Domain Arrivals
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Featured in Domain Arrivals · 2026-08-18

code-drill: 96 coding problems, straight in the browser

codedrill.online ↗ · Learning & Exams · score 81.0
○Open: public page gives enough substance to understand the site $Paid: pricing, booking, ecommerce, subscription, or paid access is visible ADAds: visible ad load or ad-supported content ✦Pretty: notable design, copy, craft, or presentation ◆Pro: polished, finished-feeling, serious, or operationally mature ◇Niche: specific audience, workflow, or unusually focused use case ◉Human: personal, local, community, civic, handmade, or real-person signal !Suspicious: scammy, spammy, trust theater, finance fog, or credibility concern

A Korean-language coding-test practice site with a 24-week curriculum, browser-based JavaScript and Python execution, and automatic grading.

Why it surfaced

code-drill turns familiar interview problems into a structured path, from FizzBuzz and array sums through KMP, graph algorithms, dynamic programming, and more. It requires neither installation nor login, and lets learners filter the 96 problems by difficulty and technique.

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The Plotter’s 09:30 Shift

August 18’s newborn domains include an obsolete pen plotter clocking in at 09:30, emergency warnings designed for sight, touch, or hearing, a funeral-folder tool calibrated for printer drift, and photographs of Colombian rental signs turned into a housing map.

This is one of 1,000 discoveries in the 2026-08-18 Domain Arrivals issue.

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An interactive radial timeline maps 331 societies across 5,000 years by era, duration, region, and language family.

 Rooted in Math: Three Sisters, Five Students, Zero Fees rootedinmath.org

A free neighborhood summer math program for children entering grades 3–5, taught by three sisters in small, practice-focused sessions.

 Room 214 Print Lab Turns Classroom Ideas into 3D Objects theroom214.com

A student-run school 3D-printing service lets teachers submit ideas, receive a design review, and get finished objects delivered to their classroom for free.