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@dkaraush
dkaraush / oklch2rgb.js
Last active December 15, 2025 02:15
conversion OKLCH into RGB and RGB into OKLCH in js, simplified
const multiplyMatrices = (A, B) => {
return [
A[0]*B[0] + A[1]*B[1] + A[2]*B[2],
A[3]*B[0] + A[4]*B[1] + A[5]*B[2],
A[6]*B[0] + A[7]*B[1] + A[8]*B[2]
];
}
const oklch2oklab = ([l, c, h]) => [
l,
@seibert
seibert / dbldbl.h
Created July 2, 2013 23:19
Version 1.2 of NVIDIA's double-double arithmetic header, distributed in accordance with its BSD License.
/*
* Copyright (c) 2011-2013 NVIDIA Corporation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
@marckohlbrugge
marckohlbrugge / GUIDE.md
Created December 14, 2025 02:52

The Unofficial 37signals/DHH Rails Style Guide

About This Document

This style guide was generated by Claude Code through deep analysis of the Fizzy codebase - 37signals' open-source project management tool.

Why Fizzy matters: While 37signals has long advocated for "vanilla Rails" and opinionated software design, their production codebases (Basecamp, HEY, etc.) have historically been closed source. Fizzy changes that. For the first time, developers can study a real 37signals/DHH-style Rails application - not just blog posts and conference talks, but actual production code with all its patterns, trade-offs, and deliberate omissions.

How this was created: Claude Code analyzed the entire codebase - routes, controllers, models, concerns, views, JavaScript, CSS, tests, and configuration. The goal was to extract not just what patterns are used, but why - inferring philosophy from implementation choices.

@MohamedElashri
MohamedElashri / jupyter_tmux.md
Created October 9, 2024 16:40
Running a Long-Running Jupyter Notebook Remotely using tmux

Running a Long-Running Jupyter Notebook Remotely using tmux

Step-by-Step Instructions:

  1. Start tmux Session
    • Connect to your remote server via SSH: 
      ssh user@remote-server
  • Start a tmux session to keep your terminal session active even after disconnection:
@MDX-Tom
MDX-Tom / Readme.md
Last active December 15, 2025 02:02
Bruteforce 4-digit passcode on iPhone 5 iOS 9~10 via SSH Ramdisk

Bruteforce 4-digit passcode on iPhone 5 iOS 9~10 via SSH Ramdisk

Here is a guide for automatically bruteforcing 4-digit passcodes on iPhone 5 using only a computer and a USB cable (without an MFC Dongle). My device is iPhone5,2 (iPhone 5 Global) iOS 9.2 (FMI OFF), the steps below may work on other 32-bit devices or other iOS versions (see below for tested working devices and iOS versions), but shall not work on any 64-bit devices.

See https://www.reddit.com/r/setupapp/comments/1ha2arg/bruteforce_4digit_passcode_on_iphone_5_ios_9_via/ for discussions.

Updated 10 Jan. 2025:

A more powerful guide for bruteforcing 32-bit devices was released by a reddit user: https://www.reddit.com/r/setupapp/comments/1hw5bfa/bruteforcing_32bit_iphones_ondevice_4_digit_pin/

@parrot409
parrot409 / _writeup.md
Created December 14, 2025 17:05
Impossible Leak - SECCON 2025 Quals

XS Leaks using disk cache grooming

The admin bot creates a new browsing context with createBrowsingContext() and uses that to create a page. Each browsing context should have a dedicated disk cache but how does chrome handle this? I deduced that it uses in-memory disk cache and it's much smaller than the default on-disk disk cache. The incognito tab of my browser has the same behavior.

The following page alerts "not cached" due to cache miss in incognito mode but no error happens in a regular tab.

$ head /dev/urandom -c 5242880 > chunk
$ cat <<EOF > index.html
@rvrsh3ll
rvrsh3ll / windows-keys.md
Created February 18, 2024 22:44
Windows Product Keys

NOTE

These are NOT product / license keys that are valid for Windows activation.
These keys only select the edition of Windows to install during setup, but they do not activate or license the installation.

Index

@aamiaa
aamiaa / CompleteDiscordQuest.md
Last active December 15, 2025 02:02
Complete Recent Discord Quest

Complete Recent Discord Quest

Note

This does not works in browser for quests which require you to play a game! Use the desktop app to complete those.

How to use this script:

  1. Accept a quest under Discover -> Quests
  2. Press Ctrl+Shift+I to open DevTools
  3. Go to the Console tab
  4. Paste the following code and hit enter:
@d7samurai
d7samurai / .readme.md
Last active December 15, 2025 01:56
Minimal D3D11

Minimal D3D11

Minimal D3D11 reference implementation: An uncluttered Direct3D 11 setup + basic rendering primer and API familiarizer. Complete, runnable Windows application contained in a single function and laid out in a linear, step-by-step fashion that should be easy to follow from the code alone. ~200 LOC. No modern C++, OOP or (other) obscuring cruft. View on YouTube

hollowcube

Other gists in this series:

@Chenx221
Chenx221 / vs_26_22_19_17_dl.md
Last active December 15, 2025 01:56
Visual Studio 2026/2022/2019/2017 Web Installer Direct download link