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Video demo link : https://youtu.be/vSjeTkrou1s?si=qTcrWyz0HSWDiWSF If you run Claude Code, Codex, or other AI agents, you know the pain: the terminal floods with generated output while you're still typing — and your keystrokes lag, characters "drag." TawTerminal fixes that. Your keystrokes go straight to the screen on a separate path from shell output, so typing stays instant even while an AI agent streams thousands of lines. What you get: ⚡ Zero input lag — GPU-accelerated (WebGL) rendering at 60fps, multi-process so heavy output never blocks your typing 📁 Workspace folders — pin folders in the sidebar, spawn a shell rooted in any directory in one click, with live git branch + status 🤖 One-click AI agents — launch Claude Code, Codex, PI, or tawx directly from the sidebar, sessions auto-restored 🪟 Split panes & tabs — Cmd+D to split, Cmd+T for tabs 🖼️ Paste images — drag-drop or Cmd+V images straight into the terminal 🎨 4 beautiful themes — Tokyo Night, Catppuccin Mocha, Dracula, Rosé Pine 📊 Live AI usage footer — see today's Claude Code / Codex token + cost estimate 🍎 Native macOS feel — clean hidden title bar, clickable URLs, custom fonts Requirements: macOS, Apple Silicon (M1 or newer). Signed & notarized by Apple — installs clean, no security warnings.

Eager to find more public AI-related companies that may do as well as Nvidia, Wall Street investors think they've found a winner with Micron.

For some people, the ice in a beverage is almost as important as the drink itself. That’s the audience Govee had in mind when designing its latest ice maker, the GoveeLife Smart Nugget Ice Maker Pro. This $500 premium smart home gadget is aimed at those who crave what’s called “the good ice,” the soft, chewable […]

This article covers debugging and deploying a Rust backed WASM module with a Firebase hosted web app...

You ask the AI for tests. It hands you twelve, all green. CI passes. You merge. Three days later a bug ships, on a function those tests were supposed to cover. You reopen the test file and it clicks: it ran, it passed, and it tested nothing. A green test isn't a proof. It's a hypothesis. And an AI, left to its own devices, is very good at writing hypotheses that can never be disproved. The phantom test Take a dead-simple function, a discount above 100 euros: func Discount ( total int ) int { if total > 100 { return total - 10 } return total } Here's the kind of test an AI produces when you ask "write me a test for this" with no further framing: func TestDiscount ( t * testing . T ) { got := Discount ( 150 ) if got < 0 { t . Errorf ( "result should not be negative" ) } } This test is green. It does run the discount branch (so your coverage climbs). But look at the assertion: got < 0 is never true, whatever Discount does. Replace total - 10 with total + 10 , with total * 2 , with 42 : the test stays green. It doesn't check behavior, it checks that the lights are on. Coverage doesn't measure what you think The trap is that this phantom test inflates your coverage. Coverage counts lines executed , not assertions that bite . A line crossed by a test that asserts nothing useful counts as much as a line genuinely verified. So a 90% coverage report can hide half a suite of tests that will never fall, even if you break the code on purpose. That's exactly an LLM's playground. Its reward signal is "the tests pass". Not "the tests catch a bug". With no external oracle to stop it, it drifts toward the shortest path to green: soft assertions, mocks that test themselves, cases that never exercise the risky branch. The red-check: break the code, demand the red The counter is one move, and it's as old as TDD: before trusting a test, check that it knows how to fail. Mutate the line it's meant to protect, rerun, and expect to see it go red. If it stays green, it's vacant. On our funct

I am looking for a permanent solution to streamline my business communications - sending bulk messages, handling customer chats, creating tickets like in any crm and possibly to integrate calling option as well. I have found gupshup.ai but they are not catering to small businesses. submitted by /u/Recent_River_7934 [link] [留言]

Why Knowledge Alone Doesn't Create Judgment Karpathy's LLM Wiki is brilliant. You dump raw material in, an LLM extracts concepts and links them together, and you get a personal knowledge base that actually works. I built one. 100+ pages. It's great. But I hit a wall that made me rethink everything. The Wall I asked my AI to act as a programming tutor. It could recite every concept perfectly. Student: "I don't understand Promises." AI: "A Promise is an object representing the eventual completion or failure of an asynchronous operation..." Wrong answer. The right answer was: "Do you understand callbacks first? What about synchronous execution? What have you tried so far?" The AI had knowledge. It had zero judgment. And then I realized why: every single page in my wiki was the same type of knowledge. One Type vs Four LLM Wiki 1.0 stores declarative knowledge — facts, definitions, summaries. Things that answer "What is this?" But think about what makes a human expert different from a textbook: A great programming mentor doesn't just know what Promises are. They know why you teach callback → Promise → async/await in that exact order — and never the reverse. That's not a fact. It's a reasoning path. A master astrologer doesn't just know what each star represents. They know why you check 命宮 first, then 三方四正, when to prioritize 格局, when a palace is a consequence rather than a cause. That's not a fact either. It's a decision sequence. And here's the kicker: even knowing the reasoning path isn't enough. We annotated Anderson's (1972) Socratic tutoring dialogues — full 41-turn and 30-turn conversations, labeling every decision point. Knowing the 23 Socratic rules (the reasoning path) is one thing. Reading a complete dialogue — watching the expert set a trap, wait 15 seconds in silence, break their own rules when the student gets frustrated — is something else entirely. Knowing the recipe ≠ having watched the chef cook. And there's still one more type. Student says: "I have no

