jdmichaud

ANSI Escape Sequences

Standard escape codes are prefixed with Escape:

Ctrl-Key: ^[
Octal: \033
Unicode: \u001b
Hexadecimal: \x1b
Decimal: 27

Dump pages: https://dumps.wikimedia.org/
The format of the url of a dump file is https://<host>/<wikisite>/<dumpdate>/<file>

simplewiki

A dataset for simple testing is simplewiki: https://dumps.wikimedia.org/simplewiki/20210801/
Simple english contains wiki ~300000 article. Easy to download and test idea against.

Files

Files are dumped in different formats for different purposes.

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)

Format

Some comparison between geo related data files: https://www.gaia-gis.it/fossil/libspatialite/wiki?name=Supporting+GeoJSON

Tile

Some explanation: https://wiki.openstreetmap.org/wiki/Tiles

In webgl.html is presented a method that loads an array of 16 bits unsigned values representing grayscale intensities being processed through a LUT. An javascript implementation is provided for reference.

In webgl2.html adds the handling of signed data in addition to unsigned data and using integer texture.

	ncat -klnvp 8080 --sh-exec "\ # Start ncat in listening mode and redirect input AND output to a shell command
	grep --line-buffered GET \| \ # retrieve only GET request
	sed --unbuffered -e 's@GET \([^ ]*\) HTTP/1.1@\1\n\n@g' \| \ # From the GET request, retrieve the path
	xargs -i{} curl -sSL -w '\n\n\n' -D - http://host:port/{} \| \ # Redirect the path to a specific host:port
	tee -a /tmp/curl-response \| \ # For debug purposes
	sed --unbuffered -e 's@\(Content-Length: [0-9]\)@\1\nAccess-Control-Allow-Origin: @g' \| \ # Add the CORS header
	tee -a /tmp/proxy.log" # For debug purposes

	$ cat > test.zig
	export fn add(lhs: f32, rhs: f32) f32 {
	return lhs + rhs;
	}
	$ zig build-lib test.zig -target wasm32-freestanding -dynamic
	$ cat > test.js
	WebAssembly.instantiate((function() {
	const source = require("fs").readFileSync("test.wasm");
	return new Uint8Array(source);
	})(), { env: {} }).then(wasm => {

	<html>
	<head>
	<meta charset="utf-8">
	<link rel="shortcut icon" href="#" />
	<title>WW</title>
	<script type="text/javascript" src="index.js"></script>
	</head>
	<body>

	</body>

	#!/usr/bin/env bash

	if [ $# -lt 1 ]
	then
	echo "$0: error: missing arguments"
	echo "usage: $0 <command> <args...>"
	exit 1
	fi

	for folder in `find . -maxdepth 1 ! -path . -type d`

	#!/usr/bin/env bash

	# List all dependencies, the released installed and the time the package of that release was uploaded to artifactory
	dependencies=`cat <(jq -r '.devDependencies \| keys[]' package.json) <(jq -r '.dependencies \| keys[]' package.json)`
	for dependency in $dependencies
	do
	version=`jq -r .dependencies.\"$dependency\".version package-lock.json`
	time=`npm show $dependency --json \| jq -r .time.\"$version\"`
	echo $dependency $version $time
	done