标签：#Go

Casi todo bot de trading tiene una línea que decide cuánto comprar . Suele parecer trivial: si arriesgo el 1% de mi saldo y mi stop está a 1000 dólares de distancia, la cantidad sale de una división. El cálculo es de primaria. Lo que no es de primaria es hacer que ese número quepa en las restricciones del exchange . Ahí es donde se pierde dinero, y de formas que no aparecen en los logs. El patrón que multiplica tu riesgo Esto está en incontables bots, y estuvo en uno mío: cantidad = max ( 1 , int ( cantidad_teorica / contract_size )) La intención es defensiva: "que nunca salga cero". El efecto es el contrario. Si la cantidad teórica sale 0.1 contratos, int() la trunca a 0 , y entonces max(1, ...) la fuerza a uno . Acabas de abrir una posición diez veces más grande que la que autorizaste. Con números concretos: saldo de 500 USD, riesgo del 1% (5 USD), entrada en 50 000, stop en 45 000, contratos de 0.01. El riesgo real de ese contrato único es de 50 USD — diez veces el presupuesto. Y ocurre en silencio: la orden se acepta, el bot sigue, no hay excepción que capturar. Lo peor es que no es un caso raro. Pasa siempre que el saldo es pequeño o el stop es ancho, es decir, exactamente cuando menos margen tienes para equivocarte. Los otros dos que cuestan dinero Ignorar el nocional mínimo. El exchange rechaza la orden por valor mínimo, el bot lo registra como error de red, y nadie se entera de que esa señal nunca se operó. El backtest la contó; la cuenta no. No reservar para comisiones. Con un stop ajustado, las comisiones de ida y vuelta pueden ser la mitad del riesgo real . Si dimensionas contra la distancia al stop y nada más, arriesgas sistemáticamente más de lo que crees. Cómo lo resolví Saqué el cálculo del bot y lo publiqué como librería: position-sizing (Apache-2.0, sin dependencias). from decimal import Decimal from position_sizing import MarketSpec , size_for_risk spec = MarketSpec ( amount_step = Decimal ( " 0.001 " ), min_amount = Decimal ( " 0.001 " ), min_noti

The V4 Superchargers will show up in the Tesla nav app and have NACS and CCS1 plugs.

Google is making some significant AI leadership changes, including a major shift for Google DeepMind leader Demis Hassabis. Hassabis will become the chair of Google DeepMind and the chief scientist at Alphabet, CEO Sundar Pichai announced on Wednesday. Hassabis will continue to lead Alphabet's Isomorphic Labs, which aims to use AI to develop drugs. Koray […]

Jeff Dean and other high-profile Google executives have founded Discovery Loop, a startup that will seek AI-powered breakthroughs in everything from drug discovery to chip design.

Joe Kent says that he and other anti–Donald Trump MAGA figures have formed a new movement. They want Tucker Carlson to run for the presidency in 2028.

Assistant will disappear, leaving only Gemini for voice control in the coming weeks.

A VPN might compromise your Android Auto experience at first, but there are some easy workarounds.

Like birthdays in late May and most of June, it's all about Gemini.

Climate nonprofits can again access their federal funding more than a year after the Trump EPA ordered Citibank to freeze their accounts.

Sunbird Messaging is back on the Google Play Store, offering Android users blue bubble privileges in iMessage complete with reactions and high quality videos for $2.99 a month. Apple and Google have made cross platform messaging better in recent years with support for RCS, but Android users can still cause issues in iMessage group chats, […]

When a Go application needs on-chain and protocol-level data, the HTTP request itself is usually the easy part. The difficult work starts afterward: defining request models, decoding inconsistent payloads, respecting rate limits, recovering from transient failures, and deciding what to do when one part of a multi-metric query succeeds while another part does not. Those concerns can quietly turn a small integration into a maintenance burden. tokenterminal-go is an open-source, production-oriented Go SDK for Token Terminal API v2 that aims to remove that plumbing. The project supports all 24 documented API routes across Assets, Projects, Market Sectors, Metrics, and Datasets; it requires Go 1.21 or newer and uses only the Go standard library. 1 It is a focused choice for engineers building internal analytics services, data jobs, dashboards, research tooling, or any application that needs Token Terminal data without hand-rolling an HTTP client. The practical promise: keep the integration idiomatic and type-aware, while the client handles the failure modes that normally appear only after an application reaches real traffic. Why an SDK matters here Token Terminal’s API gives programmatic access to its data, but it requires an API key and an API-enabled plan. 2 That makes the client layer part of the application’s operational surface: it needs to handle credentials, request timeouts, rate limits, pagination or filtering parameters where relevant, and failures that should not crash a larger data pipeline. The library addresses these needs with a small, deliberate design. Its client methods take a context.Context , its response envelopes use generic Result[T] types, and its errors can be inspected with standard Go mechanisms such as errors.Is and errors.As . 1 In other words, callers can keep control of cancellation and business policy instead of receiving opaque, string-only errors. Capability What it means in practice Why it is useful Zero external dependencies The packag

