DEV Community • 2026-07-30 09:30

Coordinate-based UI tests break. So we read the accessibility tree instead — from inside the simulator.

Every recorded mobile test I have ever inherited died the same way: someone moved a button. The recording said "tap at (340, 712)". The redesign moved that button up by one row, and the test kept tapping — now on empty space, or whatever happened to land there instead. It didn't fail right away. Three sprints later, it started failing in confusing ways, and by then nobody trusted the suite anymor...

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Hacker News: Front Page • 2026-07-30 09:28

Carolina Cloud pays SOFR on unused prepaid credits

Article URL: https://docs.carolinacloud.io/organizations/prepaid-interest/ Comments URL: https://news.ycombinator.com/item?id=49107713 Points: 11 # Comments: 1

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Newest questions tagged javascript - Stack Overflow • 2026-07-30 09:26

Why is useContext(CourseContext) returning undefined in App.jsx even though App is wrapped with CourseContextProvider in index.js?

I have a CourseContext.jsx file that exports two things: CourseContext: the context created with createContext(). CourseContextProvider: a provider component that supplies the context value to all of its children. In index.js, I wrapped the App component with CourseContextProvider: <CourseContextProvider> <App /> </CourseContextProvider> This means that App and all of its ...

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HackerNoon • 2026-07-30 09:24

AI Agents Are Becoming Blockchain's Biggest New RPC Consumers — Here's What That Breaks

AI agents are changing blockchain RPC traffic. Learn how MCP, structured APIs, and smarter infrastructure can reduce load, costs, and malformed requests.

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Hacker News • 2026-07-30 09:18

Show HN: Ask what reviewers love and hate about any Google Play app

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DEV Community • 2026-07-30 09:16

From Learning Machine Learning to Competing on Kaggle: My First End-to-End Playground Competition Journey

How I applied Exploratory Data Analysis, Feature Engineering, Pipelines, and Ensemble Models to solve a real-world machine learning problem—and the lessons I learned along the way. Introduction There comes a point in every machine learning learner's journey when watching tutorials and completing small practice exercises are no longer enough. After spending weeks understanding sta...

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DEV Community • 2026-07-30 09:16

What agents learned in Synthetics' Last Cradle

On July 29, 2026, five OpenClaw agents sat down at Synthetics' Last Cradle and played for five hours and twenty-one minutes without a human in the loop. They negotiated in public chat. They emailed each other. They opened HOLA lines. They ran cron heartbeats every five minutes. When the white hole opened at turn 33, two cradles were still alive. This is not a mechanics dump. It is what the playe...

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DEV Community • 2026-07-30 09:15

Mastering Impeccable: AI Skill Design for Frontend Architecture

Generative coding agents are powerful, but left to their own devices, they default to visual clutter: predictable gradients, uncalibrated spacing, and bloated, outdated component structures. Impeccable is a design skill package, created by Paul Bakaus, that runs directly inside Claude Code, Gemini CLI, and Codex CLI (as well as Cursor and GitHub Copilot) to enforce strict aesthetic guardrails, wit...

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Hacker News • 2026-07-30 09:13

Show HN: DeltaSnap – Undo for Mac, built on APFS snapshot entitlement from Apple

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DEV Community • 2026-07-30 09:11

Dominando Impeccable: Diseño de habilidades para arquitectura frontend con IA

Los agentes de código generativo son potentes, pero si se les deja a su libre albedrío, por defecto producen un desorden visual: degradados predecibles, espaciados sin calibrar y estructuras de componentes pesadas y obsoletas. Impeccable es un paquete de habilidades de diseño, creado por Paul Bakaus, que opera directamente dentro de Claude Code, Gemini CLI y Codex CLI (además de Cursor y GitHub Co...

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10 Best Swagger Alternatives for API Design, Testing, and Documentation in 2026
DEV Community • 2026-07-30 09:08

10 Best Swagger Alternatives for API Design, Testing, and Documentation in 2026

When I first started working with APIs, "Swagger" was almost synonymous with API documentation. If someone asked where the API docs were, the answer was usually "check Swagger." If someone wanted to understand an endpoint, they opened Swagger UI. Even today, many developers still refer to any OpenAPI-based documentation as "Swagger." But API development has changed a lot over the last few years....

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DEV Community • 2026-07-30 09:05

Magento 2 Admin Grid Performance Optimization: Speed Up Your Backend

Your frontend might be lightning-fast, but if your admin grids take 8+ seconds to load, your team is bleeding hours every week. Order grids, product grids, customer grids — these are the screens your operations team lives in. Every extra second is friction, errors, and lost revenue. In this guide, you'll learn the root causes of slow admin grids in Magento 2 and the specific optimizations that br...

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DEV Community • 2026-07-30 09:05

Pg-Java v1.0 Debuts as New PostgreSQL Driver — Plus SQLite Fix & DuckCon #7

Today's engineering digest highlights the introduction of pg-java, a brand new PostgreSQL driver for the JVM, alongside a critical RIGHT JOIN indexing fix for SQLite and the program announcement for DuckCon #7 Amsterdam. SQLite & Database Ecosystem This week's database ecosystem news highlights the official program announcement for DuckCon #7, showcasing upcoming developments for D...

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Hacker News • 2026-07-30 09:04

Show HN: I built myself the simplest worktree management tool

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24 Best AI Design Tools for Designers and Developers in 2026
DEV Community • 2026-07-30 09:04

24 Best AI Design Tools for Designers and Developers in 2026

Not long ago, designers relied on AI mostly for generating images or experimenting with quick concepts. Today, AI design tools can generate complete user interfaces, create interactive applications, write production-ready code, build marketing assets, and even help developers move from a Figma file to a working product much faster than before. That rapid evolution has also created a new problem. ...

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DEV Community • 2026-07-30 09:04

Telegram Bot API 10.2 Migration Guide: Rich Messages, Ephemeral Edits, and Communities

Telegram Bot API 10.2 looks like a small version bump, but it changes several parts of a production bot at once: Rich Messages gain typed blocks and embedded media Ephemeral messages gain a complete edit and delete lifecycle Communities introduce new topology events and metadata Mini Apps receive stricter origin protection Telegram released Bot API 10.2 on July 14, 2026. The safest upgrade is ...

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Hacker News • 2026-07-30 09:02

Show HN: Ripple – Auto-fixes downstream code when APIs change

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Flavio Copes • 2026-07-30 09:00

Storybook tutorial: build and test UI components in isolation

Use Storybook with React to develop components in isolation, model loading and error states, test interactions and accessibility, and run CI.

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DEV Community • 2026-07-30 08:55

LOCKS — per-page SVD cuts KV cache reads 10 at 1M context

Every decode step loads the entire KV cache from GPU HBM. At 128K tokens that is several GB; at 1M tokens it exceeds 60GB. The bottleneck is memory bandwidth, not compute. The GPU waits while the memory bus transfers data that is likely irrelevant to the current query. Why shared-basis sparse attention is structurally broken Quest, ShadowKV, and RocketKV reduce this cost by estimating ...

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DEV Community • 2026-07-30 08:55

Part 4: When an Angular Component Becomes Too Large to Maintain

Part 4 of the Angular in Production series One thing I've noticed after working on larger Angular applications is that components rarely becomes difficult to maintain overnight, it hapens gradually. When you add a feature and another, and new modals, new API calls and new permission checks. Nobody deliberately decides to create a thousand-line component. It simply happens because adding a little ...

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