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37signals Open Source Releases (2021–2026)

2021

console1984 — Privacy-aware Rails console that records sessions and protects encrypted data. Blog: Privacy-aware Rails consoles
audits1984 — Auditing interface for console1984 sessions. Blog: [Privacy-aware Rails

Array Iteration

https://gist.github.com/ljharb/58faf1cfcb4e6808f74aae4ef7944cff

While attempting to explain JavaScript's reduce method on arrays, conceptually, I came up with the following - hopefully it's helpful; happy to tweak it if anyone has suggestions.

Intro

JavaScript Arrays have lots of built in methods on their prototype. Some of them mutate - ie, they change the underlying array in-place. Luckily, most of them do not - they instead return an entirely distinct array. Since arrays are conceptually a contiguous list of items, it helps code clarity and maintainability a lot to be able to operate on them in a "functional" way. (I'll also insist on referring to an array as a "list" - although in some languages, List is a native data type, in JS and this post, I'm referring to the concept. Everywhere I use the word "list" you can assume I'm talking about a JS Array) This means, to perform a single operation on the list as a whole ("atomically"), and to return a new list - thus making it mu

📘 Understanding the Organization and Architecture of the Arduino UNO Q

Part 1 — The Big Picture

⭐ The Most Important Idea

To understand the Arduino UNO Q, it is helpful to move beyond the traditional single-microcontroller mental model used for classic Arduino boards.

Multi-tenant Systems Troubleshooting Guide

A structured checklist for isolating, diagnosing, and resolving issues in shared-infrastructure systems.

For developers with limited multi-tenant experience and for people that need to refresh their knowledge and expertise on the subject.

How to Use This Guide

🎬 免费影视资源汇总v1.0

📅 最后更新：2025年7月22日
🔗 收录优质免费影视资源站点，持续更新中...

🌟 观影(无名小站)

推荐指数： ⭐⭐⭐⭐⭐
特色： 海量资源全部免费，更新快

基本情報

Kyohei Fukuda（福田京平）/ GitHub: hand-dot
X: @labelmake / YouTube: @kyohei_dev / Zenn: @hand_dot / Web: kyohei.dev

回答スタイル

挨拶・前置き・段階報告・絵文字禁止。結論ファースト
指摘すべきことは率直に指摘

The command line, in short…

wget -k -K -E -r -l 10 -p -N -F --restrict-file-names=windows -nH http://website.com/

…and the options explained

-k : convert links to relative
-K : keep an original versions of files without the conversions made by wget
-E : rename html files to .html (if they don’t already have an htm(l) extension)
-r : recursive… of course we want to make a recursive copy
-l 10 : the maximum level of recursion. if you have a really big website you may need to put a higher number, but 10 levels should be enough.

The Complete Guide to Building Skills for Claude

	#!/usr/bin/env python
	# filepath: .\python_notebooks\util\html_display.py

	"""
	HTML display utilities for rendering Python objects as interactive HTML
	Inspired by dotnet interactive's HtmlFormatter
	"""

	import json
	from typing import Any, Dict, List, Union, Optional