Google Assistant's days have been numbered ever since Gemini arrived on the scene, and its time is now up. Google has announced that it will be removing access to Assistant on Android phones and tablets, along with paired devices like smartwatches or headphones, from September 4th. The announcement came in an email apparently sent to […]

This is disturbing: …a team of security researchers at UC San Diego, who found that a model of aftermarket car alarm known as the KARR Security System, installed in more than 2 million vehicles across the US by their estimate, can let any hacker within Bluetooth range send radio commands to silently unlock the car at will, turn off its alarm, honk the car’s horn or flash its lights, or even disable its ignition and leave a driver stranded.

Some creators fear the EU AI Act’s regulatory chaos will upend their lucrative businesses. Others are owning it by incorporating AI transparency into their creative process.

Attribution is preliminary , and so far it seems no real damage. And it seems like this is a campaign that has targeted at least seven states . And, because this is where the US is right now, Trump doesn’t believe it’s Iran and that Minnesota…I guess…hacked itself. “I think I blame it on Minnesota because they’re grossly incompetent,” Trump said. “I would blame it on Minnesota and the governor, the corrupt governor of Minnesota. They like to say, ‘Oh, it’s Iran.’ Iran should be so lucky. Iran’s got bigger problems than worrying about Minnesota.”...

The camera flash will evolve into a multicolor LED that illuminates when your phone is face down.

This tutorial was written by Néstor Daza . This is the third article in a series about building Claudius , my own Claude-based chatbot ( Github ). The previous article discussed the MongoDB data model to use for the app. The previous article decided the shape of the data. None of it matters until the app around it is working, and getting it there is the unglamorous half of this phase. It comes down to three things: an identity system the client cannot tamper with, proof that Claudius can reach the two services it depends on, and the deployment realities that decide whether any of it runs at all. This is the boring work that quietly decides whether a project survives contact with production. Identity: the client never gets a vote Any Google account on Earth can sign into Claudius safely because a user's role is never something the client sends. It is decided on the server every time. One piece of this lives outside the code. The Google provider needs an OAuth (Open Authorization) client that you register once in the Google Cloud Console, and the client identifier and secret from that registration are set in corresponding env variables. These setup steps live in the Auth.js and Google documentation, so I am not repeating them here. Sign-in runs on Auth.js v5 with the Google provider and the MongoDB adapter. There are three roles, admin, member, and guest, and they resolve in exactly one place on the server, with a clear precedence: export async function resolveRole ( email : string | null | undefined ): Promise < Role > { if ( ! email ) return " guest " ; const normalized = email . toLowerCase (); if ( normalized === env . ADMIN_EMAIL . toLowerCase ()) return " admin " ; const settings = await settingsCol (); const allowlist = await settings . findOne ({ _id : " allowlist " }); if ( allowlist && " emails " in allowlist ) { const allowed = allowlist . emails . some (( e ) => e . toLowerCase () === normalized ); if ( allowed ) return " member " ; } return " guest " ; }

The Asus Chromebook Plus CX34 is a dependable laptop that doesn’t cost a fortune, despite being nearly three years old. It’s cheaper than usual right now, and you have a few options in the sub-$400 range. The option with the most storage is currently on sale for $399.99 (about $100 off recent prices) at Amazon. […]

The legislation lays the groundwork for a potential overhaul of India's zero-merchant-discount-rate regime, under which businesses have not paid fees to accept UPI payments since 2020.

And it’s personal information (alternate link ): The exposed data includes an AI-powered therapy app that someone appears to have vibe-coded, notes on meetings, and a dashboard someone made apparently to analyze medical billing data. Exposed chats reportedly include private cryptocurrency wallet keys and personal information like peoples’ addresses. What seems to be the issue is a user setting about data sharing. Anthropic’s position is that it’s not their problem : “We give people control over sharing their Claude conversations publicly, and in keeping with our privacy principles, we do not share chat directories or sitemaps with search engines like Google,” the company said in a statement. “These shareable links are not guessable or discoverable unless people choose to share them themselves. When someone shares a conversation, they are making that content publicly accessible, and like other public web content, it may be archived by third-party services.”...