Hi guys, Still fighting with templates. In this example, despite the fact that is copied straight from a book I'm getting the following error message: Error 2 error C2784: 'IsClassT<T>::One IsClassT<T>::test(int C::* )' : could not deduce template argument for 'int C::* ' from 'int'. This is an example from a book Templates - The Comple...
Hello, I was wondering if there is a library for editing program flow. I refer to conditions if, loops (do, while, for) and other elements that can exist inside a program. What I would like to have is some sort of a CAD application (similar to an UML editor) from where I can take some elements and edit their properties, make connection...
Hi, I've a basic template class, but I'd like to restrain the type of the specialisation to a set of classes or types. e.g.: template <typename T> class MyClass { .../... private: T* _p; }; MyClass<std::string> a; // OK MYCLass<short> b; // OK MyClass<double> c; // not OK Those are just examples, the allowed types may...
I want to load an XML document in Xerces-C++ (version 2.8, under Linux), and validate it using a DTD schema not referenced from the document. I tried the following: XercesDOMParser parser; parser.loadGrammar("grammar.dtd", Grammar::DTDGrammarType); parser.setValidationScheme(XercesDOMParser::Val_Always); parser.parse("xmlfile.xml"); B...
Hi, I'm trying to use MapViewOfFile in a 64 bit process on a file that is already mapped to memory of another 32 bit process. It fails and gives me an "access denied" error. Is this a known Windows limitation or am I doing something wrong? Same code works fine with 2 32bit processes. The code sort of looks like this: hMapFile = Open...
I was wondering about the last constructor for std::string mentioned here. It says: template<class InputIterator> string (InputIterator begin, InputIterator end); If InputIterator is an integral type, behaves as the sixth constructor version (the one right above this) by typecasting begin and end to call it: string(static_cast<size_t...
Hi, I know why I want to use private virtual functions, but how exactly can I implement them? For example: class Base{ [...] private: virtual void func() = 0; [...] }; class Derived1: public Base{ void func() { //short implementation is ok here } }; class Derived2: public Base{ void func(); //long implementation elsewhere ...
Microsoft recently released tools and documentation for its new Phone 7 platform, which to the dismay of those who have a big C++ codebase (like me) doesn't support native development anymore. Although I've found speculation about this decision being reversed, I doubt it. So I was thinking how viable would be to make this codebase availa...
I want to list properties and functions present in c++ classes. Is that functionality already implemented in any library ? Does visual studio intellisense use any library ? Is that library available publicly from Microsoft? ...
I am pretty sure these classes are not thread safe. But, is it safe to use different objects from these classes in different threads? Do they have any global dependencies with each other like static data or anything to watch out for? ...
Hey! Just got today these ones: http://www.pearl.de/a-PE5858-1413.shtml I want to start programming with these, but I can't find anything usable. I'm using Ubuntu Jaunty 9.04. The Problem is that I couldn't find much samples and modules etc. for my modell. ...
Solution found - in under 5 minutes, thanks folks! Clarification: The contents of my array are the values 0-29. So array[0][0] = 0, while array[29][0] = 29 --- they're just test values. Also, I have a potential solution that's been posted multiple times, going to try that. Recursive Solution: Not working! Explanation: An integer, ti...
I just right now "migrated" from C# to C++/CLR. First I was annoyed, that I had to write all class' declarations twice (into .h and .cpp). Then I figured out, that I could place the code also into the h-files - it compiles at least. Well, I deleted all cpp's of my classes and now I realized, VS won't give me any Intellisense when I work ...
I have the code below in my test code in many places: // // Make a function call while expecting an exception should be thrown // bool exceptionThrown = false; try { expectNotEqual(someData, anotherData, methodName); } catch(std::logic_error&) { exceptionThrown = true; } if(!exceptionThrown) throw std::...
I am getting segmentation fault in this code but i cant figure out why. I know a segmentation fault happens when a pointer is NULL, or when it points to a random memory address. q = p; while(q -> link != NULL){ q = q -> link; } t = new data; t -> city = cityName; t -> latitude = lat;...
Hello guys, I'm working with protobuf and Linux. Where is it's compiler protoc. I've downloaded package from main site, compiled and installed it successfully but I can't find protoc to build my own format file. Where is it? UPD Here is folder where I build protobuf: aclocal.m4 depcomp Makefile.in autogen....
class Foo { public: Foo() { Foo(1)} Foo(int x, int y = 0):i(x) {} private: int i; } Can anybody give me some reasonas about can I do this? If not why? ...
Hi, I noticed that you can't throw an exception in a destructor. So my question is what should I do if destructor fails. Another question is, under what situation a destructor might fail? Thanks so much ...
Hi, I'm writing a wxWidgets GUI application, but it also uses some console objects. I need a way of displaying stdout and accessing stdin; the best way to do this, would be displaying the console as well as the GUI. This can be done if a user runs the program from the command prompt/shell etc, but the command prompt does not automatica...
I just wrote some code to test the behavior of std::equal, and came away surprised: int main() { try { std::list<int> lst1; std::list<int> lst2; if(!std::equal(lst1.begin(), lst1.end(), lst2.begin())) throw std::logic_error("Error: 2 empty lists should always be equal"); lst2.push_back(5); if(std::equal(...