Open your browser DevTools and run this: const user = { name : " Bob " } console . log ( user ) user . name = " Alice " You would expect the log to show { name: "Bob" } , the value at the time of the console.log call. The collapsed line is what you expect: ▶ Object { name: "Bob" } But expand it, and you will see: name: "Alice" Oops. So what's going on? console.log() is the most-used debugging tool in JavaScript, but it can be subtly unreliable. Not because it is broken, but because it optimizes for speed and interactivity rather than for accuracy . It was built for fast exploration in a live, interactive environment, and those priorities come with tradeoffs that can genuinely mislead you during debugging. Over the next sections, we'll look at a few ways the console can mislead you - and, more importantly, why each one exists. Objects Aren't Snapshots When you pass an object to console.log() in browser DevTools, the browser does not immediately serialize it into a string. Instead, it stores a live reference to that object and defers the actual rendering until you expand the entry. This is called lazy evaluation, and it is what caused the surprise. The collapsed ▶ Object you see is essentially a placeholder: the properties shown inside it are evaluated at the moment you click the arrow, not at the moment you called console.log() . By then, your code has already continued running. That means what you're seeing is not a frozen record of the object at the time of logging, but a live view into whatever the object happens to look like when DevTools renders it. In the example: You log { name: "Bob" } DevTools stores a reference to the user object The code continues executing user.name is mutated to "Alice" You expand the logged object later and see the current state This behavior can feel unintuitive at first, because most developers mentally model console.log() as "print this value right now", but in browser DevTools, it is closer to "show me this object as it exists when

submitted by /u/Muigetsu [link] [留言]

This is The Stepback, a weekly newsletter breaking down one essential story from the tech world. For more news about the streaming industry, follow Emma Roth. The Stepback arrives in our subscribers' inboxes at 8AM ET. Opt in for The Stepback here. How it started Streaming was once a reprieve from cable. Not only could […]

As the billionaire class gets richer, the growing online community is offering tips on how to survive with very little.

— โคลงสี่สุภาพ ว่าด้วยสามภาษาแห่งการสร้างเว็บ — HTML — โครงสร้าง <html> เปิดทางฟ้า ประกาศ <head> ซ่อนนัยน์นาถ นามนี้ <body> ร่างกายปราศ ซึ่งชีวิต ทุกแท็กเปิดปิดที่ หล่อหล่อมความจริง CSS — ความงาม สีสันลอยลิบฟ้า แต่งแต้ม ตัวอักษรเรียงแถม ถ้วนถี่ ขอบเขตเว้นระยะแย้ม เผยโฉม ทุกพิกเซลที่ปรี่ ปรุงแต่งให้งาม JavaScript — ชีวิต เมื่อคลิกนิ้วหนึ่งครั้ง โลดแล่น ฟังก์ชันทำงานแย้ม ยามใช้ if else ตรรกะแจ่ม จักรกล ทุกบรรทัดที่ให้ ชีวิตแก่หน้าเว็บ สามภาษา — หนึ่งเดียว html คือร่างให้ โครงครัน css แต่งแต้มฝัน สวยหรู javascript พลิกผัน ให้เคลื่อนไหว สามภาษาคู่ฟู ฟื้นฟูโลกา — Nokka | มิถุนายน 2569 เชิงอรรถ: โคลงสี่สุภาพบทนี้ใช้ฉันทลักษณ์มาตรฐาน — บทละ 4 บาท บาทละ 2 วรรค วรรคหน้า 5 พยางค์ วรรคหลัง 2 พยางค์ สัมผัสบังคับระหว่างวรรคท้ายของบาทที่ 1, 2, 3 กับวรรคแรกของบาทถัดไป เนื้อหากล่าวถึงสามเทคโนโลยีหลักของการพัฒนาเว็บไซต์ในฐานะ "กาย — ใจ — วิญญาณ" ของทุกหน้าเว็บ

