The fastest JS code I wrote this year… wasn’t JavaScript. Today I published the deeper story. It starts with a simple problem: pure JavaScript was becoming the bottleneck for large image comparisons. I experimented with multiple approaches and benchmarks and eventually ported the core algorithm to Rust. Along the way, I looked at existing tools like odiff. It's very fast, but typically used through spawned processes or long-running helpers to avoid that overhead. The interesting part for me was the interface layer. Instead of spawning binaries or running a server, the library uses N-API to let Node call the Rust implementation directly. That removes the process overhead and makes batch diffing much cheaper. If you like performance deep dives, the full write-up is here: https://lnkd.in/dDP58i6q Also, thanks to HackerNoon for selecting it as a Top Story.
Optimizing JavaScript with Rust for Large Image Comparisons
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🚨 Confused between the Spread (...) and Rest (...) operator in JavaScript? Many developers mix them up. 💡 They share the same syntax but serve completely different purposes depending on where they’re used. 🔹 Spread Operator • Expands elements from arrays or objects • Commonly used for copying, merging, or passing values • Helps maintain immutability in modern JavaScript • Makes code cleaner and easier to read 🔹 Rest Operator • Collects multiple values into a single array • Mostly used in function parameters or destructuring • Useful when working with an unknown number of arguments • Helps manage flexible and dynamic data ⚡ Quick rule many developers follow: • Spread → Expands values • Rest → Collects values 📌 Same syntax. Two powerful JavaScript features. #JavaScript #WebDevelopment #FrontendDevelopment #Coding #LearnToCode #100DaysOfCode
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𝗧𝗮𝗸𝗲 𝗖𝗼𝗻𝘁𝗿𝗼𝗹 𝗢𝗳 𝗬𝗼𝘂𝗿 𝗧𝘆𝗽𝗲𝗦𝗰𝗿𝗶𝗽𝘁 𝗖𝗼𝗱𝗲 You use TypeScript to add static types to your JavaScript code. But do you use it to its full potential? TypeScript's advanced type system is a powerful tool. It helps you model your domain with precision and catch errors at compile time. Here are some key features: - Union types: describe a value that can be one of several types - Intersection types: combine multiple types into one - Keyof operator: get a union of an object's keys - Generics: create reusable components that work with various types - Conditional types: express non-uniform type mappings You can use these features to build robust and type-safe code. For example, you can create a generic fetchJson function that uses conditional types and union types to be safer than the standard fetch function. Your challenge: treat the any type as a compiler error for the next week. When you're tempted to use it, ask yourself: - Do I need a union type? - Can I use a generic? - Should I define an interface? - Is there a utility type? Start by refactoring one old file in your project. Find an any and replace it using the techniques above. You'll see the benefits in your editor and gain confidence. What's the most interesting way you've used TypeScript's type system? Share your examples in the comments below! Source: https://lnkd.in/gdZP2pgV
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🚀 Day 37 - Revision Day 🔁 Today was all about revisiting previously learned JavaScript concepts and strengthening my foundation. No new topics......just focused revision to deepen understanding. 📚 What I revised: • JavaScript fundamentals (variables, data types) • Functions & scope • Arrays and objects • DOM basics • Problem-solving exercises ✅ Key Takeaways: ✔ Revision makes concepts stick better ✔ Small gaps become visible when you revisit ✔ Strong fundamentals = better coding confidence Slowing down today to move faster tomorrow...!💡 #LearnInPublic #JavaScript #WebDevelopment #CodingJourney #Consistency
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Sharing this helpful article. Maps and Sets in JavaScript: A Deep Dive JavaScript provides several ways to store and manage data, with objects and arrays being the most commonly used structures. However, when dealing with unique values or key-value pairs with better efficiency, Maps and Sets come to the rescue! Read now → https://lnkd.in/dvP2-4nH #ProgrammingCommunity #DeveloperJourney #TechEducation #Coding
