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The introduction to Reactive Programming you've been missing

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

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

JavaScript Crypto Libraries

List some crypto libraries for JavaScript out there. Might be a bit out dated. Scroll to the bottom.

WebCryptoAPI

http://www.w3.org/TR/WebCryptoAPI/

This specification describes a JavaScript API for performing basic cryptographic operations in web applications, such as hashing, signature generation and verification, and encryption and decryption. Additionally, it describes an API for applications to generate and/or manage the keying material necessary to perform these operations. Uses for this API range from user or service authentication, document or code signing, and the confidentiality and integrity of communications.

In August 2007 a hacker found a way to expose the PHP source code on facebook.com. He retrieved two files and then emailed them to me, and I wrote about the issue:

http://techcrunch.com/2007/08/11/facebook-source-code-leaked/

It became a big deal:

http://www.techmeme.com/070812/p1#a070812p1

The two files are index.php (the homepage) and search.php (the search page)

	<?
	if(file_exists('/www/global/lockdown')) {
	if($_COOKIE['4chan_auser'] && $_COOKIE['4chan_apass'] && ($_POST['mode']=='usrdel'\|\|$_GET['mode']=='latest')) {
	// ok
	}
	else {
	die('Posting temporarily disabled. Come back later!<br/>—Team 4chan (uptime? what\'s that?)');
	}
	}
	include_once "./yotsuba_config.php";

	// Go to menue:
	// find->find in files
	// Switch on reg_ex button
	// Find:
	^(.*)$
	// Where:
	c:\your_folder\,.php,.phtml,.js,.inc,.html, -/folder_to_exclude/*

	// Then click on the find button
	// Be careful to not click on Replace!!!