Understanding dynamic_cast in C++: Safe Downcasting Explained
What Is dynamic_cast in C++? Purpose Safely convert between polymorphic types at runtime Commonly used to downcast from a base class to a derived class Performs a runtime type …
Category: OOP
Teaching Kids Programming – Introduction to Object Oriented Programming
Teaching Kids Programming: Videos on Data Structures and Algorithms Object Oriented Programming (OOP) is an important programming design paradigm. We model data in classes and objects. Class is the …
Factory Design Pattern in Object Oriented Design Programming
In OOP (Object Oriented Programming), we use inheritance to achieve the polymorphism. The factory design pattern allows you to create/manage different types of classes in a single place. Let’s …
Microbit Programming: How to Make a Catching-Apple Game by Using Sprites Objects?
Last week, we talked about the LED pixels. And by using the knowledge we have learned so far, we can make a pixel running on the Microbit’s LED. Last …
How to Design a High Performance/Scalable Hit Counter Class?
June 11, 2019
algorithms, c / c++, coding exercise, data structure, design questions, OOP
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Design a hit counter which counts the number of hits received in the past 5 minutes. Each function accepts a timestamp parameter (in seconds granularity) and you may assume …