litch

title	sidebar
Segment Event Tracking for Shopify	Shopify

Segment makes it simple for Shopify merchants to integrate analytics, email marketing, advertising and optimization tools. Rather than installing all your tools individually, you just install Segment once. We collect your data, translate it, and route it to any tool you want to use with the flick of a switch. Using Segment as the single platform to manage and install your third-party services will save you time and money.

The guide below explains how to install Segment in your Shopify store. All you need to get up and running is copy and paste a few snippets of code into your theme editor. (You don't have to edit the code or be versed in JavaScript.) The following guide will show you how, step by step.

---

litch

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

Wes Winham winhamwr@gmail.com

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.

litch

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

litch

class SpeakersController < ApplicationController
  load_and_authorize_resource :event
  load_and_authorize_resource :speaker, through: [:event], shallow: true #the array here could only be the single symbol but since i almost always wind up adding more, i just start with it
  before_filter :new_speaker, :only => [:new, :create]
  respond_to :html

  def index
  end

  def show

litch

require "xpath" # XPath is a separate gem now

module Cucumber
  module Rails
    module CapybaraSelectDatesAndTimes
      def select_date (date, options = {})
        date = Date.parse(date)

        # lookup id prefix by label
        id_prefix = id_prefix_for(options[:label])