Frank Lemanschik frank-dspeed

Eric Elliott's "Composing Software" Series

A collection of links to the excellent "Composing Software" series of medium stories by Eric Elliott.

Edit: I see that each post in the series now has index, previous and next links. However, they don't follow a linear flow through all the articles with some pointing back to previous posts effectively locking you in a loop.

Eric Elliott's "Master the JavaScript Interview" Series

A collection of links to the "Master the JavaScript Interview" series of medium stories by Eric Elliott.

Not part of the series but a good grounding.

Master the JavaScript Interview

Docker compose as a systemd unit

Create file /etc/systemd/system/[email protected]. SystemD calling binaries using an absolute path. In my case is prefixed by /usr/local/bin, you should use paths specific for your environment.

[Unit]
Description=%i service with docker compose
PartOf=docker.service
After=docker.service

	var hyperdb = require('hyperdb')
	var sub = require('subhyperdb')
	var hyperdrive = require('hyperdrive')
	var hypergraph = require('hyper-graph-db')
	var hyperdriveMessages = require('hyperdrive/lib/messages')

	var dbName = process.argv[2]
	var op = process.argv[3]

	if (op !== 'read' && op !== 'write') {

	// Create a Promise that resolves after ms time
	var timer = function(ms) {
	return new Promise(resolve => {
	setTimeout(resolve, ms);
	});
	};

	// Repeatedly generate a number starting
	// from 0 after a random amount of time
	var source = async function*() {

	#!/bin/bash


	# Settings
	# Path to the letsencrypt-auto tool
	LE_TOOL=/opt/letsencrypt/letsencrypt-auto
	#LE_TOOL=/opt/letsencrypt/letsencrypt
	# Directory where the acme client puts the generated certs
	LE_OUTPUT=/etc/letsencrypt/live

	<html><head>
	<script type="text/javascript">
	let ownerDocument = document.currentScript.ownerDocument
	let baseUrl = ownerDocument.location.pathname.split('import.html')[0]
	let base = document.createElement('base')
	base.href = baseUrl
	ownerDocument.head.appendChild(base)
	</script>
	<!-- here base gets attached -->
	</head><body>

	#!/usr/bin/bash

	# Download zeromq
	# Ref http://zeromq.org/intro:get-the-software
	wget https://github.com/zeromq/libzmq/releases/download/v4.2.2/zeromq-4.2.2.tar.gz

	# Unpack tarball package
	tar xvzf zeromq-4.2.2.tar.gz

	# Install dependency

	"use strict";

	// #############
	// Basic example
	// - example reading and writing data on from/to card
	// - should work well with any compatible PC/SC card reader
	// - tested with Mifare Ultralight cards but should work with many others
	// - example authentication for Mifare Classic cards
	// #############