Hacker News: Front Page • 2026-07-30 12:38

Why Is Everyone Trying to Build a Solid-State Battery?

Article URL: https://www.construction-physics.com/p/why-is-everyone-trying-to-build-a Comments URL: https://news.ycombinator.com/item?id=49109193 Points: 3 # Comments: 1

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Hacker News: Front Page • 2026-07-30 12:36

OpenJDK Interim Policy on Generative AI

Article URL: https://openjdk.org/legal/ai Comments URL: https://news.ycombinator.com/item?id=49109165 Points: 18 # Comments: 4

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DEV Community • 2026-07-30 12:30

Your Agent's Memory Is a Markdown File. Let's Audit It.

Quick check: does your agent stack have a memory.md in it somewhere? An AGENTS.md? A notes file the agent appends to when something seems worth keeping? Thought so. Mine did too. It's the pattern everyone converges on, it takes twenty minutes to build, and it genuinely works — right up until the day it hands a customer a fact that stopped being true in March. This post does three things: shows y...

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Hacker News • 2026-07-30 12:29

Show HN: Memsprout – share AI context with your teammates

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Hacker News • 2026-07-30 12:25

Show HN: Abendrot – The free and open-source macOS app for your circadian rhythm

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Hacker News: Front Page • 2026-07-30 12:21

Why Don't People Use Formal Methods?

Article URL: https://www.hillelwayne.com/post/why-dont-people-use-formal-methods/ Comments URL: https://news.ycombinator.com/item?id=49109026 Points: 11 # Comments: 1

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Product Hunt — The best new products, every day • 2026-07-30 12:17

Superlog Responder

FREE AI bug-fixing agent Discussion | Link

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Lobsters • 2026-07-30 12:17

Building Progressively Enhanced Forms Using htmx

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DEV Community • 2026-07-30 12:15

DSCI series / Rakulang CI, part2. Cro Application

In this episode I talk about developing web application based on well known cro framework and specifically how to create CI pipeline using DSCI tool. Here is example of very simple cro application (taken fro cro web site): use Cro::HTTP::Router; use Cro::HTTP::Server; my $application = route { get -> { content 'text/html', 'Hello Cro!'; } } my Cro::Service $service = Cro::...

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DEV Community • 2026-07-30 12:14

The 300px Canvas Bug That Shrunk My React Image Editor

This is a submission for DEV's Summer Bug Smash: Clear the Lineup powered by Sentry. Project Overview I am building a browser-based text removal workspace where a user uploads an image, paints over unwanted text or objects, and sends the resulting mask to an image-editing pipeline. The mask editor uses three stacked <canvas> elements: a base canvas for the uploaded image; an o...

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Hacker News: Front Page • 2026-07-30 12:14

How Old Is Ann?

Article URL: https://quuxplusone.github.io/blog/2026/07/29/how-old-is-ann/ Comments URL: https://news.ycombinator.com/item?id=49108971 Points: 6 # Comments: 0

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Hacker News: Front Page • 2026-07-30 12:13

What it means for an API to be RESTful

Article URL: https://en.andros.dev/blog/9761fd2e/what-it-means-for-an-api-to-be-restful/ Comments URL: https://news.ycombinator.com/item?id=49108966 Points: 7 # Comments: 2

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Hacker News: Front Page • 2026-07-30 12:13

CosmosEscape: Taking over Every Database in Azure Cosmos DB

Article URL: https://www.wiz.io/blog/cosmosescape-taking-over-every-database-in-azure-cosmos-db Comments URL: https://news.ycombinator.com/item?id=49108963 Points: 5 # Comments: 1

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DEV Community • 2026-07-30 12:05

Emergent Design & Gall's Law: When Complex Coding Problems Dissolve Instead of Being Solved

I recently read an article by the main maintainer of InversifyJS describing the journey of rebuilding its dependency resolution algorithm. What caught my attention wasn't the performance improvements or the technical details. It was something much more familiar. As I was reading, I realized they were experiencing the exact same phenomenon I had experienced years ago while creating InversifyJS. It...

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Real Python • 2026-07-30 12:02

Quiz: NumPy Tutorial: Your First Steps Into Data Science in Python

Test your NumPy knowledge of arrays, axes, broadcasting, indexing, masks, and data types, the foundation of data science in Python.

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DEV Community • 2026-07-30 12:02

How to store AI-generated images per user in object storage and delete the old ones

Use one key prefix per user, delete from the application every key you can name, and leave lifecycle rules to sweep the old temporary images nobody will ever ask for again. That's the whole design, and I've watched teams get it wrong in the same two ways for years: they either try to make the storage layer clever enough to know what a user is, or they hand the entire deletion problem to a lifecyc...

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DEV Community • 2026-07-30 12:02

How to Catch AI Hallucinations: A Copy-Paste Hallucination Checker Prompt (Tested)

You ask an AI a question. It answers in fluent, confident prose — complete with a study, a percentage, and a name. Some of it is wrong, and nothing about the wording tells you which part. That's the whole problem with hallucinations: the errors wear the same suit as the facts. The fix is not "trust it less" in some vague way. The fix is a repeatable audit step between AI wrote it and I used it. B...

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DEV Community • 2026-07-30 12:01

Top AI Papers on Hugging Face - 2026-07-30

10 paper AI nổi bật nhất trên Hugging Face hôm nay: robot thời gian thực, agentic search, coding agents và học tăng cường thế hệ mới Hôm nay, top paper được upvote cao trên Hugging Face cho thấy một bức tranh rất rõ về hướng đi của AI hiện tại: AI đang rời khỏi các benchmark tĩnh để tiến vào thế giới hành động thực tế — robot phải chạy nhanh hơn, agent phải tìm tài liệu tốt hơn, coding ...

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Hacker News: Front Page • 2026-07-30 12:01

Mbodi AI (YC P25) Is Hiring Robotics/Research Engineers

Article URL: https://www.ycombinator.com/companies/mbodi-ai/jobs Comments URL: https://news.ycombinator.com/item?id=49108840 Points: 0 # Comments: 0

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DEV Community • 2026-07-30 12:01

Why Your AI Agents Need Finite State Machines: Building Deterministic Workflows in a Vibe-Coding World

Originally published on tamiz.pro. The rise of "vibe coding" has democratized software development, allowing developers to build complex applications using natural language prompts. However, this same flexibility introduces a fundamental challenge for enterprise-grade AI agents: non-determinism. When you ask an LLM to "handle this customer support ticket," the model might draft an email, query a ...

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