mattdenner

require 'rubygems'
require 'nokogiri'
require 'open-uri'

doc = Nokogiri::HTML(open('http://learnyousomeerlang.com/content'))
urls = [ 'http://learnyousomeerlang.com/content' ] + doc.xpath('//h3/a').map { |n| n.attribute('href').to_s }
exec("wkhtmltopdf -s A4 #{ urls.join(' ') } learnyousomeerlang.pdf")

mattdenner

$ rake metrics:all
(in /home/matt/brute_force_capatcha)
saikuro --filter_cyclo 0 --warn_cyclo 5 --error_cyclo 7 --output_directory tmp/metric_fu/scratch/saikuro --formater text --input_directory "lib" --cyclo  
sh: saikuro: not found
Saikuro failed with exit status: 127

mattdenner

_="_=%p;puts _%%_";puts _%_

mattdenner

#!/usr/bin/env ruby
require 'rubygems'
require 'amqp'
require 'mq'
require 'uuid'

exchange_type = ARGV.first or raise "Usage: publisher <exchange type>"
[ :direct, :fanout, :topic ].include?(exchange_type.to_sym) or raise "You can only use direct, fanout or topic"

KEYS = [ 'even', 'odd' ]

mattdenner

#!/usr/bin/env ruby
require 'rubygems'
require 'amqp'
require 'mq'
require 'uuid'

exchange_type = ARGV.first or raise "Usage: publisher <exchange type>"
[ :direct, :fanout, :topic ].include?(exchange_type.to_sym) or raise "You can only use direct, fanout or topic"

KEYS = [ 'even', 'odd' ]

mattdenner

class ConstructorHelper
  class << self
    def construct(target, writers_for = target.instance_variables, &block)
      self.new(target, writers_for).instance_eval(&block) if block_given?
    end
  end

  def initialize(target, writers_for = target.instance_variables)
    writers_for.each do |variable|
      self.class.send(:define_method, :"#{ variable.to_s.sub(/^:?@/, '') }=") do |v|

mattdenner

class MyBase
  def do_something
  end
end

class MyDerived < MyBase
  def do_something
    do_something_else
    super
  end

mattdenner

/* 
  The back of the card is rotated 180 degrees from the card itself, giving
  the illusion that it really is the back!  Unfortunately hiding the back
  face of both "faces" doesn't work with webkit builds (requires Snow Leopard!)
  but we set it anyway.
*/
.card #back { -webkit-transform: rotateY(180deg); }
.card .face { -webkit-backface-visibility: hidden; }

/*

mattdenner

var vows = require('vows'), assert = require('assert'), path = require('path');
var application = require(path.join(process.cwd(), 'public', 'javascripts', 'application'));

mattdenner

I've been trying to track down a performance problem (one of many) within our application that sucks 200 seconds (or more) when doing something really simple. The design of the model is this:

class Study
  has_many :requests
  has_many :projects, :through => :requests, :uniq => true
end

Essentially we have a study that can request some work to be done in our laboratories and that work is done as part of a project, which is responsible for paying for it later. So a study can be related to many projects through the work it has requested.

This all works fine until you want to do eager loading of the projects association, specifically within a query for multiple studies. For example, the killer query comes from: