116 11 Jan '02

11 Jan '02

Hello, compiling the 'regex_split example: split a string into tokens' failed with an 'undefined symbols' message (see below). I am using Project Builder 1.1.1 the following compiler: Apple Computer, Inc. version gcc-934.3, based on gcc version 2.95.2 19991024 (release) on MacOSX 10.1.2 (Unix BSD 4.4). Any help would be much appreciated. Philippe de Rochambeau /usr/bin/jam -d1 JAMBASE=/Developer/Makefiles/pbx_jamfiles/ProjectBuilderJam base JAMFILE=- build ACTION=build TARGETNAME=Boost2 NATIVE_ARCH=ppc BUILD_STYLE=Development CPP_HEADERMAP_FILE=/Users/philippe/Documents/Projets_ ProjectBuilder/Boost2/build/intermediates/Boost2.build/Header maps/Boost2.hmap DSTROOT=/ OBJROOT=/Users/philippe/Documents/Projets_ProjectBuilder/B oost2/build/intermediates SRCROOT=/Users/philippe/Documents/Projets_ProjectBuilder/ Boost2 SYMROOT=/Users/philippe/Documents/Projets_ProjectBuilder/ Boost2/build ...updating 9 target(s)... BuildPhase Boost2 Completed phase <CopyHeaders> for Boost2 CompileCplusplus /Users/philippe/Documents/Projets_ProjectBuilder/Boost2/build/ intermediates/Boost2.build/Objects/ppc/main.o BuildPhase Boost2 Completed phase <DeriveAndCompileSources> for Boost2 MasterObjectFile.Combine /Users/philippe/Documents/Projets_ProjectBuilder/Boost2/build/ intermediates/Boost2.build/master.o StandaloneExecutable /Users/philippe/Documents/Projets_ProjectBuilder/Boost2/build/ Boost2 /usr/bin/ld: warning prebinding disabled because of undefined symbols /usr/bin/ld: Undefined symbols: __._Q25boost11bad_pattern __._Q25boost14bad_expression __Q35boost9re_detail13c_traits_base.class_map __Q35boost9re_detail13c_traits_base.lower_case_map __Q35boost9re_detail13c_traits_base.syntax_map ___Q25boost14bad_expressionRCt12basic_string3ZcZt18strin g_char_traits1ZcZt24__default_alloc_template2b0i0 ___Q25boost7regbase ___vt_Q25boost11bad_pattern ___vt_Q25boost14bad_expression _do_lookup_class__Q35boost9re_detail13c_traits_basePCc _do_lookup_collate__Q35boost9re_detail13c_traits_baseRt12 basic_string3ZcZt18string_char_traits1ZcZt24__default_alloc_t emplate2b0i0PCc _error_string__Q35boost9re_detail13c_traits_baseUi _init__Q25boostt14c_regex_traits1Zc _m_free__Q25boostt14c_regex_traits1Zc _toi__Q25boostt14c_regex_traits1ZcRPCcPCci _toi__Q25boostt14c_regex_traits1Zcc _transform__Q25boostt14c_regex_traits1ZcRt12basic_string3Z cZt18string_char_traits1ZcZt24__default_alloc_template2b0i0R CB1 _transform_primary__Q25boostt14c_regex_traits1ZcRt12basic _string3ZcZt18string_char_traits1ZcZt24__default_alloc_templa te2b0i0RCB1 _update__Q25boostt14c_regex_traits1Zc /usr/bin/cc -o "/Users/philippe/Documents/Projets_ProjectBuilder/Boost2/buil d/Boost2" "-L/Users/philippe/Documents/Projets_ProjectBuilder/Boost2/bu ild" "-F/Users/philippe/Documents/Projets_ProjectBuilder/Boost2/bu ild" -filelist "/Users/philippe/Documents/Projets_ProjectBuilder/Boost2/buil d/intermediates/Boost2.build/Objects/LinkFileList" "-arch" "ppc" "-prebind" "-lstdc++" ...failed StandaloneExecutable.LinkUsingFileList /Users/philippe/Documents/Projets_ProjectBuilder/Boost2/build/Boost2 ...

