Julynx

Basic Tips - Intermediate Tips - Advanced Tips

drew-harris

import fs from "fs";
import { KarabinerRules } from "./types";
import { createHyperSubLayers, app, open, rectangle, shell, generateUnsetForEveryKey } from "./utils";
const rules: KarabinerRules[] = [
  {
    description: "Hyper Key (⌃⌥⇧⌘)",
    manipulators: [
      {
        description: "Right_CMd -> Hyper Key",
        from: {

karpathy

LLM Wiki

A pattern for building personal knowledge bases using LLMs.

This is an idea file, it is designed to be copy pasted to your own LLM Agent (e.g. OpenAI Codex, Claude Code, OpenCode / Pi, or etc.). Its goal is to communicate the high level idea, but your agent will build out the specifics in collaboration with you.

The core idea

Most people's experience with LLMs and documents looks like RAG: you upload a collection of files, the LLM retrieves relevant chunks at query time, and generates an answer. This works, but the LLM is rediscovering knowledge from scratch on every question. There's no accumulation. Ask a subtle question that requires synthesizing five documents, and the LLM has to find and piece together the relevant fragments every time. Nothing is built up. NotebookLM, ChatGPT file uploads, and most RAG systems work this way.

jboner

Latency Comparison Numbers (~2012 except when noted)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

akash-gajjar

[Redhat recommends][redhat-swap-link] swap should be at-least 1.5-2x size of available ram. Having low swap can result in degraded system performance when ram usage is high, to further increase the swap size we can take below steps

Below commands should be executed as root

1. Create Swap file of 25GB

dd if=/dev/zero of=/swapfile1 bs=1024M count=25

bcherny

Notes on Martin Kleppmann's excellent Designing Data-Intensive Applications.

Chapter 1: Reliable, Scalable, and Maintainable Applications

• Data Systems
  • Dimensions to consider when thinking about data systems: access patterns, performance characteristics, implementations.
  • Modern data systems often blur the lines between databases, caches, streams, etc.
• Reliability
  • Systems should perform the expected function at a given level of performance, and be tolerant to faults and user mistakes
• Fault: One component of a system deviating from its spec. Prefer tolerating faults over preventing them (except for things like security issues). Faults stem from hardware failures, software failures, and human error (in a study, config errors caused most outages).

bruxx-6243

🐞 Atelier de débogage JavaScript — Task Manager

Niveau : Débutant → Intermédiaire Langage : JavaScript Format : 5 exercices progressifs Thème : Identifier, comprendre et corriger les erreurs dans le code d'un gestionnaire de tâches

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📌 Présentation

MotherSphere

NIKKE PC launcher compromise (November 2026)

한국어 번역 (Korean translation): nikke-pc-launcher-compromise_ko.md

Caution

From 2026-09-27, four official JavaScript files on Level Infinite's CDN contained attacker code. The NIKKE PC launcher loads these files. From Oct 23 at the latest, opening the launcher could install a remote-control agent: while the launcher was open, the attacker could run any command on your machine, read any file and take screenshots.

Update, 2026-11-03 22:40 GMT: three of the files were replaced on Nov 3 at 17:04, 17:13 and 17:21 GMT. The fourth, FeedList.feb647c9.js, was cleaned at the origin on Oct 28, but two CDN servers still delivered the modified copy at 22:26 GMT. The attacker's server no longer answered at 18:31 GMT. None of this undoes anything on machines that were already infected, and the old files may still be in your launcher's cache. **Do not open the NIKKE PC launcher until Level Infinite confirms the fix,

miketartar

import json

import sqlite3

import os

DB_PATH = "C:/ProgramData/Cold Turkey/data-app.db"

def activate():