I have a loop for(aI = antiviral_data.begin(); aI != antiviral_data.end();) { for(vI = viral_data.begin(); vI != viral_data.end();) { if((*aI)->x == (*vI)->x && (*aI)->y == (*vI)->y) { vI = viral_data.erase(vI); aI = antiviral_data.erase(aI); } else { vI++; aI++; } } } But when ever antiviral_data contains a...
I'm trying to get eclipse to work with MinGW. I've done the following: Downloaded CDT for eclipse. Installed MinGW. Added C:\MinGW\bin to my path. Opening a command prompt (CMD) and typing g++ or alike works fine. I run eclipse, create a "New C++ Project", and only get the option saying "other toolchains". There's a MILLION tutorials...
Why is it better to use '!=" than '<' in a vector loop? I just can't see the difference. ...
How would I load certain images into an array set like Map = ( ( 1, 1, 1 ), ( 2, 2, 2 ), ( 3, 3, 3 ) ) I can put images into variables like so one = oslLoadImageFile("one.png", OSL_IN_RAM, OSL_PF_5551); so whould I be able to do something like Map = ( ( one, one, one ) ) and if each image was 32x32 would it be able to be side by ...
when ever a function has a object passed by value it uses either copy constructor or bit wise copy to create a temporary to place on stack to use inside the function,How about some object returned from function ? //just a sample code to support the qn rnObj somefunction() { return rnObj(); } and also explain how the return value is ta...
I'm trying to write a simple GUI application using Qt framework. The purpose of this app is to retrieve data from my isp and parse them for presentation. How do i authenticate my user/password with the webserver and retrieve the html page in question? Are there any utility libs that make this task trivial? I figure i need to interac...
When i try to $ make depend -f gcc.mak a middleware on my Ubuntu machine I get this /usr/include/../include/limits.h:125:26: error: no include path in which to search for limits.h This is the contents around limits.h:125: /* Get the compiler's limits.h, which defines almost all the ISO constants. We put this #include_next outs...
I'm playing around with Box2D for fun right now, and after getting the hang of some of the concepts I decided to make my own test for the test bed (Box2D comes with a set of examples and has a simple extendable Test class for making your own tests). I started by grabbing one of the other tests, ripping out everything but the function sig...
Here's a constructor for my Game class: // Construct a Game to be played with player on a copy of the board b. Game(const Board& b, Player* player) { ... } Here's how I'm using the constructor: Player p("Player Name"); Board b(6,3); Game g(b, &p); How does this work? Is b being copied? If I want to save a pointer to player, shou...
Hello all :) Working on an algorithm to look at a STL container of STL strings (or other strings, making it general) Basically it loops through something like a std::list and returns the length of the longest beginning in common. It's for processing lists of files, like this: C:\Windows\System32\Stuff.exe C:\Windows\Things\InHere.txt...
I have 2 static objects in 2 different dlls: An object Resources (which is a singleton), and an object User. Object User in its destructor has to access object Resources. How can I force object Resources not to be destructed before object User? ...
Hello all :) I need to get a reference to an iterator of a reference. However, my compiler is choking on this code: template <typename InputIterator> size_t iLongestBegin(InputIterator first, InputIterator last) { typedef typename std::iterator_traits<InputIterator>::reference SequenceT; //Problem is next line typedef t...
Hi. I´m pretty new to programming in C++ and I´m using pthreads. I´m cross compiling my code for OpenWRT but for some reason I get segmentation fault when I run the program on my board but it runs fine on my PC. I suspect that the error occurs in the linking stage of the compilation because I tried a small C program and that worked fine...
I'm buiding an API that allows me to fetch strings in various encodings, including utf8, utf16, utf32 and wchar_t (that may be utf32 or utf16 according to OS). New C++ standard had introduced new types char16_t and char32_t that do not have this sizeof ambiguity and should be used in future, so I would like to support them as well, but...
I am currently working on a program that read each line from a file and extract the word from the line using specific delimiter. So basically my code looks like this #include <iostream> #include <fstream> #include <string> using namespace std; int main(int argv, char **argc) { ifstream fin(argc[1]); char delimiter[] = "|,.\n "; ...
struct InkPen { void Write() { this->WriteImplementation(); } void WriteImplementation() { std::cout << "Writing using a inkpen" << std::endl; } }; struct BoldPen { void Write() { std::cout << "Writing using a boldpen" << std::endl; } }; template<class PenType> class Writer : public PenType { public: v...
I've found that WH_MOUSE is not always called. Could the problem be that I'm using WH_MOUSE and not WH_MOUSE_LL? The code: class MouseHook { public: static signal<void(UINT, const MOUSEHOOKSTRUCT&)> clickEvent; static bool install() { if (isInstalled()) return true; hook = ::SetWindowsHookEx(WH_MOUSE, (HOOKPROC)&mousePr...
I've been having big problems in reproducing and finding the cause of a bug. The occurence seems entirely random, so I suspected an uninitialized variable somewhere. But then I found this piece of code: CMyClass obj; // A obj.DoStuff(); if ( somebool ) { CMyClass obj; // B obj.DoStuff(); } obj.DoOtherStuff(); It seems as tho...
How do I exit a while loop immediately without going to the end of the block? e.g. while(choice!=99) { cin>>choice; if (choice==99) //exit here and don't get additional input cin>>gNum; } any ideas? ...
I use the DeleteFile and CopyFile methods. Do these functions throw exceptions or just set errno and lastError? Do I need to surround this code with try and catch? ...