See below a main() and two very simple classes. Then per Boost serialization (and what is shown) my questions are: 1) Does class B need the normal overloaded stream insertion operators '<<' and '>>' to be defined? Currently in my real code it doesn't have these. 2) Does class A in the store() and load() methods need to iterate thro...
I'm trying to port some Windows code to Linux, ideally through platform-independent libraries (eg boost), however I'm not sure how to port this bit of event code. The bit of code involves two threads (lets call them A and B). A wants to do something that only B can, so it sends B a message, then waits for B to say its done. In windows t...
I need to get an st-MinCut of a graph. I recently started using the C++ Boost libraries, which don't seem to have that st-MinCut functionality, but the do have MaxFlow implementations and I can (in theory) make use of the MaxFlow/MinCut duality. I have gotten the "push relabel max flow" function working properly, but I can't figure out ...
I'm looking for a C++ container that's a cross between boost::array, boost::scoped_array and std::vector. I want an array that's dynamically allocated via new[] (no custom allocators), contained in a type that has a meaningful copy-constructor. boost::array is fixed-size, and although I don't need to resize anything, I don't know the s...
Hi, short example: #include <boost/typeof/typeof.hpp> #include <boost/proto/core.hpp> using namespace boost; template<class T, class U> BOOST_TYPEOF_TPL(T() + U()) add2(const T& t, const U& u) { return t + u; }; int main(){ typedef BOOST_TYPEOF(add2(2.5, 1.5)) type; // get type -> works BOOST_STATIC_ASSERT((is_same...
I need to execute a program and retrieve its stdout output in c++. I'd like my code to be cross-platform too. Having recently discovered the wonderful world of the Boost c++ libraries for all your cross platform needs, I figured I'd just go to boost.org and read up on the documentation of Boost.Process. Much to my surprise, it wasn't th...
I have to store lot of strings in c++ map to keep unique strings and when ever duplicate string occurs I just need to increment the counter (pair.second). I've used c++ map and it well fits to this situation. Since the file that processing is gone now upto 30gig I am trying to keep this in a file instead of memory. I also came across ...
I've got a struct with some members that I want to be able to get and set from a string. Given that C++ doesn't have any introspection I figure I need some creative solution with macros, the stringize operator and maybe boost::bind. I don't need full serialization or introspection, more an 'introspection-lite' I'd like to have somethin...
hi, I want to use the boost threadpool library from open source(http://threadpool.sourceforge.net/) I am getting an complilation error with the example program itself. /usr/include/boost/./threadpool/./detail/locking_ptr.hpp: In constructor âboost::threadpool::detail::locking_ptr::locking_ptr(volatile T&, const volatile Mutex&) [with ...
Hi, I have a problem getting boost::multi_index_container work with random-access and with orderd_unique at the same time. (I'm sorry for the lengthly question, but I think I should use an example..) Here an example: Suppose I want to produce N objects in a factory and for each object I have a demand to fulfill (this demand is known at...
Hi, as I've just learned in in my other question, I could use a composite_key for a struct, which has a std::vector and an integer. Now my question is: Can I use this somehow to work with hashed_indecies? Here an example similar to THIS: struct unique_property { //the pair of int and std::vector<int> shall be unique int my_int; ...
Hello All, I can't seem to build boost::python correctly on my Windows 7 64Bit machine. It's vanilla 32bit python 2.6.4 in the c:\Python26 directory. Pastebin is here of the debug build output : http://pastebin.com/m7d70f13e Cheers, Al ...
I'm struggling with two errors with Boost.Asio. The first occurs when I try to receive data on a socket: char reply[1024]; boost::system::error_code error; size_t reply_length = s.receive(boost::asio::buffer(reply, 1024), 0, error); if (error) cout << error.message() << endl; //outputs "End of file" The second occurs when I try to cr...
Is boost::make_shared obsolete now? Haven't found its definition in 1.35. ...
I have a worker class like the one below: class Worker{ public: int Do(){ int ret = 100; // do stuff return ret; } } It's intended to be executed with boost::thread and boost::bind, like: Worker worker; boost::function<int()> th_func = boost::bind(&Worker::Do, &worker); boost::thread th(th_func); th.join(); My quest...
When I work with BOOST_FOREACH, there isn't a problem with simple templates as vector. But when I try to iterate through map > for example I need to typedef the element type. Is there any workaround? ...
I need to wrap a dynamically allocated array(from a = new double[100] for example) into std::vector(preferably) without copying the array. This restriction is imposed by that the array I want to wrap is mmaped from a file, so just doing vector(a, a+size) will double the memory usage. Is any tricks to do that? ...
Hi, I have created some C++ classes to model a Solitaire game as a learning exercise. I have classes for the SolitaireGame, a CardStack (one of the 10 piles of cards on the board ) and a Card. My current model states that the SolitaireGame owns a vector of 104 Card objects - which I call the 'shoe'. The SolitaireGame also keeps track ...
class A { bool OutofRange(string& a, string& b, string c); void Get(vector <string>& str, string& a, string& b); } void A::Get(vector <string>& str, string& a, string& b) { str.erase( std::remove_if (str.begin(), str.end(), BOOST_BIND(&A::OutOfRange, a, b, _1)), str.end() ); } I am getting ...
What is the standard way to get an exit code from a boost::thread ? The docs don't seem to touch on this subject at all. ...