Hacker News: Front Page • 2026-07-26 17:28

Calling all open source maintainers working with Ruby

Article URL: https://www.rubyforum.org/t/calling-all-open-source-maintainers-working-with-ruby/553 Comments URL: https://news.ycombinator.com/item?id=49060277 Points: 4 # Comments: 1

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DEV Community • 2026-07-26 17:24

The checklist I wish I'd had before my first mainnet deploy

Pilots run a checklist before every takeoff. Surgeons run one before every incision. Not because they forgot how to fly or operate — because the cost of skipping a single step under pressure is too high to trust to memory. Shipping a Solana program to mainnet-beta belongs in that same category: irreversible actions, real value on the line, and a dozen small things that each seem obvious right up u...

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DEV Community • 2026-07-26 17:23

Episode 2: Exploring the Existing System

This series follows a fictional conversation between an experienced engineer and his nephew. Every episode explores one stage of how software moves from an idea to production. 👦 Nephew: Uncle, requirements are clear now. Wishlist. Guests can't use it, no duplicates, survives logout. I know what to build. So today I open VS Code and start typing? 👨‍🦳 Uncle: Not yet. Close Jira first. 👦 Nephew...

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DEV Community • 2026-07-26 17:22

I tried to port an Indian FII/DII trading strategy to MNQ, MES, SPY, and QQQ — it lost money on all four

A trading YouTube podcast (Upsurge Club, ft. Amit Dhamija) describes a strategy built entirely around India's NSE exchange data: daily FII (Foreign Institutional Investor) / DII (Domestic Institutional Investor) / Proprietary / Retail participant-wise open interest. The claim is that tracking whether "smart money" is building or unwinding positions gives a real edge over price action alone. I wan...

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Vue.js - The progressive Javascript framework • 2026-07-26 17:22

I built a free open-source alternative to commercial JavaScript image editors

submitted by /u/Silver_Trick_6899 [link] [comments]

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Hacker News: Front Page • 2026-07-26 17:20

Lidl Introduces the European Payment Method Wero in Germany

Article URL: https://unternehmen.lidl.de/pressreleases/260724_lidl_pi_einfuehrung_wero Comments URL: https://news.ycombinator.com/item?id=49060205 Points: 8 # Comments: 2

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DEV Community • 2026-07-26 17:20

Web effects with an X-ray mode: toggle a layer, see which lines of code it owns

Copy-paste an effect from anywhere and you get a finished snippet. It works, or half-works, and the moment you want to change one thing you're reading forty lines trying to find which one does it. TinkerFX is 79 web effects built the other way round: every one of them comes apart. Toggle a layer off, and its code gets struck through Each effect is split into named layers. Turn one off...

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DEV Community • 2026-07-26 17:16

I Built a Free Image Editor Because I Didn't Want to Pay for an Expensive One

Building an Open-Source Image Editor Because the Alternatives Were Too Expensive When I started integrating image editing into one of my applications, I evaluated several popular image editing libraries. Many of them were excellent. They offered polished UIs, powerful editing capabilities, and years of development behind them. However, I quickly ran into a problem. No single library ...

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DEV Community • 2026-07-26 17:15

Four ways a file-sync tool eats your data, and how to not

I've been building a small sync tool — it moves files between a remote project and a local folder, git-style (clone, pull, push, status). The moment you write a tool that touches other people's files on both sides of a network, you inherit a category of bug that's worse than a crash: silently destroying work the user can't get back. Here are four data-loss traps I hit (or nearly hit), each with t...

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Stop Validating AI Agents Only at the Start: Introducing Mid-Chain Governance
DEV Community • 2026-07-26 17:15

Stop Validating AI Agents Only at the Start: Introducing Mid-Chain Governance

Modern AI agents rarely complete a task in a single model invocation. Instead, they execute multi-step workflows: Retrieve documents Call APIs Query databases Generate intermediate plans Invoke external tools Produce a final response Most AI safety mechanisms, however, only validate the initial prompt or final output. This leaves an important gap. The Hidden Risk in Multi-Step AI Workflows Im...

