Ron's Brain Dump - software

css

Anonymous (anonymous@undisclosed.example.com) — 2025-04-13T16:19:31+00:00

just found a way to add the external anchor image to links with target="_blank" via CSS: a[target='_blank']::after { content: ''; display: inline-block; width: 1em; height: 1em; margin-left: 0.25em; margin-right: 0.25em; background-size: 100%; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewbox='0 0 12.2 12.2' width='14' height='14'%3E%3Cpath d='M5.7 0v1.5h4L4.5 6.7l1 1.1 5.3-5.2v3.9h1.4V0z'/%3E%3Cpath fill='none' d='M3.4 6.7l3-2.9H1.5v7…

docker

Anonymous (anonymous@undisclosed.example.com) — 2025-04-13T16:22:29+00:00

Setting up Docker (and Docker Desktop) on Ubuntu Sources * Prerequisites * verify you have a GNOME-based desktop environment (Ubuntu Desktop is GNOME-based) * if not install gnome-terminal - sudo apt install gnome-terminal * verify you have KVM virtualization support -

git

Anonymous (anonymous@undisclosed.example.com) — 2025-08-11T15:41:45+00:00

Conventional Commit Messages

java

Anonymous (anonymous@undisclosed.example.com) — 2025-04-13T16:19:03+00:00

hoping to collect Java-related wikis/articles/etc to record findings and potentially help others.

linux

Anonymous (anonymous@undisclosed.example.com) — 2025-04-13T16:20:10+00:00

Various bits of info found (often the hard way) regarding the Linux operating system (in my case Ubuntu-24.04.1). * RAID

openapi

Anonymous (anonymous@undisclosed.example.com) — 2025-04-13T16:23:00+00:00

OpenAPI document structures Sources * * Structure by Version surprising how much the structure can change between versions; here's a handful of versions to show that. note the structure is the same for JSON and YAML versions. 3.0.1 * schemas : Map[string, Schema Object | Reference Object]

opensearch

Anonymous (anonymous@undisclosed.example.com) — 2025-04-13T16:21:25+00:00

Installing OpenSearch Prerequisites and Setup * uses Docker; which is why i installed Docker and wrote the Docker wiki yesterday * source * sudo swapoff -a * disables memory-paging and swapping * sudo vi /etc/sysctl.conf * actually it's /etc/sysctl.d/10-map-count.conf

php

Anonymous (anonymous@undisclosed.example.com) — 2025-06-11T14:18:12+00:00

How To's Iterate an associative array (map) foreach ($map as $key => $value) { echo "{$key} => {$value} "; print_r($arr); } Use a lambda to map an array of objects into a string $getVideoUrl = function($video) : string { return "thumbnail_url."'/>"; }; ... $videoUrls = $listing->videos != null ? implode(",", array_map($getVideoUrl, $listing->videos)) : "";

sehistory

Anonymous (anonymous@undisclosed.example.com) — 2026-04-15T15:46:53+00:00

This is an outline generated by Copilot; as an outline it seems quite thorough; obviously there are lots of bits to add but basically i was interested in the History of Software Engineering from the first SDE (Ada Lovelace) to today (which seems almost entirely AI-centric).

witcher

Anonymous (anonymous@undisclosed.example.com) — 2025-11-21T21:20:45+00:00

just a game i've started playing (Witcher 1) Controls * Witcher Wiki/Controls Alchemy References * Witcher Wiki/Potions Ingredients * Aether * Caelum * Hydragenum * Quebrith * Abomination lymph * Alghoul marrow * Balisse fruit * Ducal water * Fool's parsley leaves

yaml

Anonymous (anonymous@undisclosed.example.com) — 2025-05-31T15:02:52+00:00

YAML multi-line strings copied from Stack Overflow * > → interior line breaks are stripped out, although you get one at the end. * | → line breaks are preserved as \n * >- → like > but without trailing line break * |- → like | but without trailing line break