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tuple I/O trouble
by s1imshady86 11 Jan '02

11 Jan '02

When my test program gets to the cout << a; line i get a external error. As far as i can tell the library is setup right. I had no problem using tuples in other programs but cant seem to print them. The documentation doesn't list this feature as broken on my compiler or any compiler for that matter. Im using MSVSC++ btw. #include <iostream> #include <boost/tuple/tuple_io.hpp> using namespace std; using namespace boost; int main () { tuple<int,int> a (23,42); cout << a; return 0; } heres the error verbatim: --------------------Configuration: Tuple - Win32 Debug---------------- ---- Compiling... Test.cpp Linking... Test.obj : error LNK2001: unresolved external symbol "private: static int const * const boost::tuples::detail::format_info::stream_index" (?stream_index@format_info@detail@tuples@boost@@0QBHB) Debug/Tuple.exe : fatal error LNK1120: 1 unresolved externals Error executing link.exe. Creating browse info file... Tuple.exe - 2 error(s), 0 warning(s)

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Using boost::thread under Visual C++
by cadenzajon 10 Jan '02

10 Jan '02

Hi all, I'm starting to use boost for the first time now, but I'm having problems linking to the thread library (libboost_thread.lib) from within Visual C++. Using my main compiler, VC++ 6.0, I get the following linker error: libboost_thread.lib(exceptions.obj) : error LNK2001: unresolved external symbol "__declspec(dllimport) public: __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::basic_string<char,struct std::char_traits<ch ar>,class std::allocator<char> >(char const *)" I checked the compiler compatibility tables online at the boost site, but they're not recent enough to include any details on the thread library. When I use Visual C++ .NET (feel free to shrink away in horror) to test it, I get about 8 linker errors complaining that a handful of standard library functions (most dealing with the basic_string and exception classes) are being redefined by libboost_thread.lib. Does anybody have any experience with this or ideas on what I could be doing wrong? I'm just starting to do multi-platform software design, and boost::thread would be a godsend! Thanks, Jonathan

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MacOSX
by pr275116 10 Jan '02

10 Jan '02

Hello, I am currently trying to build Boost on MacOSX 10.1.2. I 'made' Jam for MacOSX then typed jam -sBOOST_ROOT=. -sTOOLS="gcc" to build Boost. As a result, I got many failures: ..... g++ -c -Wall -ftemplate-depth-100 -DNDEBUG -DBOOST_RE_BUILD_DLL=1 -O4 -finline-functions -Wno-inline -fPIC -I"libs/regex/build" -I"." -o "libs/regex/build/bin/libboost_regex.so/gcc/release/runtime-link- dynamic/shared-linkable-true/w32_regex_traits.o" "libs/regex/build/../src/w32_regex_traits.cpp" ...failed gcc-C++-action libs/regex/build/bin/libboost_regex.so/gcc/release/runtime-link- dynamic/shared-linkable-true/w32_regex_traits.o ... gcc-C++-action libs/regex/build/bin/libboost_regex.so/gcc/release/runtime-link- dynamic/shared-linkable-true/wide_posix_api.o zsh: command not found: g++ g++ -c -Wall -ftemplate-depth-100 -DNDEBUG -DBOOST_RE_BUILD_DLL=1 -O4 -finline-functions -Wno-inline -fPIC -I"libs/regex/build" -I"." -o "libs/regex/build/bin/libboost_regex.so/gcc/release/runtime-link- dynamic/shared-linkable-true/wide_posix_api.o" "libs/regex/build/../src/wide_posix_api.cpp" ...failed gcc-C++-action libs/regex/build/bin/libboost_regex.so/gcc/release/runtime-link- dynamic/shared-linkable-true/wide_posix_api.o ... ...skipped <libs!regex!build/libboost_regex.so/gcc/release/runtime-link- dynamic/shared-linkable-true>libboost_regex.so for lack of <libs!regex!build/libboost_regex.so/gcc/release/runtime-link- dynamic/shared-linkable-true>c_regex_traits.o... ...failed updating 78 targets... ...skipped 8 targets... Has anyone in this group managed to build Boost on MacOS 10.1.2? If so, what configuration did you use? Could you please send me your ProjectBuilder project file? Many thanks. Philippe de Rochambeau

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RE: [Boost-Users] New poll for Boost-Users
by Bjorn Karlsson 10 Jan '02

10 Jan '02

> From: Ken Hagan [mailto:k.hagan@thermoteknix.co.uk] > > Well I tried but I got an error message saying "Oops. You are > not a moderator." Is Yahoo based in Florida, or Zimbabwe? > We (the confused moderators) made a mistake - sorry about that. The moderating force is currently discussing the question of membership visibility, and the poll is, at least for now, off. Suggestions and comments can (of course) be sent to the moderators or to the list. Bjorn [Non-text portions of this message have been removed]

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New poll for Boost-Users
by Boost-Users＠yahoogroups.com 10 Jan '02

10 Jan '02

Enter your vote today! A new poll has been created for the Boost-Users group: Yahoo! groups can be configured so that only the moderators can view membership list, or so that membership lists can be viewed by anyone (email addresses are always munged for non-moderators; my email address would appear as something like jim.hyslop@.le...) Do you want the membership list to be freely available to be viewed by anyone, or do you want the membership list kept private so only the moderators can view the list? o I want only the moderators to be able to view the membership list o I want anyone to be able to view the membership list To vote, please visit the following web page: http://groups.yahoo.com/group/Boost-Users/polls Note: Please do not reply to this message. Poll votes are not collected via email. To vote, you must go to the Yahoo! Groups web site listed above. Thanks!

