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(A case for) Creating a stack-allocated Stack container in C++

Oct 6, 2023 · 3 min read · I've always looked inside the C++ STL and wondered why the library provided stack container is not allocated on the stack section but is actually allocated on the heap. A container which is allocated on stack would be handy in embedded systems where ...

Swapping the position of the two words in a string represented by a singly linked list

Sep 23, 2023 · 6 min read · Recently I've been giving interviews as my last contract got completed. In one of the interviews, I was asked to write a data structure for a string using a singly linked list. The constraint was that the string would have exactly two words separated...

Converting any class into a Singleton class in C++

Aug 31, 2023 · 4 min read · Singleton is one of the creational design patterns. A singleton class has only one instance and provides a global point of access to that instance. It's commonly used when you want to restrict the instantiation of a class to a single object, which ca...

A tutorial for accessing C/C++ functions within a shared library (.dll/.so/.dylib) from Rust

Dec 4, 2022 · 7 min read · [19-09-2023] Updates: Add instructions and code for an alternative way to build and run using build.rs and cmake-rs Fix the reason why not to link to C++ functions directly Include <cstring> in the code and use free instead of delete as strdup gen...

Correctly rotating an image to an arbitrary angle in OpenCV

Sep 10, 2022 · 3 min read · Introduction Have you ever tried to rotate an image in OpenCV? It's damn simple, right? You include the OpenCV headers:#include <cmath> #include <iostream> #include <algorithm> #include <opencv2/core.hpp> #include <opencv2/imgproc.hpp> #include <ope...