MarkTiedemann

Using Next Generation Node

Features

ES6 (ES2015)

🚩 TODO Explain some ES6 language features

ES7 (ES2016)

MarkTiedemann

Promisifying A Callback-based Function In Node 5

Node 5 is awesome! <3 By default, it comes with lots of ES6 features.

Among them are, for example, arrow functions. And there's the spread operator which, in combination with the arguments object, makes writing a promisify() function beautifully simple:

function promisify (foo) {
 return function () {

MarkTiedemann

A Simple Node.js File Server for Bluemix with Superstatic by Firebase

Step 1: Install Superstatic

npm install superstatic

Step 2: Create File Server

MarkTiedemann

Building A Simple Countdown Clock

Live example: http://codepen.io/abk955/pen/YwQmMJ

1. Creating the clock structure (in Jade)

• The countdown clock is supposed to display seconds, minutes, hours and days.

MarkTiedemann

#!/usr/bin/env node

/* Usage: node file-gen [mb]
 *
 * Example: Generate a 1 GB file
 * $ node file-gen 1024
 * time: 9163.383ms
 */

const fs = require('fs')

MarkTiedemann

@ECHO off

:: delete all upgrade logs
:: >nul 2>&1 = drop stdout and stderr output
DEL UpgradeLog*.htm >nul 2>&1

:: loop over all backup directories
FOR /d %%G IN (Backup*) DO (
  :: /s = remove all sub directories, too
  :: /q = remove quietly, without confirmation

MarkTiedemann

const http = require('http')
const url = require('url')

const apiPort = 3000
const proxyPort = 3001

const apiResStatus = 200
const apiResBody = `"Hi, I'm the API!"`

const clientReqMethod = 'GET'

MarkTiedemann

const { Readable } = require('stream')

const charArray = 'abcdefghijklmnopqrstuvwxyz'.split('')

class AlphabetStream extends Readable {

  constructor () {
    super()
    this.position = 0
  }

MarkTiedemann

docker ps -a -q | xargs -r docker rm -f
docker images -a -q | xargs -r docker rmi -f

MarkTiedemann

$code = {
  param ($id)
  $start = Get-Date
  # your code here
  Start-Sleep 1
  $stop = Get-Date
  $total = ($stop - $start).TotalMilliSeconds
  "[$id] $total ms"
}