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RE: [Boost-Users] Viewing membership (was: boost::pool + shared m emory)
by Jim.Hyslop 08 Jan '02

08 Jan '02

Chris Little [SMTP:clittle@renlearn.ca] wrote: > Jim, > > Polls are limited to Moderators in this group. i.e. only moderators can > respond to the poll. Doh! I never even thought to check that. Jon, can we lighten that restriction slightly, to "limited" (Moderators can create polls, members can vote)? -- Jim

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RE: [Boost-Users] Viewing membership (was: boost::pool + shared m emory)
by Chris Little 08 Jan '02

08 Jan '02

Jim, Polls are limited to Moderators in this group. i.e. only moderators can respond to the poll. Chris > -----Original Message----- > From: Jim.Hyslop [mailto:jim.hyslop@leitch.com] > Sent: Tuesday, January 08, 2002 10:17 AM > To: 'Boost-Users(a)yahoogroups.com' > Subject: RE: [Boost-Users] Viewing membership (was: > boost::pool + shared m emory) > > > Tom Matelich [SMTP:tmatelich@zetec.com] wrote: > > PS Why can't I see who is a member of this group? I > wanted to check > > to > see > > if Steve Cleary was a member. Sorry if you are Steve. > Because that's the way the group was set up. Only moderators > can view the membership list. > > It can be changed easily enough, if people want it changed. > Hey, here's a great opportunity to take advantage of Yahoo! > Group's poll feature. > > -- > Jim [Non-text portions of this message have been removed]

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RE: [Boost-Users] Viewing membership (was: boost::pool + shared m emory)
by Jim.Hyslop 08 Jan '02

08 Jan '02

Tom Matelich [SMTP:tmatelich@zetec.com] wrote: > PS Why can't I see who is a member of this group? I wanted to check to see > if Steve Cleary was a member. Sorry if you are Steve. Because that's the way the group was set up. Only moderators can view the membership list. It can be changed easily enough, if people want it changed. Hey, here's a great opportunity to take advantage of Yahoo! Group's poll feature. -- Jim

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boost::pool + shared memory
by Tom Matelich 07 Jan '02

07 Jan '02

I need to build a system for having miscellaneous objects in a shared memory segment. Essentially, we need a few inter-process singletons. These classes have STL containers, so I was looking at using pool_allocator and writing a UserAllocator to use ACE_Mem_Map ( http://doc.ece.uci.edu/Doxygen/Current/html/ace/classACE__Mem__Map.html#_det ails ) or something. I just wanted to see if anyone had done anything resembling this and could give me any pointers or tips. Thanks, Tom Matelich PS Why can't I see who is a member of this group? I wanted to check to see if Steve Cleary was a member. Sorry if you are Steve.

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overflow of clock_t with clock(), timing longer processes
by gigu74 07 Jan '02

07 Jan '02

hello hackers first a hi to everyone. just signed today as a new member to this mailinglist. well.. i've got a problem and hope someone can help me. i run a c++ program (mostly on a sunblade 100 or a sunblade 1000) about genetic algorithms which takes quite some time to solve for certain problems (up to 100 hours) because its important to me to compare different jobs i need to measure the elapsed cpu time used for the particular jobs. well, i could use the standart system time, but because my running job is not always the only one i dont get really worthy results. so i used the std::clock(). but measuring 1/1000000 of a seconds with that and with the clock_t beeing a long int of course this results in a overflow after around 36 minutes. thought to find something about that in the boost library but timer.hpp just gets also de maximum elapsed time out.. doesnt really help is there some way this can be achieved? would be really neat to get an answer from anyone soon. thanks uf

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bind question
by Duane Murphy 05 Jan '02

05 Jan '02

Is there a syntax for making boost::bind bind to functions that are templates? Here is an (extremally simplified) example that doesnt compile: #include <boost/bind.hpp> template < class Function > void f( Function func ) { func( 46 ); } void g( int num ) { num++; } int main( void ) { boost::bind( f, g )(); boost::bind( f, _1 )( g ); return 0; } The two bind lines in main both get an error "call of non-function". Is there a way to make this work? ..Duane p.s. CodeWarrior 7 on a Macintosh (OS X)

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