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RKE2 commands

• Updated on May 29 to accommodate etcd container not having /bin/sh available anymore.

Install

curl -sL https://get.rke2.io | sh
systemctl daemon-reload
systemctl start rke2-server

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Demystifying Docker Volumes for Mac and PC Users

1. Docker runs on a Linux kernel

Docker can be confusing to PC and Windows users because many tutorials on that topic assume you're using a Linux machine.

As a Linux user, you learn that Volumes are stored in a part of the host filesystem managed by Docker, and that is /var/lib/docker/volumes. When you're running Docker on a Windows or Mac OS machine, you will read the same documentation and instructions but feel frustrated as that path don't exist on your system. This simple note is my answer to that.

When you use Docker on a Windows PC, you're typically doing one of these two things:

• Run Linux containers in a full Linux VM (what Docker typically does today)

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Zero knowledge databases

The idea

The idea is to provide a database as a service to end users in such a way that no one except the user herself can access the data, not even the hosting provider or the database administrator.

Advantages

• A privacy- and/or security-conscious user will have more trust in such a setup.
• The service provider cannot be coerced to release the data they were trusted with, and he cannot be held responsible for the content he is storing.

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#!/usr/bin/env zsh

git show-branch -a \
| grep '\*' \
| grep -v `git rev-parse --abbrev-ref HEAD` \
| head -n1 \
| sed 's/.*\[\(.*\)\].*/\1/' \
| sed 's/[\^~].*//'

# How it works:

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/*
  remote-data ported to ReasonML

  See also https://github.com/krisajenkins/remotedata
  Tools for fetching data from remote sources (incl. HTTP).
 */

type remoteData 'e 'a
  = NotAsked
  | Loading

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Making Impossible States Impossible in ReasonML

Introduction

If you have already seen Richard Feldman's talk entitled "Making Impossible States Impossible" or have read "Designing with types: Making illegal states unrepresentable" then you can skip the explanations and just head straight to the Reason examples.

This post is intended to display how to model your Reason Application to prevent creating impossible states. The benefits of being able to design a feature in this way include avoiding having to deal with complex test scenarios regarding defined business rules and a clear documentation of what is possible just by looking at the type definition. Long story short, let's see how this all works by implementing an example.

Requirements

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/* 
  Slaying a UI Anti Pattern in ReasonML
  Based on Kris Jenkins original writing.
  http://blog.jenkster.com/2016/06/how-elm-slays-a-ui-antipattern.html
*/
type remoteData 'e 'a =
  | NotAsked
  | Loading
  | Failure 'e
  | Success 'a;

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Install MySQL on macOS Sierra

This procedure explains how to install MySQL using Homebrew on macOS Sierra 10.12

Install Homebrew

• Installing Homebrew is effortless, open Terminal and enter :
  $ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
• Note: Homebrew will download and install Command Line Tools for Xcode 8.0 as part of the installation process.

Install MySQL

At this time of writing, Homebrew has MySQL version 5.7.15 as default formulae in its main repository :

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var str = 'class ಠ_ಠ extends Array {constructor(j = "a", ...c) {const q = (({u: e}) => {return { [`s${c}`]: Symbol(j) };})({});super(j, q, ...c);}}' + 
          'new Promise((f) => {const a = function* (){return "\u{20BB7}".match(/./u)[0].length === 2 || true;};for (let vre of a()) {' +
          'const [uw, as, he, re] = [new Set(), new WeakSet(), new Map(), new WeakMap()];break;}f(new Proxy({}, {get: (han, h) => h in han ? han[h] ' + 
          ': "42".repeat(0o10)}));}).then(bi => new ಠ_ಠ(bi.rd));';

try {
  eval(str);
} catch(e) {
  alert('Your browser does not support ES6!')
}

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System.config({
    transpiler: 'typescript',
    typescriptOptions: {
        emitDecoratorMetadata: true
    },
    map: {
        app: './src'
    },
    packages: {
        app: {