Since C++20, the constrained auto is introduced by: Concept auto identifier = init Which means, for instance: std::integral auto x = 10; is valid. Also, for n
I have large in-memory array as some pointer uint64_t * arr (plus size), which represents plain bits. I need to very efficiently (most performant/fast) shift th
Normally, to add a database to qt, we would go to the .pro file and add sql, but the project am working on was imported from cmake, so it does not have a .pro f
IMO, C++ template rules seem too restrictive and compiler implementation defined. But here I have a specific behavior I've had a hard time wrapping my head arou
Context: In my company we generate a lot of types based on IDL files. Some of the types require special logic so they are handcoded but follow the same pattern
I am working on a C++ program. I saw multiple lines of logs in this pattern in one of the files: #include <iostream> using namespace std; int main() {
std::unique_ptr has 2 template parameters, the second of which is the deleter to be used. Thanks to this fact, one can easily alias a unique_ptr to a type, whic
I want to change the cursor when the mouse is over a certain control. I'm having the png of my cursor. How do I achieve it in C++ ? I tried like this as descri
I have created an encrypt/decrypt program, when encrypting I store the encrypted QByteArray in a text file. When trying to decrypt I retrieved it and then put
std::atomic<T> and std::condition_variable both have member wait and notify_one functions. In some applications, programmers may have a choice between usi
I like to have a code::blocks project out of the sources of the caffe framework. I checked out the whole repository from caffe and made the makefile.config and
I'm trying to use ECW files in my application. I've built GDAL Library whit this command: ./configure --with-ecw:/usr/local/hexagon after completion of build p
I am using a Teensy with Teensyduino to control several stepper motors. This requires writing to timer value registers, and there are 4 needed for each stepper
I tried Doxygen, but it was a bit slow, and it generated a lot of irrelevant individual dot files, so I'm pursuing the clang way to generate a call graph. This
I'm trying to implement in capnproto something like boost's connect function which blocks and retries until the server is up, or basic_socket::async_connect tha
I'm working on an application where I need to insert some user unregistered SEI data in every frame before encoding it. I can't seem to find any API to add the
I am trying to implement Seam carving using Dijkstra's algorithm. So far, I have converted the image to grayscale and using a 2D array, I've found out the ene
I'm trying to write a program whose input is an array of integers, and its size. This code has to delete each element which is smaller than the element to the l
I have Base and Derive class at the below which related to polymorphism (Latebinding) : class Base { .... }; class Derive:public Base { .... }; int main() {
Now I want using PCA method to compute normal for the organized point cloud transformed from the depth image.Here is what I do: pcl::NormalEstimation<pcl::P