davidglassborow

# This method finds related articles using Jaccard index (optimized for PostgreSQL).
# More info: http://en.wikipedia.org/wiki/Jaccard_index

class Article < ActiveRecord::Base

  def related(limit=10)
    Article.find_by_sql(%Q{
      SELECT
      	a.*,
      	( SELECT array_agg(t.name) FROM taggings tg, tags t

davidglassborow

Friend-or-Foe Relations in the Middle East

Yesterday night, I stumbled upon yet another interesting graph:

The "interactive" version of this image can be found on on this website: they basically try to interactively visualise the interplay of parties that are intervening in the many conflicts currently happening in the Middle East. It’s very, very well done.

So I did a little digging, and found that the original data is in a google doc that you can find over here. Look at the second tab: it’s basically an adjacency matrix of relationships between parties. In other words: a graph.

davidglassborow

Steps to migrate from SVN to GitLab

This process worked for me. I take no responsibility for any damage or loss incurred as a result of following or not following these steps or, for that matter, anything else you might do or not do.

Setup

• SVN is hosted at svn.domain.com.au.
• SVN is accessible via http (other protocols should work).
• GitLab is hosted at git.domain.com.au and:

davidglassborow

source "https://rubygems.org"

gem 'eventmachine'
gem 'rubysl-stringio'
gem 'sinatra'
gem 'yajl-ruby', require: 'yajl'
gem 'thin'
gem 'em-websocket', :git=>'https://github.com/igrigorik/em-websocket.git'

davidglassborow

#r "System.Xml.Linq"

open System
open System.IO
open System.Xml.Linq

let script = seq {

    //TODO: this currently loads fsproj's in alphabeticall order, we should instead
    //build the dependencies graph of the fsproj's and load them in topological sort order

davidglassborow

This note explains how to build Postgres from source and setup to debug it using LLDB on a Mac. I used this technique to research this article:
http://patshaughnessy.net/2014/10/13/following-a-select-statement-through-postgres-internals

1. Shut down existing postgres if necessary - you don’t want to mess up your existing DB or work :)

$ ps aux | grep postgres
pat               456   0.0  0.0  2503812    828   ??  Ss   Sun10AM   0:11.59 postgres: stats collector process       
pat               455   0.0  0.0  2649692   2536   ??  Ss   Sun10AM   0:05.00 postgres: autovacuum launcher process       
pat               454   0.0  0.0  2640476    304   ??  Ss   Sun10AM   0:00.74 postgres: wal writer process       
pat               453   0.0  0.0  2640476    336   ??  Ss   Sun10AM   0:00.76 postgres: writer process       

davidglassborow

# This needs to be called after one of the gemfile templates

apply 'http://datamapper.org/templates/rails/config.rb'
apply 'http://datamapper.org/templates/rails/database.yml.rb'

inject_into_file  'app/controllers/application_controller.rb',
                  "require 'dm-rails/middleware/identity_map'\n",
                  :before => 'class ApplicationController'

inject_into_class 'app/controllers/application_controller.rb',

davidglassborow

#!/bin/sh
#set -x
#
# chkconfig: 2345 99 01
# description:  starts and stops torquebox

TORQUEBOX_JBOSS_USER=torquebox

if [ "$TORQUEBOX_JBOSS_USER" = "RUNASIS" ]; then
  SUBIT=""

davidglassborow

module Praeclarum.AutoLayout

open System

#if __IOS__
open Foundation
open UIKit
type NativeView = UIView
#else
open MonoMac.Foundation

davidglassborow

Step 1

Does your osx terminal speak java 7? Start Terminal.app and try: java -version:

> java -version
java version "1.7.0_51"
Java(TM) SE Runtime Environment (build 1.7.0_51-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.51-b03, mixed mode)