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This is a submission for the Hacktoberfest Open-Source AI Challenge Week 1: Touch Grass . What I Built The most useful button in GroundLens is “Take this mission outside.” It gives the screen a stopping point. GroundLens learns a small color palette from an outdoor photo, lets you choose one color, and asks you to find it in two different places. A leaf and a stone. Bark in sunlight and bark in shadow. The task is to notice what a label would miss: light, texture, distanc...

Hi there👋, I’m Nishchay, an Engineer, I am currently exploring the world of AI and Self Hosting. This is my space to share my thoughts with you. I have over ten years of experience in the software industry, where I have worked with various organizations in both B2C and B2B sectors. Over the years, I have worked with many technologies and tools that fascinated me. I began my journey with PHP and have since built Native Android Apps and React Native Apps. I've also had the chance to work wit...

Polling is the first thing everyone builds and the last thing anyone is proud of. Here's the migration, the code, and a way to measure your own before/after instead of trusting mine. Every live scoreboard starts the same way. You write a setInterval, hit an endpoint every few seconds, diff the response, and update the screen. It works on day one. It keeps working right up until someone watches a goal on TV and then waits several seconds for your app to catch up. I moved a live-score featur...

What if you met someone through what they build with AI — before seeing their photo or job title? That was our experiment for Coffee Meets Codex , built at DevDay Exchange Community Hack Day: Taipei on Oct 4. We got 3rd place — voted by other builders, not judges. This is the technical breakdown of how we did it in a few hours, and why our agent kept building after we stopped. The idea: start with what people make Most social apps start with a profile. We flipped it: St...

AeroGemma: Checking If You Can Actually Touch Grass Today 🌿 I spend most of my day in front of a screen, so when the Touch Grass challenge came up, I thought it fit me pretty well. But I also noticed a problem. Going outside isn't always a good idea. If the air is full of PM2.5, ozone and smog, a run or a walk can do more harm than good. I'm from Delhi NCR, so I know this one personally. So I built AeroGemma, a web app that tells you whether it's safe to go outside right now. It pulls live...

CH-Ops access control provides a dedicated permission layer for managing who can use the CH-Ops application and what they can do inside it. Managing a ClickHouse® cluster is only one part of running a database platform. Once a team starts using a shared administration tool, another question becomes important: who is allowed to use the tool, and what happens to the tool's own configuration if the application is lost? CH-Ops addresses both concerns with application-level access control and ...

The blockchain industry should never go stale, but something’s off. What used to feel wide open is getting squeezed by prediction markets and memecoins. That can’t be the whole story. When I first ran into Web3, CryptoKitties were a thing, NFTs were everywhere, and DeFi was exploding. You could seriously imagine building the next decentralized stablecoin, the next onchain collectible, the next lending protocol, with millions of people actually using the chain. Then a lot changed. Thousands...

If you're shopping for a used car, the single most expensive mistake is buying a vehicle with a branded title you didn't know about. This post explains what title brands are, how NMVTIS works, and where a plain VIN decode fits in. What is a title brand? A title brand is a permanent notation a state DMV adds to a vehicle's title when something significant happens to it. Common brands include: Salvage – an insurer declared the vehicle a total loss (damage cost exceeds a s...

Vengo del mundo de los negocios, la logística y la atención al cliente, pero hoy mi cabeza está metida en bases de datos, APIs y Node.js, cursando la carrera de Analista de Sistemas. Estoy convencido de que los mejores productos tecnológicos se hacen entendiendo primero el dolor del negocio. Y como la mejor forma de aprender es tirándose al agua, esta semana me sumé al #Hacktoberfest. ¡Ya tengo mis dos primeros Pull Requests en revisión para un proyecto Open Source! Más allá de sumar códig...

The usual argument for AppSheet over Power Apps is about where the data lives. AppSheet keeps its records in a Google Sheet you own, so if you cancel the subscription the app disappears and the spreadsheet stays. Power Apps keeps them in Dataverse, which is a proper relational database but not a file you can open. That argument is correct as far as it goes. The rows survive. What I wanted to know before relying on it was whether the rows still mean anything once the app that wrote them is gon...

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Abstract: Development tools report what type an expression has, but not why it has that type. This paper develops a theory of type slicing that answers such questions: a programmer selects a term, queries any part of the type information associated with it, and receives a slice of the program—a well-formed partial program with irrelevant sub-terms folded away—that suffices to reproduce the queried type. We formulate type slicing for bidirectional type systems, where synthesis slices explain the ...

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