Vaibhav Haldia

@VaibhavHaldia

on my way of learning, come along!

IndiaJoined May 2021

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Vaibhav Haldia's blogs

vhald's blogvhald.hashnode.dev13 posts

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Recently published

VHVaibhav Haldiavhald.hashnode.devOct 23, 2025 · 6 min read

Unix File Permissions: A Comprehensive Technical Overview

Permissions in Unix are an integral part of the operating system. You can see the details of all files in the current directory by using options -l and -a combinedly with ls command: ls -al Every file has an owner (also referred to as the user), a g...

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VHVaibhav Haldiavhald.hashnode.devOct 7, 2025 · 3 min read

Software Testing Types: Technical Reference

Evaluation Framework Every test type answers three questions: What does it test? When is it executed? What does failure indicate? Unit Tests AspectDescription TestsIndividual functions/methods in isolation ScopeSingle atomic unit with no e...

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VHVaibhav Haldiavhald.hashnode.devSep 13, 2025 · 3 min read

Essential Jupyter Notebook Shortcuts for Faster Workflow

Here are the most frequently used Jupyter shortcuts organized by importance: 🔥 ESSENTIAL (Daily Use) Command ModeShortcutEdit ModeShortcut Run cell, select belowShift + EnterRun cell, select belowShift + Enter Run selected cellsCtrl + EnterR...

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VHVaibhav Haldiavhald.hashnode.devJul 24, 2025 · 3 min read

🇩🇪 German Language Mastery Timeline

Systematic 6-Month Journey to A1/B2 Proficiency Learning Architecture Overview Foundation Phase (A1/A2) - 2.5 Months Intermediate Phase (B1/B2) - 3.5 Months Foundation Phase: A1/A2 Mastery 2.5 MonthsMonth 1: Core Foundation**Month 2: Grammar Exp...

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VHVaibhav Haldiavhald.hashnode.devJul 23, 2025 · 7 min read

Math Symbols Explained with Python

When working with Machine Learning projects, you will come across a wide variety of equations that you need to implement in code. Mathematical notations capture a concept so eloquently but unfamiliarity with them makes them obscure. In this post, I’l...

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Vaibhav Haldia

About

Available for

Vaibhav Haldia's blogs

Recently published

Unix File Permissions: A Comprehensive Technical Overview

Software Testing Types: Technical Reference

Essential Jupyter Notebook Shortcuts for Faster Workflow

🇩🇪 German Language Mastery Timeline

Math Symbols Explained with Python

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Vaibhav Haldia

About

Available for

Vaibhav Haldia's blogs

Recently published

Unix File Permissions: A Comprehensive Technical Overview

Software Testing Types: Technical Reference

Essential Jupyter Notebook Shortcuts for Faster Workflow

🇩🇪 German Language Mastery Timeline

Math Symbols Explained with Python