HPHarsh Panghalincxc.hashnode.dev·Jan 24 · 4 min readIs DSA Really Necessary? A Clear Answer for DevelopersAlmost every student or early-career developer asks this at some point: Is DSA necessary?Should I learn DSA or skip it and focus on development? You ask ten people and get ten different answers.Some say DSA is everything. Others say it is useless in ...00
HPHarsh Panghalincxc.hashnode.dev·Jun 30, 2025 · 9 min readChainlink Data Feeds: The Complete Developer's Guide to Real-World Data in Smart ContractsIn the rapidly evolving world of decentralized finance (DeFi) and blockchain applications, one of the most critical challenges developers face is connecting their smart contracts to real-world data. Whether you're building a lending protocol that nee...00
HPHarsh Panghalincxc.hashnode.dev·Jun 26, 2025 · 4 min readBuilding a Real-World Blockchain Voting System in SolidityA Clean, Secure, and Time-Limited Way to Run Elections On-Chain “Just let people vote on the blockchain” — sounds easy, right? Until you start asking the real questions: What if voting never ends? What if someone registers twice? What if bots tr...00
HPHarsh Panghalincxc.hashnode.dev·Jun 17, 2025 · 4 min readHow Harvard's CS50 Course on Algorithms Changed the Way I Think About Code (and Why Every Engineer Should Take It)When I first heard of Harvard's CS50, I thought, “Okay, it’s just another computer science course.”I was wrong.Very wrong. Algorithms module of CS50, I can confidently say: this isn't just a course—it's a mindset shift. Whether you're a beginner tryi...00
HPHarsh Panghalincxc.hashnode.dev·Jun 10, 2025 · 11 min readUnraveling the Web: From Your Code to a Live ServerHey there, If you're anything like me, you've probably heard a bunch of techy terms floating around: “Docker,” “SSH,” “Linux servers,” "containers," "CI/CD," "remote access"... and felt a bit like, “Whoa, what's all this jargon about, and how does it...00