Building an HSK Speaking Test AI: Real-time Tone Grading with Gemini I built a free Mandarin speaking assessment tool that grades tone + grammar in real time. Here's the engineering behind it. The Problem HSK (Chinese proficiency test) has a speaking component (HSKK), but most learners can't self-assess their level. Online tutors are expensive. Generic AI conversation tools don't grade tones. So I built ToneTutor: a 3-minute spoken-HSK test that estimates your speaking level and identifies weak points. The Tech Stack Frontend: Web Audio API (record user voice → PCM → LINEAR16) React + TypeScript (real-time transcript display) Backend: FastAPI (Python) on Google Cloud Run Gemini 2.5 Flash (real-time conversation + transcript grading) Firestore (user sessions + results) The Challenge: Web Audio API records as WebM. Gemini expects LINEAR16 (WAV). iOS Safari doesn't support WebM. So: Transcode WebM → PCM in browser (Web Audio context) Send raw PCM bytes to backend Backend wraps PCM in WAV header → sends to Gemini Speech-to-Text Gemini analyzes transcript + provides HSK level estimate The Grading Loop python async def grade_session(transcript: str): prompt = """ Rate this Mandarin response on HSK 1-6 scale. Assess: tone accuracy, grammar, vocabulary range. Provide: level estimate + weak points. """ response = await gemini.generate_content(prompt, stream=True) return parse_hsk_level(response) Results - 3-min test - Real-time feedback - Shareable HSK score card - Free (limited sessions) Open source coming soon. Built because I'm a native speaker + voice actor frustrated with generic tools. Try it: tonetutor.tefusiang.com (free for 3 sessions) Curious about the speech-to-text pipeline or tone grading logic? Ask below.

Hello again, DEV Community!I recently shared my project, Jesse Math Rock Star, and the feedback from this community has been incredibly supportive.For those who don't know me, I am 11 years old. I started coding with Scratch when I was 8, and I built this production web app using self-explored vibe coding, Google's Gemini models (via AI Studio), and Vercel!Looking at my analytics, 61% of my visitors are using mobile phones, mostly Android. I want to make sure the app feels perfect and fun for kids my age to use on small touchscreens.Could you do me a quick favour?Open the app on your phone: https://jesse-math-rockstar-app.vercel.app/ a quick round of math.Leave a comment below with your advice on the user interface (UI) and layout!Thank you all for being such a safe and helpful community for early-career builders! ( https://jesse-math-rockstar-app.vercel.app/ )

It all started on June 23rd with a casual post about a VPS Manager benchmark. Out of curiosity, I decided to ask the author of the benchmark, Pascal CESCATO Follow Full-stack dev sharing practical guides on WordPress, n8n automation, AI tools, Docker & self-hosting. Always experimenting with new tech to make life easier. , if he had tried Cloudflare's new Workers AI offering—specifically Kimi K2.7, a massive 1-trillion parameter MoE (Mixture of Experts) model that was incredibly cheap ($0.27 per million input tokens) and highly capable at code generation. Pascal was intrigued. He pointed out a brilliant hypothesis: if a model makes significantly fewer mistakes, the total session cost drops dramatically even if the per-token price is higher. He cited GLM 5.2 as a model that self-corrected multiple bugs during verification to achieve 37/37 tests passing. Curiosity got the better of me. I spun up my development environment, wrote a custom agent harness, and ran it on Kimi K2.7 using Cloudflare Workers AI. The V.E.L.O.C.I.T.Y.-OS Series Table of Contents We are building a bare-metal, self-healing operating system running entirely inside the CPU's L3 cache. Here is the roadmap for this 12-part series: Part 1: The Spark — Exposing the "Safe-Room" security leak and building the compiler gate. (You are here) Part 2: The NDA Language — Designing a content-addressed triplet representation to cure context bloat. Part 3: Ditching the Web Stack — Building a native 30MB IDE with 1,500,000x IPC latency drops. Part 4: The Closure JIT — Compiling AST blocks to nested closures and bypassing borrow checker limits. Part 5: JIT Math Optimizations — Replacing division operations with precomputed 16-bit lookup tables. Part 6: x86-64 Assembler & SCEV-Lite — Compiling scalar loops directly to native code in constant time. Part 7: Classic Compiler Passes — Implementing inter-procedural Dead Code Elimination and loop unrolling. Part 8: Reclaiming Ring 0 — Exiting UEFI boot services and transi