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DEV Community • 2026-07-26 17:14

Clojure vars - notes

Intro named references (symbol) to values of fn they live in a namespace mutable reference to an immutable value Var is separate from the value so you can redefine it Note: symbol is just name Dig Deeper Functions are actually stored in vars (defn greet [name] (str "hello" name)) ; is equal to (def greet (fn [name] (str "hello" name))) ; because defn is macro ...

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DEV Community • 2026-07-26 17:05

LangChain’s tool routing is a bloated mess. So we built a <10ms local semantic registry to replace it at US Neural.

Look, LangChain was great to get the ecosystem started 0 to 1. But let's be honest: taking LangChain to production with 50+ tools is a nightmare of abstraction hell and brittle if/else logic. The AgentExecutor is slow, and relying on it to route complex tools feels like fighting the framework. Tool discovery shouldn't be an LLM's job, and it shouldn't require a heavy python wrapper. It’s a distri...

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/r/ReactJS - The Front Page of React • 2026-07-26 17:05

41 of 78 useEffects in our app shouldnt exist, mostly ai first draft

grepped every useEffect in src last week instead of fixing a form that flickered on load. agents write most of the first drafts here, i review. 78 of them. went through each with the "you might not need an effect" page open. 19 were state derived from props or other state. useState plus an effect that joins two strings. thats a variable. 14 were fetching on mount with a loading and error...

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DEV Community • 2026-07-26 17:02

I Built an AI App That Finds What You Can Build With Your Old LEGO Bricks

A few months ago, I was looking at a familiar scene that many parents probably know: A huge box full of LEGO bricks. Thousands of pieces. Different colors, shapes, and sizes. But the funny thing is… nobody knows what can actually be built with them anymore. My kids would open the box, search for a few minutes, and eventually say: "We don't have the right pieces." Then they would ask for a...

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DEV Community • 2026-07-26 17:01

We made SigNoz's LLM observability actually reachable…

-and added the one signal it was missing Track 01 — AI & Agent Observability. A hackathon project built from scratch, July 20–26, 2026. There's a sentence we said to each other on day one and then kept saying all week, because it kept being true: An API 200 is not evidence that a feature works. This post is the story of a project that lives entirely inside that sentence. It's about a f...

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Hacker News • 2026-07-26 17:00

Show HN: Tiny React charts that fit in a line of text, zero deps

Comments

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DEV Community • 2026-07-26 16:59

Openship: Your Deployment Tool Shouldn't Compete With Your App for RAM

The self-hosted PaaS drawer is not empty. Coolify, Dokploy, CapRover, Dokku, Kamal. If you have wanted a Heroku you actually own, someone has already built you three of them. So when Openship showed up in July 2026 and hit several thousand GitHub stars in about a week, the reasonable reaction was skepticism. Another dashboard for docker compose up. Having read through it, there is one architectu...

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Hacker News: Front Page • 2026-07-26 16:56

Using ThinkPad T480 as a mobile phone

Article URL: https://grego.site/blog/thinkphone Comments URL: https://news.ycombinator.com/item?id=49059977 Points: 6 # Comments: 3

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DEV Community • 2026-07-26 16:55

Linux Isn't Hard—You're Learning It the Wrong Way

Stop memorizing commands. Start understanding concepts. Many people believe Linux is difficult because they begin by trying to memorize dozens of terminal commands. After a few days, they forget most of them and feel discouraged. The truth is simple: Linux isn't hard---you're probably learning it the wrong way. Whether you want to become a Linux administrator, DevOps engineer, cloud engineer,...

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DEV Community • 2026-07-26 16:52

I Built a Security Scorer for 213 MCP Servers — Here's What Made the Difference

Every time I wanted to add an MCP server to Claude Desktop or Cursor, I ended up with a dozen browser tabs open, trying to answer one question the README never answers: is this actually safe to give tool-call access to my machine? MCP (Model Context Protocol) directories exist, but most of them just mirror GitHub — stars, a README excerpt, a copy-paste config. None of them score risk. So I built ...

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