Gurpartap Singh Gurpartap

Beast Mode

Beast Mode is a custom chat mode for VS Code agent that adds an opinionated workflow to the agent, including use of a todo list, extensive internet research capabilities, planning, tool usage instructions and more. Designed to be used with 4.1, although it will work with any model.

Below you will find the Beast Mode prompt in various versions - starting with the most recent - 3.1

Installation Instructions

Go to the "agent" dropdown in VS Code chat sidebar and select "Configure Modes".
Select "Create new custom chat mode file"

The Ultimate Swift Testing Playbook (2024 WWDC Edition, expanded with Apple docs from June 2025)

Updated with info from https://developer.apple.com/documentation/testing fetched via Firecrawl on June 7, 2025.

See also my blog: See also my blog post: https://steipete.me/posts/2025/migrating-700-tests-to-swift-testing

A hands-on, comprehensive guide for migrating from XCTest to Swift Testing and mastering the new framework. This playbook integrates the latest patterns and best practices from WWDC 2024 and official Apple documentation to make your tests more powerful, expressive, and maintainable.

1. Migration & Tooling Baseline

Debian 13

Caution Upgrading from Debian 12 to Debian 13 on machines with mdadm has intermittently failed for me; symptom is that grub EFI is not up to date and system boots into BIOS. Root cause under investigation; it might not be related to mdadm.

To start, read the official release notes.

If your install fits into "vanilla Debian plus maybe a handful of 3rd-party repos", then this guide for a simple upgrade to Debian 13 "trixie" from Debian 12 "bookworm" can be helpful. 3rd-party repos are handled with a find command.

Note upgrade is only supported from Debian 12 to Debian 13. If you are on Debian 11, upgrade to Debian 12 first. Then once on Debian 12, you can upgrade to Debian 13.

	{
	"art_style_profile": {
	"style_name": "Modern Isometric 3D Icons – High-Fidelity",
	"visual_elements": {
	"shape_language": "Real objects reduced to smooth, softly-rounded forms with gentle bevels, yet retaining all signature sub-shapes (e.g., pasta strands individually twisted, grill marks precisely scored).",
	"colors": {
	"palette_strategy": {
	"base_hue": "Use the object’s most iconic colour.",
	"tone_triplet": "Three tones of that hue (Lightness ±18 %).",
	"pop_accent": "One high-saturation complementary / triadic hue for fun highlights.",

	/// A type-erased task that you can store in a collection
	/// to allow you to cancel at a later date.
	///
	/// Upon deinit of the task, the task will be cancelled
	/// automatically. Similar to Combine's AnyCancellable.
	final class AnyTask {

	/// Call this cancellation block to cancel the task manually.
	let cancel: () -> Void
	/// Checks whether the task is cancelled.

	CREATE FUNCTION uuid_time_nextval(interval_length int default 60, interval_count int default 65536)
	RETURNS uuid
	LANGUAGE plpgsql
	AS $$
	DECLARE
	v_i int;
	v_prefix_bytes int = 0;
	v_time bigint;
	v_bytes int[16] = '{}';
	v_hex text[16] = '{}';

	# Creates a "dummy" network interface
	# we'll configure this interface with a link-local address
	# See: https://www.freedesktop.org/software/systemd/man/systemd.netdev.html
	##

	[NetDev]
	Name=dummy0
	Kind=dummy

	//
	// ShareScreenPresentation.swift
	// RoomsController
	//
	// Created by Daniel Yang on 2019/3/15.
	// Copyright © 2019 RingCentral. All rights reserved.
	//

	import ObjectiveC
	import UIKit

	#!/bin/bash

	gdb -p "$1" -batch -ex 'set {short}$rip = 0x050f' -ex 'set $rax=231' -ex 'set $rdi=0' -ex 'cont'

	@propertyWrapper
	struct RawKeyedCodableDictionary<Key, Value>: Codable where Key: Hashable & RawRepresentable, Key.RawValue: Codable & Hashable, Value: Codable {
	var wrappedValue: [Key: Value]

	init() {
	wrappedValue = [:]
	}

	init(wrappedValue: [Key: Value]) {
	self.wrappedValue = wrappedValue