DEV Community • 2026-07-29 13:22

The pipeline passed. The data still needs proof.

A pipeline job finishes without an error. The new table has 18% fewer rows. Should you rerun the pipeline, stop the release, or trust the new output? Before rerunning the job, preserve the two states you need to compare. A rerun can create another state and make the original change harder to explain. The first useful question is: which two states are we actually comparing? Pin down the ...

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Lobsters • 2026-07-29 13:22

Overengineered calculator: Zig + QBE

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DEV Community • 2026-07-29 13:18

Claude Opus 5 Is Better at Coding and Harder to Trust

Claude Opus 5 completed one of my coding tasks considerably faster than Opus 4.8. There was just one problem: it confidently reported that the issue was fixed when it wasn’t. That experience captures the trade-off with Anthropic’s latest Opus model. It is faster and more capable on difficult, multi-step work, but polished output can make its mistakes harder to notice. After testing it on coding...

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Why your Valhalla turn-by-turn distances are wrong: a distance-axis mismatch
DEV Community • 2026-07-29 13:18

Why your Valhalla turn-by-turn distances are wrong: a distance-axis mismatch

Originally published on my site. I build an offline motorcycle navigation app. It routes on-device with Valhalla, snaps the rider's GPS onto the route, and shows the usual "in 300 m, turn left." For weeks the turn distances were subtly, maddeningly wrong: the "200 m" callout would fire when I was clearly 350 m from the junction, or a turn would announce late. The instructions themselves were co...

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DEV Community • 2026-07-29 13:15

I Built an AI Agent With Claude Code, Then Had Claude Review Its Own Work

Introduction What happens if you build an AI agent with Claude Code, then have Claude itself review it? I recently built and open-sourced AI-Agent-Dev-WBS-OS, a project that structures the AI-adoption process and auto-generates a reproducible Work Breakdown Structure (WBS) from a stated goal, using Claude Code. This post focuses less on the implementation itself and more on an unusual ...

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𝚓𝚊𝚟𝚊𝚜𝚌𝚛𝚒𝚙𝚝 • 2026-07-29 13:15

I've made an open source JavaScript playground with support for npm packages, syntax highlighting, autocomplete, code sharing and much more!

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

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DEV Community • 2026-07-29 13:15

Six articles, 200 views. So I read the feed's source code.

Six articles in two months. About 200 views. Total. Here is the full table, because a postmortem without numbers is just a mood: # Article Views Reactions Comments 1 Coding agents should not hold write credentials 58 1 5 2 Agent workflows need an impact boundary 26 0 0 3 Blocked is not failed: agents need boundary feedback 31 1 0 4 A write is not just a write 38 0 1 5 The reasonin...

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Lobsters • 2026-07-29 13:12

It doesn’t matter whether “Matz is nice”

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DEV Community • 2026-07-29 13:10

Not all MCP servers are equal: BaaS MCP vs application MCP

Every platform now advertises an MCP server, and the label tells you almost nothing. Two servers can carry the same three letters and hand an AI agent completely different powers: one gives it your database, the other gives it your live app. Here is the difference between a BaaS MCP and an application MCP, and why that altitude decides what an agent can actually do for you. "Has an MCP s...

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DEV Community • 2026-07-29 13:08

URL Encoding Demystified: encodeURIComponent vs encodeURI

You are debugging a broken API call. The URL looks fine in your browser, but the server returns 400. You stare at the query string: ?q=hello world&filter=active. There is your problem — that space. URL encoding is one of those things every developer encounters but few fully understand. Let us fix that. The Two JavaScript Functions (and Why Both Exist) encodeURI() is for entire URL...

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DEV Community • 2026-07-29 13:07

Vibe Coding Didn't Kill Junior Devs' Careers. It Just Fast-Forwarded Them.

What was originally a joke, a colloquial term for projects that are done on the weekend, in which you tell a model what you want to do, don't read what it tells you, and follow it by feeling. It was completely out of that "hole" by 2026. Ninety-two per cent of U.S. developers are using AI coding tools daily, up 340% from the year before, and a growing number of junior developers built their entire...

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Hacker News • 2026-07-29 13:05

Show HN: PriEco (open source, 400M index, EU search engine) integrated Goggles

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DEV Community • 2026-07-29 13:05

Offensive audit, engineering edition — the 6-piece fix pattern in detail

May 2026 · Series "Trace Lock — Governance notes from pairing with AI to write code" · Post 7 of 9 This post is the engineering version of B1 Offensive audit. B1 covered "why audit the whole chain" and "what the overall flow looks like." This post unpacks the 6-piece fix pattern (working name, my own tentative term) used to actually fix each gap that the audit surfaced: the code shape of each...

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Hacker News: Front Page • 2026-07-29 13:05

TokenTown: A visual way to understand how LLMs work

Article URL: https://laurentiugabriel.github.io/token-town/ Comments URL: https://news.ycombinator.com/item?id=49097003 Points: 10 # Comments: 0

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DEV Community • 2026-07-29 13:03

Reviewing AI code is most of the job now, so I built a gym for it

You know the situation already: the assistants got good, most PRs in the queue are AI-written now, and we all spend more of the day reviewing than writing. No need to dwell on that. What's worth talking about is the part people mention less, which is why this kind of reviewing is so much more tiring than the old kind. When a tired person writes code, the code looks tired, and the weird names and ...

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Hacker News: Front Page • 2026-07-29 13:01

Handbook.md shows that long policy documents do not reliably govern agents

Article URL: https://arxiv.org/abs/2607.25398 Comments URL: https://news.ycombinator.com/item?id=49096969 Points: 3 # Comments: 0

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DEV Community • 2026-07-29 13:01

Talking to Claude Code through an Alexa

This was an afternoon experiment, so read it in that spirit. The goal was to start real coding work by talking to a speaker: not "set a timer", but "work on the board script", and have an agent plan it with me and go and do it. No laptop open. I gave myself a few hours, which means there are shortcuts everywhere. The backend is literally my laptop. The public entry point is a free tunnel. There i...

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Fish Audio's $52M Seed: Open Weights Got Them Here
DEV Community • 2026-07-29 13:01

Fish Audio's $52M Seed: Open Weights Got Them Here

Fish Audio announced a $52 million seed round on July 28, 2026, led by Coreline Ventures and Capital Today, exactly one year after the company launched. The Palo Alto startup reports $21 million in annual recurring revenue and more than 8 million users, and shipped a new flagship model, S2.1 Pro, alongside the round. The most telling detail sits in the release strategy: after open-sourcing three o...

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DEV Community • 2026-07-29 13:01

Autonomous AI Agents: The Next Automation Leap for Businesses in 2025

Autonomous AI Agents: Redefining How Businesses Operate For most of my two decades in technology, automation meant scripting repetitive tasks and hoping they didn't break. That era is ending. As I write this in 2025, I'm watching a fundamental shift unfold: software that doesn't just execute instructions, but reasons, plans, and acts independently toward goals. Having spent years at the...

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DEV Community • 2026-07-29 13:01

Your ML Pipeline Isn't a DAG of Tasks. It's a Graph of Assets

TL;DR — Airflow-style orchestration models ML pipelines as sequences of tasks that ran successfully, which is the wrong unit of abstraction for retraining, drift-triggered runs, and versioned artifacts. Asset-centric orchestration — treating datasets, features, and models as first-class, versioned objects with freshness contracts — matches how ML dependency graphs actually behave. The fix isn't p...

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