superjojo140

Start from Archlinux USB Stick

Load german keyboard layout

$ loadkeys de

Enable Wifi (optional but usefull)

$ wifi-menu

superjojo140

const express = require('express');
const app = express(); 

// Serve the static files from the angular build
app.use(express.static(`${__dirname}/dist/PROJECT_NAME`)); 

app.get('/*',(req,res) => {
  res.sendFile(`${__dirname}/dist/PROJECT_NAME/index.html`);
}); 

superjojo140

The Content-Type header is used to specify how the data in the body of a HTTP request or response is formatted.

Possible Values

There are really a lot of possible values. The most common values for HTTP Requests are listed here. For a more completely list see MDN - MIME types

application/json

superjojo140

   function myCoolPromise() {
        return new Promise(function (resolve, reject) {
            //do some async things
            const data = "this_is_so_async";
            //if successfull
            resolve(data);
            //if not
            reject("error");
        });
    }

superjojo140

let dummyInput = [
    "Was ergibt 28 plus 9?",
    "Bitte addieren Sie 6 und 38.",
    "Bitte geben Sie den ersten, vierten und fünften Buchstaben von 'JEWELL' ein.",
    "Wie viele Buchstaben hat MADRID?",
    "Bitte subtrahieren Sie 22 von 3.",
    "Zählen Sie die Buchstaben: THIN",
    "Bitte ziehen Sie 2 von 9 ab.",
    "Was ergibt 11 minus 36?"
]

superjojo140

Microservices - Deployment on heroku

Setup

• Create heroku Account (https://www.heroku.com)
• Install heroku
• Heroku login: heroku login

Enviroment Variables

Use enviroment variables for ports and urls!

superjojo140

This sounds easy but... it isn't!

Client side

Use this fetch options:

fetch('superUnsecureCorsUrl',{
   credentials: 'include'
})

superjojo140

Use mysql CLI

mysql --user=my_username --password

Create a new user

CREATE USER 'username'@'localhost' IDENTIFIED BY 'password';

superjojo140

Using chmod...

Examples

chmod a+rwx path/to/file    # Everybody can read, write and execute the file
chmod u+rwx path/to/file    # The owner of the file can read, write and execute the file
chmod o-wx path/to/file     # All other users can no longer write or execute the file
chmod ug+x path/to/file     # The owner and the group can now execute the file

superjojo140

import * as child_process from 'child_process'

/**
 * Executes a shell command and return it as a Promise.
 */
export function exec(cmd: string): Promise<string> {
    return new Promise((resolve, reject) => {
        child_process.exec(cmd, (error, stdout, stderr) => {
            if (error) {
                reject({ error: error, stderr: stderr });