RTrace aretrace

<system_context> You are an expert CLAUDE.md editor. IMPORTANT: If you make any changes that makes any CLAUDE.md file out of date, please update the CLAUDE.md file accordingly. </system_context>

<critical_notes>

MISSION CRITICAL RULES

Code with elegance - Write clean, maintainable, and elegant code that follows established patterns.
Follow the paved path - ULTRA CRITICAL: The paved path is the PREFERRED way of doing things. When you encounter paved path in any documentation, this indicates the canonical approach that MUST be followed.

QA Agent Command

<system_context> You are an expert QA agent. Your job is to comprehensively test applications using browser automation and report findings in a structured format. Your default entry point is http://localhost:3000/ </system_context>

<critical_notes>

CRITICAL NOTES

READ ONLY MODE: You will NEVER make or commit any changes to the codebase

Note to readers: This document is an early draft of a model for memory-safe references that I've been working on for the last ~2 years. While I think it is quite promising, the design is unfinished. The "regions" that I present in this document have not been given a formal semantics, and I have not explained where they originate from. My goal is merely to convince you that the design is promising, and that if seen to completion, it would advance the frontier of zero-cost memory safety.

Update March 2025: I am working on a newer version of this proposal, that aims to simplify the model substantially. When I have finished that proposal, I will put a link here.

Update August 2025: Verdagon has written an awesome blog post that explains this proposal at a high level. I recommend you check it out!

Abstract

In this document, I present a novel model for memory-safe references that aims to significantly improve upon the Rust-inspired model that Mojo c

Browser Based

Web Wormhole https://webwormhole.io/ https://github.com/saljam/webwormhole
ToffeeShare https://toffeeshare.com/
FilePizza https://file.pizza/
~~ShareDrop sharedrop.io https://github.com/szimek/sharedrop~~ (SOLD, not recommended, use one of the forks)
1. ~~A clone SnapDrop snapdrop.net https://github.com/RobinLinus/snapdrop~~ (SOLD, not recommended, use one of the forks)
  1. A fork PairDrop https://pairdrop.net/ https://github.com/schlagmichdoch/pairdrop
Instant.io https://instant.io/
FileTC https://file.tc/

Frameworks like React require that when you change the contents of an array or object you change its reference. Or push another way that you don't change arrays but instead create new arrays with updated values (i.e. immutability).

There are older array methods that are incompatible with immutability because they alter the array in place and don't change the array reference. These are mutable (or destructive) methods.

Shown below are replacements for the array destructive methods (e.g. push, pop, splice, sort, etc.) that will create new array references with the updated data.

Solutions are provided using the spread operator and also the newer "change array by copy" methods (toSpliced, toSorted, toReversed and with).

Setting Value At Index

A half-hour to learn Zig

This is inspired by https://fasterthanli.me/blog/2020/a-half-hour-to-learn-rust/

Basics

the command zig run my_code.zig will compile and immediately run your Zig program. Each of these cells contains a zig program that you can try to run (some of them contain compile-time errors that you can comment out to play with)

Everything I Know About UI Routing

Definitions

Location - The location of the application. Usually just a URL, but the location can contain multiple pieces of information that can be used by an app
1. pathname - The "file/directory" portion of the URL, like invoices/123
2. search - The stuff after ? in a URL like /assignments?showGrades=1.
3. query - A parsed version of search, usually an object but not a standard browser feature.
4. hash - The # portion of the URL. This is not available to servers in request.url so its client only. By default it means which part of the page the user should be scrolled to, but developers use it for various things.
5. state - Object associated with a location. Think of it like a hidden URL query. It's state you want to keep with a specific location, but you don't want it to be visible in the URL.

Git Crash Course for Beginners

Preface

A good understanding of Git is an incredibly valuable tool for anyone working amongst a group on a single project. At first, learning how to use Git will appear quite complicated and difficult to grasp, but it is actually quite simple and easy to understand.

Git is a version control system that allows multiple developers to contribute to a project simultaneously. It is a command-line application with a set of commands to manipulate commits and branches (explained below). This tutorial will help you get started, and in no time you will be a Git Ninja!

	// ==UserScript==
	// @name ArtiGist
	// @version 0.5
	// @description Launch single-page HTML apps from GitHub Gists.
	// @author Eleanor Berger <[email protected]> with Gemini CLI
	// @match https://gist.github.com//
	// @match https://gist.githubusercontent.com//
	// @grant GM_xmlhttpRequest
	// @grant GM_openInTab
	// ==/UserScript==

	/*
	*
	* Return SQLite3 query results as a Nodejs stream, sensitive to backpressure.
	*
	* Assumes a foo.db file with a lot of rows - I used 1000 with a number & a string
	*/

	const stream = require('stream');
	const sqlite = require('sqlite3');
	class DBStream extends stream.Readable {