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ProgrammingDEV Community ·

Navigating with Vector Trigonometry: Why the E6B Wind Triangle Works (and Where 60:1 Rules Fail)

In aviation navigation, an aircraft never travels along the heading its nose is pointed unless the ambient wind is dead calm or directly aligned with the track. Every pilot learns to solve the Navigational Wind Triangle—the closed velocity vector triangle balancing True Airspeed (TAS), Wind Velocity (W), and resultant Groundspeed (GS). In this technical breakdown, we derive the closed-form Law of Sines Wind Correction Angle (WCA), implement a deterministic calculation engine in TypeScript, and analyze where cockpit mental heuristics (like the 60:1 rule and clock code) diverge from physical rea

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ProgrammingDEV Community ·

Show r/typescript: Chronera – zero-dep TS date engine with RFC 9557, Temporal ZonedDateTime, multi-cultural calendars

Hey everyone! 👋 Working with dates in JavaScript has always been notoriously tricky. While TC39 Temporal is exciting, full engine availability is still on the horizon. Meanwhile, handling multi-cultural calendars (Buddhist, Hijri, Solar) and cross-border settlement holidays often requires heavy polyfills or fragile custom math. Over the past few weeks, our team built Chronera — an immutable, type-safe date, calendar, and timezone toolkit written strictly in TypeScript with Zero Runtime Dependencies.

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ProgrammingDEV Community ·

Meta VR Glasses

Coding for the Human Eye: My Experience with Dichoptic VR Whenever a new piece of hardware drops—like the recent Meta VR glasses—the developer community immediately dives into the specs. We talk about latency, field of view, and spatial mapping. But lately, I've been thinking about a different kind of implementation: how we can use spatial precision to solve biological limitations. I’ve lived with amblyopia for most of my life. If you’re not familiar, it’s essentially a “lazy eye” where the brain ignores input from one eye.

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ProgrammingDEV Community ·

I compared 1,489 eSIM plans in 199 countries. Price per GB varies 105x

Disclosure: we run Bitcall, which sells travel eSIMs. The prices below come from our own catalogue, so read them as one provider's prices on one date, not a survey of the market. We wanted to answer a simple question: how much does mobile data cost a traveller around the world? We had the data on our own site, so we turned it into a small price index. Here is how it works, with the code and a few things that surprised us.

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ProgrammingDEV Community ·

I Built an AI 3D WebGL Portfolio Generator That Gives You Full Source Code Export

Hey everyone! 👋 Like many developers, I noticed a frustrating tradeoff when creating a technical portfolio: Option A: Spend 40+ hours coding a custom website from scratch and maintaining it whenever you finish a new project. Option B: Use generic website builders that give you flat 2D templates, charge high monthly fees, and lock your code inside proprietary walled gardens. To solve this, I built MyFolio — an AI-powered 3D spatial portfolio generator that transforms your GitHub repositories and PDF resume into an interactive 3D WebGL website in under 60 seconds, with 100% standalone source co

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ProgrammingDEV Community ·

What is Ethereum zkAPI? A zero-knowledge proof is not a payment authorization

What is Ethereum zkAPI? A zero-knowledge proof is not a payment authorization On October 1, 2026, the Ethereum Foundation and the Open Anonymity Project launched zkAPI — live on Ethereum mainnet. Deposit ETH or USDC into a vault, sign a zero-knowledge proof, receive a temporary API key with a predetermined spending cap, and pay for AI models and metered APIs without revealing who you are. "Every AI API call today carries an identity," the announcement post said. "Your API key points to an account, the account to a payment method, and every prompt you send joins the record attached to both.

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ProgrammingDEV Community ·

El que construye la IA es el que más la teme. Y tiene razón

El hombre que dirige una de las IAs más potentes del mundo dice que hay un 25 % de probabilidad de que las cosas salgan muy, muy mal, y en septiembre de 2026 fue más lejos: "durante demasiado tiempo la industria le mintió a la gente sobre el hecho de que esta tecnología tiene riesgos". No lo dice un crítico externo. Lo dice Dario Amodei, el que la construye. Y ahí está la pregunta incómoda: ¿por qué el que está más cerca es el que más miedo tiene? La respuesta no es la de las películas.

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ProgrammingDEV Community ·

Watermark Creator Portfolio Images Before Public Display While Keeping Originals Private

Short answer: Keep original creator portfolio images private, moderate them first, then publish a watermarked derivative with a separate access policy. A health app that displays creator portfolio images has two separate obligations: moderate the upload and protect the source file. The practical choice is to keep the original in a private store, run moderation before publication, and generate a watermarked derivative only after the decision is recorded. That ordering limits accidental disclosure and makes a failed transform recoverable. The watermark is a presentation control, not a moderation

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ProgrammingDEV Community ·

Yield Strategy Optimization Report: Sky Lending

Yield Strategy Optimization Report: Sky Lending Target Protocol: Sky Lending (TVL: $5872.8M) Yield Strategy Optimization Report – Sky Lending Prepared by: [Your Firm / Senior DeFi Security Researcher] Date: 2 Oct 2026 Sky Lending is a permission‑less, over‑collateralised lending protocol deployed on Ethereum and multiple L2 roll‑ups (Optimism, Arbitrum, zkSync). As of the latest snapshot (02‑Oct‑2026) the platform manages ≈ $5.88 B in total value locked (TVL), with ~70 % on Ethereum L1 and the remainder spread across L2s. The protocol’s core value proposition is a dynamic yield‑optimization en

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ProgrammingDEV Community ·

‘The Pitt,’ ‘Hacks’ and ‘Beef’ Among Astra TV Awards Winners

2026 아스트라 TV 어워즈(Astra TV Awards)에서 '더 피트(The Pitt)'가 드라마 부문 6관왕을 차지했습니다. '핵스(Hacks)', '비프(Beef)' 등도 수상의 영예를 안았죠. 의료 드라마가 강세를 보인 올해, 개발자 관점에서 눈에 띄는 건 '시청 기술이 건강 기술로 확장되는 지점'입니다. 약시(amblyopia, lazy eye)·시각 협응 장애 사용자를 위한 VR 앱, 앰블리튜브(Amblyotube)가 메타 퀘스트 스토어에 올라와 있습니다. 엔진/런타임: Unity + Meta XR SDK — 최신 OpenXR 백엔드와 퀘스트 전용 런타임을 활용해 크로스‑디바이스 배포를 단순화.

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ProgrammingDEV Community ·

Hiring managers skim in six seconds, then reread

Why the first glance matters Hiring managers spend only a handful of seconds on any new application. In that fleeting moment they are looking for a signal that the candidate aligns with the role. If the signal is missing, the document is set aside without a second look. The decision at this stage is pure triage: does the resume earn the right to be examined more closely, or does it join the pile of forgotten submissions? Because the initial pass is so brief, the layout and phrasing of the opening lines become the most important piece of the communication puzzle.

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ProgrammingDEV Community ·

Google Unveils Gemini 4 Argon With 1 Million Token Context and Cybersecurity Focus

Google has officially introduced Gemini 4 Argon, the next frontier model in its Gemini lineup. The model is positioned for high-value work in software engineering, knowledge-intensive business tasks, defensive cybersecurity, and multimodal analysis and creation. Its most consequential technical specification is support for up to 1 million tokens of context, alongside introductory token-based pricing and a phased rollout that begins with trusted cyber defenders. In Google's official Gemini 4 Argon announcement, the company describes Argon as a model intended to handle longer-running, more compl

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