Hi all, I have a C++ library, which is used in both Linux and Windows. I want to enable the user to control the debug level (0 - no debug, 1 - only critical errors ... 5 - informative debug information). The debug log is printed to a text file. In Windows, I can do it using a registry value (DWORD DebugLevel). What can be a good repl...
This is a bit unclear to me... So, i if i have a function: char *test(int ran){ char *ret = new char[ran]; // process... return ret; } and then call it multiple times: for(int i = 0; i < 100000000; i++){ char *str = test(rand()%10000000+10000000); // process... // delete[] str; // do i have to delete it here? } ...
Is this a macro defintion for a class or what exactly is it? #define EXCEPTIONCLASS_IMPLEMENTATION(name, base, string) : public base \ { \ public: \ name() : base(string) {} ...
I want to send my Array class using boost Mpi template<class T> class Array { private: int size; T* data; public: // constructors + other stuff }; Here T can be any built in type or user defined type. Suppose I have a class complex struct complex { std::vector<double> real_imag; // contain two elements }; So the question i...
Hello I've two classes (Negotiator, Client), both has their own boost::asio::ip::tcp::socket. Is there a way to transfer socket object to Client after negotiation is finished. I'm looking forward to do something like that: boost::asio::ip::tcp::socket sock1(io); //... boost::asio::ip::tcp::socket sock2; sock2.assign(sock1); This...
I'm trying to find a way to detect when focus is changed to another window (without having to poll every X ms). I've already figured out a way to detect when focus is switched between applications using WH_SHELL and HSHELL_ACTIVATESHELLWINDOW. The problem is I want to detect when focus is switched between dialog/windows within the same...
Okay the previous question was answered clearly, but i found out another problem. What if i do: char *test(int ran){ char *ret = new char[ran]; // process... return ret; } And then run it: for(int i = 0; i < 100000000; i++){ string str = test(rand()%10000000+10000000); // process... // no need to delete...
Anyone here with experience of the language D? I was just reading through its presentation at http://www.d-programming-language.org/ and at Wikipedia and it seems like a good (better) alternative to C++. With good/better I mean that it seem simpler yet it has all the good stuff within C/C++. But without some of the difficulties that m...
The thing is I have to run the OpenCl examples, as given here:http://labs.trolltech.com/blogs/2010/04/07/using-opencl-with-qt/. The problem is that I have no clue where to start. I downloaded the source for QtOpenCl but it needs a valid OpenCl installation. I have Qt installed already. How do I install OpenCl? I don't have a GPU at hom...
Can anyone point me to some documentation on how to write scripts in Python (or Perl or any other Linux friendly script language) that generate C++ code from XML or py files from the command line. I'd like to be able to write up some xml files and then run a shell command that reads these files and generates .h files with fully inlined ...
I need to write a Util function (in my c++cli app) that converts a String to a Double or Float or Int. template<typename T> static T MyConvert(String^ str) { return static_cast<T>(System::Convert::ToDouble(str)); } Is this safe? Can it somehow convert 2 to 1.999 and then to 1 if I call MyConvert<int>("2") ? I was wondering why th...
Hi everyone, I'm working on a C++ cross-platform OpenGL application (Windows, Linux and MacOS) and I am wondering if some of you could share some advices on porting a large application to OpenGL 3. The reason I am looking into OpenGL 3 is because I think we could benefit a lot from using the new "Sync objects". Nvidia has supported such...
How to set QWidget width? I know setGeometry(QRect& rect) function to do that, but in that case I should use geometry() function to get former parameters of my QWidget, then I should increment the width and use setGeometry(..). Is there any ditect way to say QWidget aa; aa.setWidth(165); //something like this? ...
Hi, I need to store large number of integers. There can be duplicates in the input stream of integers, I just need to store distinct amongst them. I was using stl set initially but It went OutOfMem when input number of integers went too high. I am looking for some C++ container library which would allow me to store numbers with the said...
I downloaded a zipped archive from Apple that consists of a C++ header file and source. Included in this was a help file. For some reason this help file opens but I cannot read the content. Is there any other documentation outside of a help file for this? For c++ or c#? ...
I have a Win32 C++ Application using a handful of third-Party DLLs that is installed at some hundred costumer machines. I recently tested the x86 Version of the installation successfully on Windows XP, Windows Vista x64, Windows 7 x86 as well as Windows Server 2008 x86. No Problems. The Installer (nullsoft) installs the redistributable f...
What is the C equivalent of C++ delete[] (char *) foo->bar; Edit: I'm converting some C++ code to ANSI C. And it had: typedef struct keyvalue { char *key; void *value; struct keyvalue *next; } keyvalue_rec; // ... for ( ptr = this->_properties->next, last = this->_properties; ptr!=NULL; last = ptr, ptr = ptr->ne...
I have an input stream from a binary file. I want to create a bitset for the first 5 bits of the stream. Here is the code I have so far: ifstream is; is.open ("bin_file.out", ios::binary ); bitset<5> first_five_bits; is >> first_five_bits; // always is set to default 00000 ...
Is this considered good programming practice in C++: try { // some code } catch(someException) { // do something } catch (...) { // left empty <-- Good Practice??? } ...
As a part of maintaining large piece of legacy code, we need to change part of the design mainly to make it more testable (unit testing). One of the issues we need to resolve is the existing interface between components. The interface between two components is a class that contains static methods only. Simplified example: class ABInte...