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TOTP From First Principles: Building an RFC 4226 / 6238 CLI in Rust
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DEV Community · Technology

TOTP From First Principles: Building an RFC 4226 / 6238 CLI in Rust

A small Rust CLI that generates TOTP / HOTP codes, parses otpauth:// URIs, and verifies user-supplied codes against a clock-drift window. No dependency on totp-rs or oath-toolkit. Everything — base32, HMAC wiring, dynamic truncation, URI format — is written out so you can read it. Source: https:...

SEN LLC
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Cómo crear un agente de IA desde cero. Open source, local y gratis.
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DEV Community · Technology

Cómo crear un agente de IA desde cero. Open source, local y gratis.

De un modelo que solo responde a uno que busca, razona y recuerda — con código que puedes leer, forkear y contribuir. Todos hemos usado ChatGPT, Claude, Google Gemini. Les preguntas algo, te responden. Les pides que resuman un texto, lo resumen. Les dices que escriban un correo, lo escriben. Per...

Hazel Saenz
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Allbirds announced a switch from shoes to AI and its stock jumped 600 percent
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The Verge · Technology

Allbirds announced a switch from shoes to AI and its stock jumped 600 percent

Allbirds had a hit a decade ago with its Wool Runner shoes, but after a $4 billion IPO in 2021, the business never turned a profit, and sales dropped nearly 50 percent between 2022 and 2025. The company recently announced it would sell off its name and assets for $39 million to American Exchange aft...

Richard Lawler
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How We Use the Web Crypto API to Build a Truly Fair Random Name Picker Wheel
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DEV Community · Technology

How We Use the Web Crypto API to Build a Truly Fair Random Name Picker Wheel

Most "random" wheel spinners online aren't really random. They use Math.random(), which is a pseudorandom number generator — predictable, seedable, and manipulable. For a toy, that's fine. For picking a giveaway winner in front of 10,000 viewers, or selecting which student answers a question in a...

İsmail Günaydın
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How to prompt Gemini 3.1's new text to speech model
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DEV Community · Technology

How to prompt Gemini 3.1's new text to speech model

Gemini 3.1 Flash text to speech (TTS) is a new model that you can direct to get the precise audio performance you want. In this blog post I'll share some tips on how to guide the model with prompts, and share some examples of its strengths. Out of the box gemini-3.1-flash-tts-preview will natively...

fofr
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The Hidden Cost of Running LLM Applications at Scale
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DEV Community · Technology

The Hidden Cost of Running LLM Applications at Scale

Everyone watches the model bill. You pick a model, check the pricing page, estimate your request volume, do the math. The number looks fine. You ship. Six months later the bill is three times what you expected and nobody can explain exactly where it went. I have been there. And after building m...

ROHITH SARGUNAN
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The Claude Code Skill Set I Actually Run — Mapped by Dev Task
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DEV Community · Technology

The Claude Code Skill Set I Actually Run — Mapped by Dev Task

A type error detonated five minutes before deploy. Claude had just declared "completed." I trusted the line and hit vercel --prod. Preview was green; the Production build failed. Four hotfix commits later, the evening was gone. Without that incident, I wouldn't have bothered organizing my Skills. T...

LazyDev_OH
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Peace activist, 91, walks across Ireland in protest against US military stopovers
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The Guardian · World

Peace activist, 91, walks across Ireland in protest against US military stopovers

Lelia Doolan, who finished 220km trek at parliament gates, says use of Shannon airport violates Irish neutralityA 91-year-old peace activist has crossed Ireland on foot and arrived in Dublin to petition the government to bar US military flights.Lelia Doolan completed a two-week, 220km (138 mile) tre...

Rory Carroll Ireland correspondent
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2026 NSTA Hyperwall Schedule
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NASA Breaking News · Science

2026 NSTA Hyperwall Schedule

NASA Science at NSTA Hyperwall Schedule, April 16-18, 2026 Join NASA in the Exhibit Hall (Booth #1265) for Hyperwall Storytelling by NASA experts. Full Hyperwall Agenda below. THURSDAY, APRIL 16 11:00 AMTeaching Space Weather in the Artemis Mission EraChristina Milotte11:15 AM5E StoryMaps using NASA...

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Show HN: Libretto – Making AI browser automations deterministic
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Hacker News · Technology

Show HN: Libretto – Making AI browser automations deterministic

Libretto (https://libretto.sh) is a Skill+CLI that makes it easy for your coding agent to generate deterministic browser automations and debug existing ones. Key shift is going from “give an agent a prompt at runtime and hope it figures things out” to: “Use coding agents to generate real scripts yo...

muchael
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