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Closures a fondo en JavaScript
1+ hour, 17+ min ago (998+ words) Un closure es la combinación de una función agrupada dentro de otra con referencias a su estado adyacente. Veamos el siguiente ejemplo para entenderlo un poco mejor: Esto como te puedes imaginar, podía causar bugs muy complicados de encontrar. Con…...
Externum launches today: one typed source Python, Bash or bytecode (with honest benchmarks)
3+ hour, 39+ min ago (206+ words) One statically typed source compiles to readable CPython, a standalone set -euo pipefail bash script, or a source-less bytecode artifact. The compiler is written mostly in itself, bootstrapped from a 6.4 KB Python stub. Today Externum is launching (Show HN + DevHunt…...
Mech Interp is a Verifiable Task — LessWrong
4+ hour, 53+ min ago (548+ words) If we think parts of MLP0-MLP3 are computing [a sorting algorithm], we can replace those parts with [a sorting algorithm] and check reconstruction lo…...
Single-File vs. Modular Code: Which Breaks LLMs Less? (a miserably failed experiment)
5+ hour, 33+ min ago (339+ words) For us, modular code is simply easier because of our limited working memory and reading speed. If you... Tagged with ai, programming, productivity, discuss....
ES2026 Shipped. I Deleted Four Helpers.
2+ hour, 26+ min ago (20+ words) Array.fromAsync, Error.isError, Map.getOrInsert, Math.sumPrecise. I deleted four helpers, ran them on Node 24, and checked whether TypeScript knew their names....
Rust Team Members and Popular Crate Owners Targeted via Video Calls
6+ hour, 47+ min ago (458+ words) It’s unclear if the attacks are part of previous campaigns against Rust, but the techniques used by the attackers match those used by North Korea. The Rust project warned last week that an ongoing social engineering campaign is targeting Rust-lang…...
Exoroute: An AI router built with rust
9+ hour, 54+ min ago (22+ words) I previously used Omniroute, but it consumed over 2.8 GB of RAM for just 11 connections;... Tagged with ai, rust, opensource, apigateway....
Who Decides the Tenant? A Small Rust Guard for AI Tool Calls
18+ hour, 4+ min ago (622+ words) I have been thinking about a fairly ordinary failure mode in AI-enabled SaaS products. A support... Tagged with rust, ai, security, showdev....
dbt Core v2.0 Just Rewrote Itself in Rust — Here’s What Actually Breaks When You Migrate
14+ hour, 35+ min ago (31+ words) A Rust engine, a Fivetran merger, and 22 GitHub issues later — here’s what the migration guide …...
Overpatch and Heapjack: Two Techniques for Bypassing Codex's Write Restrictions and Escaping Its Read-Only Sandbox
19+ hour, 13+ min ago (1542+ words) 1. Basic Information Original Title: Escaping the OpenAI Codex sandbox, twice Source: Accomplish AI Published: 2026-09-15 Updated: None Severity: High Basis for Severity: Researchers verified Overpatch, which writes outside the workspace using workspace-write, and Heapjack, which executes host commands from the strictest…...