tobi

require 'digest/md5'

def compute_key_for_src(src)
  Digest::MD5.hexdigest('<YOUR API KEY>' + src)
end

def screenshot_of(src)
  "http://www.web2png.com/s/123/frontpage.png?src=#{src}&key=#{compute_key_for_src(src}"
end

lwe

in action: http://www.vimeo.com/6639381

javascript:

var pp = "/images/test/images_";
var images_p1 = [ pp + '1.jpg', pp + '2.jpg', pp + '3.jpg', pp + '4.jpg', pp + '5.jpg' ];
var images_p2 = [ pp + '6.jpg', pp + '7.jpg', pp + '8.jpg', pp + '9.jpg', pp + '10.jpg' ];

$('.preview').slideview(function(e) { return e.id == "p1" ? images_p1 : images_p2; }, { size: 75 });

isaacs

echo 'export PATH=$HOME/local/bin:$PATH' >> ~/.bashrc
. ~/.bashrc
mkdir ~/local
mkdir ~/node-latest-install
cd ~/node-latest-install
curl http://nodejs.org/dist/node-latest.tar.gz | tar xz --strip-components=1
./configure --prefix=~/local
make install # ok, fine, this step probably takes more than 30 seconds...
curl https://www.npmjs.org/install.sh | sh

runemadsen

Polymorphic Associations reversed

It's pretty easy to do polymorphic associations in Rails: A Picture can belong to either a BlogPost or an Article. But what if you need the relationship the other way around? A Picture, a Text and a Video can belong to an Article, and that article can find all media by calling @article.media

This example shows how to create an ArticleElement join model that handles the polymorphic relationship. To add fields that are common to all polymorphic models, add fields to the join model.

FiloSottile

var page = require('webpage').create(),
    address, output, size;

if (phantom.args.length < 2 || phantom.args.length > 3) {
    console.log('Usage: rasterize.js URL filename');
    phantom.exit();
} else {
    address = phantom.args[0];
    output = phantom.args[1];
    page.viewportSize = { width: 1280, height: 1024 };

trey

Creating a Happy Git Environment on OS X

Step 1: Install Git

brew install git bash-completion

Configure things:

git config --global user.name "Your Name"

git config --global user.email "you@example.com"

MohamedAlaa

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

mimosz

# sudo ln -s ~/nginx.conf unicorn.conf
upstream app_server {
  server unix:/tmp/unicorn_padrino.sock fail_timeout=0;
}

server {
  listen   80;
  charset  utf-8;
  server_name  db.innshine.com;

natew

  # Ranking algorithm
  def set_rank
    find_id = matching_id || id
    shared_song = Song.find(find_id) if find_id
    if shared_song
      favs_count = shared_song.user_broadcasts_count
      time_created = shared_song.created_at
    else
      favs_count = 1
      time_created = created_at

facultymatt

{
  "directory": "components"
}