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Merging Objects Without Side Effects
A practical guide to safe, immutable merges in JavaScript/TypeScript — covering shallow vs deep, conflict rules, arrays, performance, and battle-tested utilities. Introduction…
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Combining Arrays in JavaScript: Spread vs. concat
A practical, senior-dev guide to merging arrays without surprises — covering performance, edge cases, TypeScript tips, and real-world recipes. Introduction If you…
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Sorting Arrays in JavaScript Without Bugs
A practical guide to writing correct, fast, and readable sorts in JavaScript — with copy-paste utilities you’ll reuse forever. Introduction Sorting is one…
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Removing Duplicates in JavaScript: Sets vs. Filter
Two common patterns in JavaScript to deduplicate arrays — and when to use each. Introduction Every developer eventually faces this: const arr =…
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How to Flatten Deeply Nested Arrays in JavaScript
From simple recursion to powerful ES2025 tricks Introduction You’ve probably run into this before: const nested = [1, [2, [3, [4,…
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Chunking Arrays: Handy Utilities Every JavaScript Dev Should Know
From data pagination to batching API calls, splitting arrays into chunks is one of those timeless problems every developer solves…
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Using find and findIndex in JavaScript
Practical patterns, type-safe predicates, immutable updates, and performance traps you’ll actually hit in real projects. Introduction Grabbing “the one item…
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map, reduce, filter in JavaScript: Stop Using Loops for Everything
A practical, copy-paste guide to expressive, bug-resistant data transformations in modern JavaScript — with real-world patterns, performance notes, and when loops still win….
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Using reduce for More Than Numbers
Why JavaScript’s most misunderstood array method is secretly your Swiss Army knife for transforming data, not just adding it up. Introduction…
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20 JavaScript Array Methods Every Dev Should Master
A practical, copy-pasteable guide to the array APIs you’ll actually use in real-world JavaScript — with gotchas, time complexity, and modern immutable…
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This One Security Mistake Could Let Anyone Hack Your Website
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Only 1% of Developers Truly Understand How XSS and SQL Injection Happen
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This Is How Real Developers Secure Their APIs in Production
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Most Developers Handle API Tokens the Wrong Way
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7 Security Mistakes Developers Keep Repeating and How to Fix Them