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DSDoogal Simpsondoogal.dev5d ago · 6 min read

How HyperLogLog Counts Billions of Views with 12KB RAM

TL;DR: HyperLogLog (HLL) is a probabilistic data structure that estimates cardinality (unique counts) with minimal memory. Instead of storing millions of unique IDs, it hashes incoming data and tracks

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KOKehinde Onasanyakehindeonasanya.hashnode.devAug 15 · 10 min read

Python Names, Objects, Binding, Mutation and Rebinding

Introduction A common way to think of a Python variable is as a box that stores a value. You write x = 10, and the idea is that Python creates a box called x and puts 10 inside it. It is a useful mode

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SCSnigdha Chatterjeesnigdha-tech-journey.hashnode.devAug 15 · 8 min read

What I Learned Before My First Day of B.Tech CSE

Introduction Standing at the threshold of college life is both exciting and uncertain. As I prepare to begin my Bachelor of Technology journey in Computer Science and Engineering (CSE), I have realize

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DSDoogal Simpsondoogal.devAug 11 · 4 min read

Why Exponential Math Breaks Software Scaling

TL;DR Humans struggle to intuitively grasp exponential growth and probability, like the 1-in-33-million odds of flipping 25 consecutive heads. While the gambling industry exploits this cognitive gap f

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MRMohan raolearnwithmohan.hashnode.devAug 11 · 5 min read

Simple Factory vs Factory Method vs Abstract Factory: The Guide I Wish I Had

Simple Factory vs Factory Method vs Abstract Factory: The Guide I Wish I Had If you've ever looked at Simple Factory, Factory Method, and Abstract Factory side by side and thought "these all just... c

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KMKaustubh Mishrakmscratch.hashnode.devAug 9 · 10 min read

HOW JAVA STORES NEGATIVE NUMBERS AND THE LIE OF 0.7

Hello! all, a warm welcome to my scratchPad. If you are new to this series and wanna know more about it, as well as my resources and motivation behind it, you can read it up here in the Series Introdu

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OAOlumide Adeolachasfatprojects.hashnode.devJul 31 · 17 min read

Foundations of Computer Programming: Understanding How Software, Hardware, and Programming Languages Work Together

What Is a Computer? At its most fundamental level, a computer is a machine that processes information. It takes input, performs operations on that input, and produces output. But this definition, whil

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DSDoogal Simpsondoogal.devJul 27 · 4 min read

How the Luhn Algorithm Validates Credit Cards Instantly

I use the Luhn algorithm to validate credit cards instantly on the client side without querying a bank. By doubling every second digit from the right and summing them, the browser checks if the final

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KPKamal Poudelkamalpoudel.hashnode.devJul 27 · 5 min read

Jack of All Trades, Master of None: Trying to Finally Choose a Direction

For a long time, I have felt like a “jack of all trades, master of none.” I have touched a lot of different technologies. C. C++. Java. Python. PHP. Laravel. .NET. HTML. CSS. React. Django. Data analy

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ARAditya Rajomegaabot.hashnode.devJul 21 · 4 min read

Day 1–2: My First Steps into Cybersecurity

I'm a final-year Computer Science student aiming for a SOC Analyst or Network Security Engineer role after graduation, and I'm logging the process of actually getting there. I missed posting yesterday

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#computerscience

Explore Hashnode

Trending tags this week

How HyperLogLog Counts Billions of Views with 12KB RAM

Python Names, Objects, Binding, Mutation and Rebinding

What I Learned Before My First Day of B.Tech CSE

Why Exponential Math Breaks Software Scaling

Simple Factory vs Factory Method vs Abstract Factory: The Guide I Wish I Had

HOW JAVA STORES NEGATIVE NUMBERS AND THE LIE OF 0.7

Foundations of Computer Programming: Understanding How Software, Hardware, and Programming Languages Work Together

How the Luhn Algorithm Validates Credit Cards Instantly

Jack of All Trades, Master of None: Trying to Finally Choose a Direction

Day 1–2: My First Steps into Cybersecurity