lrvick

// convert 0..255 R,G,B values to binary string
RGBToBin = function(r,g,b){
    var bin = r << 16 | g << 8 | b;
    return (function(h){
        return new Array(25-h.length).join("0")+h
    })(bin.toString(2))
}

// convert 0..255 R,G,B values to a hexidecimal color string
RGBToHex = function(r,g,b){

ShirtlessKirk

/**
 * Luhn algorithm in JavaScript: validate credit card number supplied as string of numbers
 * @author ShirtlessKirk. Copyright (c) 2012.
 * @license WTFPL (http://www.wtfpl.net/txt/copying)
 */
var luhnChk = (function (arr) {
    return function (ccNum) {
        var 
            len = ccNum.length,
            bit = 1,

omeinusch

#!/bin/bash
PASS=`pwgen -s 40 1`

mysql -uroot <<MYSQL_SCRIPT
CREATE DATABASE $1;
CREATE USER '$1'@'localhost' IDENTIFIED BY '$PASS';
GRANT ALL PRIVILEGES ON $1.* TO '$1'@'localhost';
FLUSH PRIVILEGES;
MYSQL_SCRIPT

soheilhy

Virtual Hosts on nginx (CSC309)

When hosting our web applications, we often have one public IP address (i.e., an IP address visible to the outside world) using which we want to host multiple web apps. For example, one may wants to host three different web apps respectively for example1.com, example2.com, and example1.com/images on the same machine using a single IP address.

How can we do that? Well, the good news is Internet browsers

ygotthilf

ssh-keygen -t rsa -b 4096 -m PEM -f jwtRS256.key
# Don't add passphrase
openssl rsa -in jwtRS256.key -pubout -outform PEM -out jwtRS256.key.pub
cat jwtRS256.key
cat jwtRS256.key.pub

alexsasharegan

function promisify(func, ...args) {
  if (arguments.length === 1) {
    // Curry with the decremented arity
    return promisify.bind(null, func)
  }

  return new Promise((resolve, reject) => {
    func(...args, (error, ...cbArgs) => {
      if (error) {
        return reject(error)

clemlatz

1. Configure server: Nginx

Create the certificate:

$ sudo openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout /etc/ssl/private/nginx-selfsigned.key -out /etc/ssl/certs/nginx-selfsigned.crt

Create a strong Diffie-Hellman group:

$ sudo openssl dhparam -out /etc/ssl/certs/dhparam.pem 2048

joyrexus

collapsible markdown?

CLICK ME

yes, even hidden code blocks!

print("hello world!")

Jamp

#!/bin/bash
# Run as root

set -e

apt-get update
apt-get install -y build-essential
apt-get install -y libncurses5-dev
useradd mysql

brandontrowe

const tolerance = 200; // swipe distance in pixels
const swipeLeft$ = Rx.Observable.fromEvent(document, "touchstart")
    // Switch to listen to touchmove to determine position
    .switchMap(startEvent =>
        Rx.Observable.fromEvent(document, "touchmove")
            // Listen until "touchend" is fired
            .takeUntil(Rx.Observable.fromEvent(document, "touchend"))
            // Output the pageX location
            .map(event => event.touches[0].pageX)
            // Accumulate the pageX difference from the start of the touch