I'm working on adding image drawing and erasing capabilities using OpenCV in C++. But the problem is that it's not fluid at all, the drawing only appears when I release the mouse and it appears very straight, as you can see in this video #include <opencv2/opencv.hpp> using namespace std; using n...

As a coding exercise, I am trying to implement a calculator which takes string as input, with addition (+), subtraction (-), multiplication (*), division (/) and power (^) functions. For example, given input string "-12.3456 + 2 ^ 3 * 3.123" to a function, it can output double result "12.6384". T...

Problem Statement You are given a weighted undirected graph G with N vertices, numbered 1 to N. Initially, G has no edges. You will perform M operations to add edges to G. The i-th operation (1≤i≤M) is as follows: You are given a subset of vertices Si={Ai,1, Ai,2, ,…,Ai,Ki} consisting of Ki verti...

I was doing the hackerrank "new year chaos" problem. Here is the description: It is New Year's Day and people are in line for the Wonderland rollercoaster ride. Each person wears a sticker indicating their initial position in the queue from 1 to n. Any person can bribe the person directly in fron...

I'm studying rust, and I decided to implement a BTree as a way of learning the language. Can anyone give me suggestions on the code? As the language has no inheritance, and we must replace it with delegation, I believe I am a little lost in the concepts of an object-oriented language. My concerns...

I'm learning Laravel to create a simple marketplace project, with a shopping cart feature, using a query builder. So the user can add products to the cart, when the user wants to pay an invoice will be created, along with the items purchased in the invoice Below is an example of the logic for the...

I am learning webRTC and tried to implement signaling service through websockets. I am still a beginner in backend development so not sure how correct my code is. Can you please review it and let me know the mistakes and how can I make scale it for multiple users using the service in real-time? s...

This is my attempt at creating a ray marcher for the command line for fun. I have some prior experience with C programming, although I'm far from being an expert, and little to no experience with computer graphics (so the renderer is probably going to be a mess 😅). Any feedback on the implementa...