I am working on a project. I am trying to run this query but it fails and gives the error. Here is the code: QSqlQuery* printQry = new QSqlQuery(); if
Introduction I am trying to learn about expression templates because it seems to be a very powerful technique for a wide range of calculations. I looked at diff
I am builfing a new c++ project and i want to integrate cmake and i dont know what is the best approach i have to follow my project tree looks like this : .
I know it is possible to use the fmt formatting library in header-only mode: How to use fmt library in the header-only mode? but - why isn't it just header-only
I read the documentation about CreateWindowEx CreateWindowExA CreateWindowExW and they all are seem to be identical to each other. if there is not difference w
I am currently trying to execute the following cpp program on Windows: #include <cstdlib> #include <iostream> #include "math.h" #include <fstream
I'm creating an iterator line, which I pass through a for() and draw with cv::circle points. So far so good, form a line drawing, by the iterator's line points.
I am looking for a generic, reusable way to shuffle a std::vector in C++. This is how I currently do it, but I think it's not very efficient because it needs an
Consider the following code. struct MyData{ MyData(const BYTE* pData, size_t uSize) : bucket_(pData, pData + uSize) {} std::vector&l
when I develop a PCIe communication interface, I used CreateFile & Readfile function to operate the device. But when I tried to set timeout to the handle, I
I have the following code: typedef unsigned char uchar; constexpr int leaing_ones(uchar const u8) noexcept { return __builtin_clz(static_cast<uchar>(~s
I'm trying to export a c++ library function through JNI, I've this header file called "Pylon.h" here's the source code: /* DO NOT EDIT THIS FILE - it is machine
The problem: In this task, you need to write a regular segment tree for the sum. Input The first line contains two integers n and m (1≤n,m≤100000), the s
I've been attempting to follow this guide here for writing a program in C++ that allows me to create an application window, however I ran into
I am building a project that includes webrtc with CMake, Visual Studio 2019 and ClangCl. This is the command I run to configure : cmake -G "Visual Studio 16 20
I want to have a class with a constant pointer to a function as a member. However, I'm instead creating functions with constant return values (a strange feature
Im trying to implement a simple LinkedList class, but this error shows up and I don't understand why. struct Node { public: int val; Node* next; Nod
Dear fellow programmers, Currently I am working on implementing a Microsoft RPC server / client program on Windows. Using nmake, I managed to compile the client
I have two arrays A and B which have m and n int variables respectively. I have a function f, and I want to generate all f(a, b) which a is in A and b is in B:
I have a QDialog where I can enter a Text and add it to a ListWidget inside the MainWindow after I clicked OK. Therefore I created a Method in the MainWindow cl