📰 Dev.to · SEN LLC

Shakashaka: the rule is about whole regions, and it is exactly a rule about one lattice point

Solving Yajilin: clues can pin the shading, but they can never steer the loop

Solving Nurikabe with constraint propagation: three-valued cells, a reachability flood, and a uniqueness proof

Solving Masyu with constraint propagation: an edge model, local patterns, a closure guard, and a uniqueness proof

Solving Slitherlink with Constraint Propagation — Fixpoint Clue/Vertex Rules, Closed-Loop Pruning, and Puzzles Proven Unique

Building a CSS Specificity Calculator — Counting (a,b,c) and the :is() / :where() Trap Most Implementations Fall Into

A Shortest-Path CLI in Rust — Making a Min-Heap from a Max-Heap, Path Reconstruction, and Rejecting Negative Weights

Building a WCAG Contrast Checker — Relative Luminance, sRGB Gamma, and the Step Most Implementations Skip

Implementing Huffman Coding in Go — Merging the Two Rarest Nodes Builds the Optimal Prefix-Free Code

Building a Base Converter — BigInt for Unlimited Digits, and Detecting Repeating Fractions

A Fuzzy-Finder CLI in Go — Two-Row Edit Distance, Unicode Correctness, and Mutex-Free Concurrency by Index

Visualizing git log in the Browser — Punchcard Heatmaps and the Timezone Trap

Explaining SQL in Plain English with a Recursive-Descent Parser — and Why Logical Execution Order Is the Real Lesson

A Hello World Museum for 84 Languages — and the Round-Trip Test That Makes a Tiny Syntax Highlighter Trustworthy

A Quiz Is Only as Good as Its Wrong Answers — Building Algorithmic Distractor Generation for a Japanese Idiom Quiz

Try the Tech Radar #6 (Final) — Semantic Layer in 200 Lines: One Definition, Many SQL Consumers

Try the Tech Radar #3 — JSON Schema LLM Prompt, Visualised

Try the Tech Radar #2 — Markdown Typst Converter (Typst's Syntax Is Closer to Markdown Than LaTeX)

Try the Tech Radar #1 — TOON Cuts JSON Token Cost by 71% for LLM Context

A Visual CSS Grid Builder in 500 Lines — How fr, minmax, and repeat Actually Compute Sizes

An npm Downloads Comparison Chart in 300 Lines of Vanilla JS — Nice-Tick Math and API-Direct Fetch

Building a Mini Tailwind-to-CSS Converter — How Utility Class Names Map to Real CSS

Building a Chord Progression Generator in the Browser — Music Theory in JS, Sound via Web Audio API

Visualizing 4 Sorting Algorithms with JavaScript Generators — O(n ) vs O(n log n) in Real Time