Tom de Grunt tdegrunt

A (Nicer) Redis Client for EventMachine

Redis is my favourite key/value store; it’s flexible, easy to set up and insanely fast. [EventMachine][] is a popular Ruby library for doing asynchronous I/O using an event loop. Bindings already [exist][em-redis] for accessing a Redis server using EM’s async-I/O (courtesy of Jonathan Broad), but unfortunately the resulting code has to use [Continuation-Passing Style][cps] via Ruby blocks. A very basic example of what that looks like follows:

Creating a dynamic site-to-site VPN with OpenSwan on Ubuntu 10.04 on EC2

Wes Winham [email protected]

There are many tutorials floating around the web that almost get you a dynamic VPN in EC2. The goal of this tutorial is to be a one-stop-shop for this specific setup.

	#pragma mark - Phone Number Field Formatting

	// Adopted from: http://stackoverflow.com/questions/6052966/phone-number-formatting
	- (BOOL)textField:(UITextField )textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString )string
	{
	if (textField == self.mobileNumberField \|\| textField == self.homeNumberField \|\| textField == self.workNumberField) {
	int length = [self getLength:textField.text];

	if(length == 10) {
	if(range.length == 0)

	class ApplicationController < ActionController::Base
	protect_from_forgery

	protected

	def current_user
	@current_user \|\|= User.find_by_id(session[:user_id])
	end

	def signed_in?

	require 'zmq'
	context = ZMQ::Context.new
	pub = context.socket ZMQ::PUB
	pub.setsockopt ZMQ::IDENTITY, 'ping-pinger'
	pub.bind 'tcp://*:5555'

	i=0
	loop do
	pub.send "ping pinger #{i+=1}" ; sleep 1
	end

	# A sample Gemfile
	source "http://rubygems.org"

	gem "redis"
	gem 'eventmachine', :git => 'git://github.com/eventmachine/eventmachine.git'
	gem "em-hiredis"
	# gem "em-synchrony"
	gem "em-websocket"

	STDOUT.sync = true

	require 'queue'

	start_time = Time.now.to_i
	msg = 0

	queue = Queue.new("testing")
	queue.subscribe do \|obj\|
	msg += 1

	Here is a sample of how I am currently dealing with users.

	Big thanks to uggedal! I used his user states as an example: https://github.com/uggedal/states

	###
	# How to create password hashes
	###
	python -c "import crypt; print crypt.crypt('password', '\$6\$SALTsalt\$')"

	###

	- (MKOverlayView )mapView:(MKMapView )mapView viewForOverlay:(id<MKOverlay>)overlay
	{
	if ([overlay isKindOfClass:[MKPolygon class]])
	{
	MKPolygonView* aView = [[MKPolygonView alloc]initWithPolygon:(MKPolygon*)overlay];
	aView.fillColor = [[UIColor cyanColor] colorWithAlphaComponent:0.2];
	aView.strokeColor = [[UIColor blueColor] colorWithAlphaComponent:0.7];
	aView.lineWidth = 3;
	return aView;
	}

	<!DOCTYPE html>
	<html>
	<head>
	<title>Leaflet</title>
	<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.3.1/leaflet.css" />
	<script src="http://cdn.leafletjs.com/leaflet-0.3.1/leaflet.js"></script>
	<script src="http://maps.google.com/maps/api/js?v=3.2&sensor=false"></script>
	<script src="http://matchingnotes.com/javascripts/leaflet-google.js"></script>
	</head>
	<body>