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👋 Welcome to keysub

Free Vue, React, TypeScript, and modern JavaScript tutorials, fun general-knowledge reads, Korean model restaurant search, lotto number picks, and local weather, all in one place.

Study

Open study materials, lessons, and source code in one place.

📚 Study RoomA study room with lessons and learning materials by language. ⚛️ React Pilot ProgramTry out a pilot program built with React.⚠️ Available on desktop only. 💚 Vue Pilot ProgramTry out a pilot program built with Vue.⚠️ Available on desktop only. 📂 Keysub GitHub CodeBrowse source code for some pilot program features.🚧 Under maintenance.

Lounge

Chat on the community board and take a break with lottery number picks.

📋 Community board

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    🎰 Lottery number picks (Korean Lotto)

    ⚠️ [Disclaimer] Picks are statistics-based and do not guarantee a win. Users are responsible for any consequences.

    ⚙️ Recommendation algorithm We use hypergeometric statistics and combinatorics to examine past draws and diversify number combinations. Backtests have not shown better results than the random expectation (0.8 matches on average). Wins are not guaranteed.

    Restaurant location

    Map:

    Log in to recommend or review.

    Source: Korean Food Promotion Institute, "Guide to Korean Menu Names in Foreign Languages (800 dishes)"

    Find excellent restaurants on the map

    Move the map and press 'Search this area', or find a place to search around it.

    Only restaurants with a confirmed location are shown on the map.

      Restaurant locations: MOIS road-name address data · Place search: MOLIT Digital Twin Korea (VWorld) · Map: Kakao Map

      Useful tools

      Eat like a local at certified neighborhood restaurants, plus a product detail page generator.

      🍽️ Eat Like a Local: Certified Neighborhood Restaurants

      Skip the tourist strips and eat where Koreans eat every day. These neighborhood restaurants are certified by local governments for hygiene, and many are long-running local favorites.

      or search by name, food or address
      e.g. Namdaemun Mangnae (spacing does not matter)

      👆 Product detail page generator

      Create a polished product detail page for your shop using only images and product information.

      🚨 Report an issue or send a suggestion

      👆 Create a product detail page

      Drop images here or click to select.