Bias vs Variance — Machine Learning Interview Questions🎯 Clean intuition 🔹 Bias (systematic error) Bias comes from overly simple assumptions in the model. Model too simple → misses important structure in the data Predictions are consistently skewed inApr 25 · 2 min readujjwalkar.hashnode.dev
Dependency Injection Finally Made Sense When I Stopped Thinking Like a Developer1. Introduction For a long time, Dependency Injection (DI) felt unnecessary to me. I kept asking myself: “Why am I writing an extra interface when I still have to write the implementation?” Isn’t that just… overengineering? This question is surpris...1TFeb 14 · 3 min readujjwalkar.hashnode.dev
🧠 JavaScript Hoisting Explained Simply (With Examples)Introduction to JavaScript Hoisting JavaScript hoisting is a quirky concept that can easily trip up beginners. It's one of those behaviors in the language that you must see to believe. But once you understand what hoisting is and how it works under t...Jun 10, 2025 · 5 min readujjwalkar.hashnode.dev
Avoid this 10 common mistakes React Developers while writing useState.In this simple guide, we dive into the useState hook in React and identify the 10 most frequent mistakes developers encounter. Whether you’re experienced or just starting, knowing these mistakes can help you write better code. From setting up useStat...Nov 26, 2024 · 2 min readujjwalkar.hashnode.dev