Hello everyone, I've created a class and created an array of objects under that class and filled it all up with data. Now i want to sort the entire array by a specific member of that class, how do I do this using the stable_sort() function? Edit: Ok, i have this right now, class sortContiner { public: double position; int ke...
If I have something like bool operator ==(const uint128& x, const uint128& y); how can I get gdb to disassemble it? ...
I am trying to convert a double to a string in a native NT application, i.e. an application that only depends on ntdll.dll. Unfortunately, ntdll's version of vsnprintf does not support %f et al., forcing me to implement the conversion on my own. The aforementioned ntdll.dll exports only a few of the math.h functions (floor, ceil, log, p...
I am writing an XMLRPC client in c++ that is intended to talk to a python XMLRPC server. Unfortunately, at this time, the python XMLRPC server is only capable of fielding one request on a connection, then it shuts down, I discovered this thanks to mhawke's response to my previous query about a related subject Because of this, I hav...
Let's say I have, or am going to write, a set of related functions. Let's say they're math-related. Organizationally, should I: Write these functions and put them in my MyMath namespace and refer to them via MyMath::XYZ() Create a class called MyMath and make these methods static and refer to the similarly MyMath::XYZ() Why would I c...
when declaring the two dimensional array int random[height][width]; and then using it in a function void populate(int random[height][width], int x, int y) gives the error variable-size type declared outside of any function. I know I'm doing something wrong, and that its something small. I just have a bad memory... ...
Is there a way in code to detect what process or application starts my process or application. Any .net, vb6 or c++ code snips would be great ...
I am writing a Java application that uses a C++ library through a JNI interface. The C++ library creates objects of type Foo, which are duly passed up through JNI to Java. Suppose the library has an output function void Foo::print(std::ostream &os) and I have a Java OutputStream out. How can I invoke Foo::print from Java so that...
How can I make a screensaver in C++ that fades an image in and out at random places on the screen with a specified time delay on the fade out? Multimonitor support would be awesome. If you have a working code or know where I can get it, it would be great. Otherwise point me in the right direction. I'm looking for a method that has a sm...
I am trying to write an if statement but cannot find the proper expression form to use. I'm thinking of writing something like this: if ( var != type(int) ) However, I am unsure exactly how to go about doing this, and this method does not work. Am I at least thinking along the right lines? ...
I have a code similar to the following: class News { public: virtual void get() = 0; } class Cnn : News { void get () {...} } class Msnbc : News { void get () {...} } class Bbc : News { void get () {...} } main () { News * news = new Cnn; news->get () News * news = new Msnbc; news->get () News * news = new Bbc; news...
I have a basic understanding of C++ (and cicual basic, but I dont like it). I know the syntax, classes inheritance, pointers,m stuff like that. I can answer most basic exercises I come across and make simple programs like imperial/metric conversions and things like that. Best program I wrote (and I was chuffed with myself!) was a program...
void reverse_string(char* string, int str_size) { char tmp; int i = 0; int j = str_size - 1; while (i < j) { tmp = string[i]; string[i] = string[j]; string[j] = tmp; ++i; --j; } } I think this function is reentrant, since it doesn't use any global variable. It only modifies th...
Here is a particular scenario that I have been unclear about (in terms of scope) for a long time. consider the code #include <stdio.h> typedef struct _t_t{ int x; int y; } t_t; typedef struct _s_t{ int a; int b; t_t t; }s_t; void test(s_t & s){ t_t x = {502, 100}; s.t = x; } int main(){ s_t s; test(s); printf("value i...
I'm creating a task-manager type application in C++, and I'm currently using: ` void MyFrame::ProcChecker(bool showmessage=false){ HANDLE hSnapShot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,0); PROCESSENTRY32 *processInfo = new PROCESSENTRY32; processInfo->dwSize = sizeof(PROCESSENTRY32); int index = 0; string procList = ""; ...
Never turn your back on C++. It'll getcha. I'm in the habit of writing unit tests for everything I do. As part of this I frequently define classes with names like A and B, in the .cxx of the test to exercise code, safe in the knowledge that i) because this code never becomes part of a library or is used outside of the test, name collisi...
What is the difference between the two? I mean the methods are all the same. So, for a user, they work identically. Is that correct?? ...
static struct Args { char* arg1; unsigned arg2; unsigned arg3; char* arg4; } arg; My program saves command line args to a structure. Sometime all of the members are set... sometimes only a couple of them. In the case where only arg1 is set, what would the best practice be to do with the rest of the members? Thanks. ...
In web development, when we want to pass something between different pages, we might use the Session to save the data. But in MFC, what can we use to store these things? Thanks! ...
i am working on a Dialog based application in MFC, I need something just like visual studio's left panel, right panel, bottom panelwhich have a close button to close the panel. Anyone know how to implement this ? ...