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There is something trendy recently in my JavaScript bubble. It's a library called pretext ( https://lnkd.in/dKdApmXd ). Around that I stumbled onto another interesting example. That's what you are seeing on the video. Here's to play with it https://lnkd.in/dptqgWh3
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🚀 Practicing Selection Sort in JavaScript Today I spent some time strengthening my understanding of sorting algorithms by implementing Selection Sort on a single array using JavaScript. 🧠 My Approach: 1. Loop through the array 2. Track the index of the smallest element 3. Use an if condition to compare and update the minimum value 4. Swap it with the current position 🖋️ Example : let arr = [23,3,41,12,2,56,15] ; and the result is : [2,3,12,15,23,41,56] 📈 Time Complexity: Best Case : O(n²) Average Case : O(n²) Worst Case : O(n²) 📌 Key Takeaway: Selection Sort is all about selection + swapping. Simple logic, but powerful for building strong foundations. 🔗 Check out my GitHub for the full code. #JavaScript #DSA #CodingPractice #Algorithms #SelectionSort #LearningJourney 😊
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Many developers jump to frameworks… but ignore JavaScript fundamentals. It works — until things break. Then come the real issues: Confusion in logic. Debugging struggles. Weak problem-solving. Framework dependency. JavaScript in 2026 isn’t just syntax. It’s about mastering the core concepts. 💡 Must-Know Basics: • Variables & clean declarations • Data types & operators • Functions & logic building • Loops & arrays • DOM manipulation ⚡ Strong JavaScript basics = Strong developer foundation #JavaScript #WebDevelopment #FrontendDevelopment #CodingTips #LearnJavaScript #DeveloperLife #ProgrammingBasics #SoftwareEngineering
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Most developers use JavaScript… but don’t truly understand it. Here’s the truth: If you don’t understand: Hoisting Scope Execution Context You’re not writing JavaScript… You’re just guessing Example: Why does this work? console.log(a); var a = 10; And this breaks? console.log(b); let b = 10; The answer lies in how JavaScript executes code internally. Behind every line of JS: Execution Context is created Memory is allocated (Hoisting) Scope chain is formed Then code runs Once you understand this, everything clicks: Closures Async JS Debugging complex bugs This is not “advanced”… This is fundamentals most people skip. Start mastering the engine, not just the syntax. Follow Royal Decode for more real dev insights #JavaScript #CodingJourney #FrontendDeveloper #ProgrammingLife #DevTips #LearnJavaScript #RoyalResearch
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🚀 Day 67 | JavaScript Loops & Array Iteration Today I practiced JavaScript loops and working with arrays of objects 💻 🔹 What I Worked On: • Iterated through array of objects using for loop • Printed all elements and accessed object properties like loc • Used loop with step increment (i += 2) to print alternate values • Practiced reverse counting using for and while loops • Used forEach() for cleaner array iteration 💡 Key Learning: • Arrays of objects are very common in real-world applications • Loop conditions must be handled carefully (i < length vs <= length) • forEach() is simple and readable for iteration • Multiple ways to loop → choose based on requirement 🔥 Takeaway: 👉 Mastering loops is key to handling data efficiently in JavaScript Consistency is improving logic step by step 🚀 #Day67 #JavaScript #Loops #ArrayIteration #ProblemSolving #CodingJourney #10000Coders #WebDevelopment #SravanKumarSir
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Today I practiced the Best Time to Buy and Sell Stock problem in JavaScript. This problem looks simple at first, but it is a great exercise for improving algorithmic thinking. The goal is to track the best moment to buy and then update the maximum profit while scanning the array once. What this reminded me: understanding the reason behind a pattern is more important than just memorizing solutions. I’m sharing more JavaScript pattern exercises here: GitHub: https://lnkd.in/ej4fNeZs #JavaScript #Coding #Algorithms #ProblemSolving #SoftwareEngineer #GitHub #LearningInPublic
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