If you have built an estimate in the AWS Pricing Calculator by hand, you know the drill. Open calculator.aws, search a service, click in, stare at twenty fields half of which you do not need, guess at the ones the form does not explain, pick a region, repeat for every service. Then redo the whole thing next week when the customer asks what it looks like in Frankfurt. For presales that is not a small annoyance. It is the gap between giving a number on the call and saying "let me get back to you." I wired the AWS Pricing Calculator MCP into Claude, and the first real estimate I built took one sentence. What it is An MCP server - an AWS Samples project - that exposes the Pricing Calculator as tools an agent can call. You describe the workload, the agent assembles the estimate, the server saves it to the real calculator, and you get a shareable calculator.aws URL back. Same link you would have built by hand, minus the form. Three things make it usable in front of a customer: No AWS credentials. It hits the public, unauthenticated calculator.aws endpoints. You are not pointing it at an account or assuming a role. There is no blast radius. Live definitions. It pulls the calculator manifest at runtime - about 436 services - so it is current, not a snapshot from six months ago. Real, editable estimates. The URL it returns opens in the actual calculator. Tweak it, send it, whatever. The agent just did the boring part. It runs over stdio for local clients like Claude Desktop, Kiro, and Cursor, or over HTTP ( MCP_TRANSPORT=http ) if you want it hosted. It also handles the aws-iso and aws-eusc partitions, which matters for sovereign and regulated work. Context is the whole job The honest part: it is amazing when you feed it the right context . Ask for "an estimate for a web app" and you get back a web app someone else imagined. The calculator never knew your traffic - you did. The MCP does not change that. What it changes is the translation. Once you know the shape - two m5.lar

You know the drill. You build a beautiful set of shadcn/ui components for Project A — a Button, a Card, a Dialog with custom animations. Then Project B kicks off. You copy the files over. Then Project C. Then a subtle bug is found in the Button. Now you're patching it in three places. This is the classic monorepo problem, and it's exactly what I set out to fix. What I Built turborepo-react-shadcn-starter is a production-ready monorepo template that wires up: Turborepo for workspace orchestration and intelligent build caching React + Vite for the fastest possible frontend dev experience shadcn/ui as a shared package — write once, use everywhere TypeScript across the entire workspace ESLint with shared config baked in The key insight: shadcn/ui lives in @repo/ui , a shared package, not inside any single app. Every app in your monorepo consumes the same components from the same source of truth. The Problem with Typical Setups Most teams drop shadcn/ui directly into a single app. That works fine until you need a second app. Then your choices are: Copy-paste the components → drift and duplication immediately Publish to npm → versioning overhead for internal code Monorepo with a shared package → ✅ This is the right answer Turborepo makes option 3 near-effortless, but setting it up from scratch (workspace configs, TypeScript path aliases, ESLint sharing, shadcn CLI pointing at the right package) takes a few hours of trial and error. This starter eliminates all of that. What's Inside turborepo-react-shadcn-starter/ ├── apps/ │ └── web/ # Vite + React app ├── packages/ │ ├── ui/ # @repo/ui — shared shadcn/ui components │ ├── eslint-config/ # @repo/eslint-config │ └── typescript-config/ # @repo/typescript-config ├── turbo.json └── package.json apps/web — The Main App A clean Vite + React app already wired to consume components from @repo/ui . No boilerplate to delete, no config to untangle. packages/ui — The Shared Component Library This is where all your shadcn/ui components

I’ve always been fascinated by PDFs. They look simple on the surface. Just a document you can open anywhere but underneath they’re a full layout engine, object graph, drawing model, and archival format all at once. I enjoy that mix of precision and complexity and that is exactly what led me to build PDF::Make (and yes I had some help from Claude LLM). I wanted a fully featured toolkit that could both generate PDFs and let me inspect/edit them programmatically. At the low level, PDF::Make exposes the raw building blocks of the format: PDF objects, pages, the drawing canvas, a parser/reader, and import/merge primitives. This is the layer you reach for when you need fine grained control or want to work with the structure of a document directly. For everyday document creation, PDF::Make::Builder sits on top of that foundation and provides a higher level API. It handles the boilerplate of page setup, fonts, text flow, and layout so you can produce a polished PDF in just a few lines of Perl. The same toolkit is also designed for post-processing. You can open an existing PDF, extract structured text along with its coordinates, and then draw annotations or overlays back onto the page, making it straightforward to build review, QA, or markup workflows on top of documents you didn’t originally generate. This post shows a practical two-step flow: Create a PDF Re-open it, extract text coordinates, and draw border highlights around matched words 1) Create a PDF with PDF::Make::Builder Script: #!/usr/bin/perl use strict ; use warnings ; use PDF::Make:: Builder ; my $pdf = PDF::Make:: Builder -> new ( file_name => ' source_demo.pdf ', configure => { text => { font => { family => ' Helvetica ', size => 12 , colour => ' #222222 ' }, }, }, ); $pdf -> add_page ( page_size => ' Letter ') -> add_h1 ( text => ' PDF::Make blog demo ') -> add_text ( text => ' PDF::Make builds and edits PDF files directly from Perl. ') -> add_text ( text => ' In the next step we extract text coordinates and

The Euclid space telescope's stunning photo of our galaxy's “crowded heart” captures more than 60 million stars.

The Chinese supercomputer LineShine was ranked as the fastest in the world, despite not using any GPUs.