rociiu

I want to turn this into a programming contest. Everyone should do this using their favorite technique and language. But, I want to add three more challenges (that admittedly stack the deck in my favor).

1. create a stats collecting query decorate that measures the time it takes to execute the query
  (assume you have a stats object that responds to #measure and takes a block: stats.measure { sleep 1.second }
2. read "configuration" from a hash like:
  { :timeout => 1.second, :stats => true }
that adds the timeout and stats decorators to the factory if present in the hash, otherwise not.
3. at the end write a program that REVERSES the order of the decorators. So if you did Timeout(Stats(Query)) make it Stats(Timeout(Query)). Note that you must do this programmatically so write a generic decorator reversing function. You may expand the proxy interface to have a method called "underlying", "delegate" or some such.

The contest is: do this in your language in as "elegant" a way as you like. The goal is clarity 

rociiu

module ParameterizedConcern
  def extended(mod = nil, &block)
    unless mod
      @extended_block = block
      return
    end

    mod.module_eval(&@extended_block) if @extended_block
  end

rociiu

# Blog post at 
# http://pivotallabs.com/users/rolson/blog/articles/1162-redefine-a-method-from-a-module-like-a-gentleman

module Teacher
  
  def self.included(base)
    base.extend ClassMethods
    base.overwrite_initialize
    base.instance_eval do
      def method_added(name)

rociiu

# Newbie Programmer
def factorial(x)
  if x == 0
    return 1
  else
    return x * factorial(x - 1)
  end
end
puts factorial(6)
puts factorial(0)

rociiu

# Run rake db:size to get a print of your database size in bytes.
# Run rake db:tables:size to get the sizes for individual tables
# Works for MySQL and PostgreSQL. Not tested elsewhere.

namespace :db do
  desc 'Print data size for entire database'
  task :size => :environment do

    database_name = ActiveRecord::Base.connection.instance_variable_get("@config")[:database]
    adapter = ActiveRecord::Base.connection.adapter_name.downcase

rociiu

/* The following is a simple program to check for memory corrections in
 * DRAM with ECC switched off. Accordingly to recend large scale studies
 * such as http://www.cs.toronto.edu/~bianca/papers/sigmetrics09.pdf
 * the error rate is of 25,000-75,000 errors per billion hours per Mbit.
 *
 * If this is true you should see at least one error after a few days
 * running this program at max in a computer without ECC.
 *
 * Compile with: gcc -O2 -Wall -W -o dramerr dramerr.c
 *

rociiu

#Newbie programmer
def factorial(x):
    if x == 0:
        return 1
    else:
        return x * factorial(x - 1)
print factorial(6)


#First year programmer, studied Pascal

rociiu

#!/usr/bin/env ruby
# -*- ruby -*-
require 'rubygems'
require 'daemon-spawn'

RAILS_ROOT = File.expand_path(File.join(File.dirname(__FILE__), '..'))

class DelayedJobWorker < DaemonSpawn::Base
  def start(args)
    ENV['RAILS_ENV'] ||= args.first || 'development'

rociiu

# Critical default settings:
disable_system_gems
disable_rubygems
bundle_path ".gems/bundler_gems"

# List gems to bundle here:
gem "rails", "3.0.pre", :git => "git://github.com/rails/rails.git"
gem "arel",             :git => "git://github.com/rails/arel.git"
gem "i18n"
gem "dm-appengine"

rociiu

# Critical default settings:
disable_system_gems
disable_rubygems
bundle_path ".gems/bundler_gems"

# List gems to bundle here:
gem "rails", "3.0.pre", :git => "git://github.com/rails/rails.git"
gem "arel",             :git => "git://github.com/rails/arel.git"
gem "i18n"
gem "dm-appengine"