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Advance usage of mutil index,need help.
by 张大千 23 Jun '12

23 Jun '12

this is the story: suppose you have some files(files1,files2,files3) and some usergroup(ug1,ug2,ug3). and this is the struct file{ string name; set<string> group; } and file1.name = "file1"; file1.group.insert("ug1"); file1.group.insert("ug2"); file1.group.insert("ug3"); file2.name = "file2"; file2.group.insert("ug2"); file3.name = "file3"; file3.group.insert("ug3"); and i need search by file name or group, and file name should can be support fuzzy search (eg. *ile , *1 ...… [View More]

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[serialization] mingw linker problems
by Ken 23 Jun '12

23 Jun '12

Hi, We have an application comprised of many shared libraries. It is built on Windows using mingw (gcc 4.4) and on Mac OS X using gcc under the Qt 4.7.0 framework. The application has been based on boost 1_41. We are now attempting to port to boost 1_49. We use boost.serialization and other boost libraries as dlls. On Mac OS X the upgrade was mostly trouble free, but with mingw we have encountered problems with all of our libraries that use boost.serialization. Basically, the inclusion … [View More]

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[phoenix] passing values
by Karsten Ahnert 23 Jun '12

23 Jun '12

Hi, I figured out that argument deduction in phoenix only works with references, so the following will not compile: std::cout << arg1( 1.0 ) << std::endl; Are there any alternatives to use use phoenix directly with values?

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[mpl] Documentation suggestion
by Jeremiah Willcock 22 Jun '12

22 Jun '12

I have noticed that several MPL algorithms do not work when applied to views unless an output iterator (inserter) is passed in explicitly. The error messages when you hit one of those cases are very non-obvious, however. It might be nice to have something in the documentation that talks about this issue and the workarounds for it. Here is an example of something that breaks: #include <boost/mpl/vector_c.hpp> #include <boost/mpl/joint_view.hpp> #include <boost/mpl/sort.… [View More]

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Arguments types for object created with boost::bind()
by niXman 21 Jun '12

21 Jun '12

Hello! I need to get the types list for operator() for result type of boost::bind() Example: void func(int, long) {} auto o = boost::bind(&func, _1, _2); o( ??? ); // what types of arguments? Thanks. -- Regards, niXman ___________________________________________________ Dual-target(32 & 64 bit) MinGW compilers for 32 and 64 bit Windows: http://sourceforge.net/projects/mingwbuilds/

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boost.log on Windows with MingGW
by Konstantin Ribel 21 Jun '12

21 Jun '12

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[range] indirected requirements for custom smart pointer
by Jeff Flinn 21 Jun '12

21 Jun '12

Using boost::adaptors::indirected with a custom templated smart pointer failed compilation due to missing MyCustomSmartPointer::element_type typedef. Indeed supplying this typedef, all compiles and tests run. Is this the canonical approach to making a compatible pointer type usable with range? Is this specific to range only? Will this make my custom smart pointer 'more' compatible with other boost/std facilities? Thanks, Jeff

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Re: [Boost-users] Boost Program Options: Any way to have variable number of "objects" each with parameters?
by Charles Mills 21 Jun '12

21 Jun '12

Here is what I have come up with. Any feedback? I first thought of something like this: CircleRadiuses= 4 7 3 . It's okay for objects with only one value (like Circles) but clumsy and unintuitive for objects with more than one parameter like RectangleHeights= 5 3 7 . RectangleWidths= 10 4 16 . Although I would like to support "any number" of objects, the reality is that a likely number is three or four, so restricting it to a maximum of nine should not be a problem. So here … [View More]

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Using Boost ICL for range matching
by Rajalakshmi Iyer 21 Jun '12

21 Jun '12

Hello, I want to know if I can use the boost::icl::interval_set to store a set of integer based intervals like: [100, 200], [50, 600] etc and then find out whether a number like 150 matches any of these intervals? I would greatly appreciate if someone can point me to an example for this kind of operation. Thanks, Raj -- Twitter: @Blismedia <http://twitter.com/#%21/blismobile> BlisMedia 32 Percy Street, London W1T 2DE www.blismedia.com <http://www.blismobile.com/> <http://… [View More]

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Re: [Boost-users] the problem about boost trim function in multi-thread
by Hu Jing 21 Jun '12

21 Jun '12

>>That should be really easy to test. >>How does your test code perform if you change it to this: >> >>void *TrimNString(void *arg) { >> >> string base ="fdsffdsafdsa"; >> locale loc = locale(); >> for(int i = 0; i != 50000000;i++) >> { >> string str = base; >> trim(str, loc); >> } >> return 0; >> } >> Note also that trim calls the locale to look for whitespace, which is more … [View More]

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