xaviershay

by the end of 2010 I will...

- on the cards
✘ fail, or rejected
✔ complete

physically:
✘ Lead an indoor grade 20+ sport climb [can almost onsite some 19s top rope, still need to learn to lead]
✔ Lead a multi-pitch trad climb [didn't learn how to use gear]
✘ 5 minute plank [going well, less than 90s away]

xaviershay

# Monkey patch in CTRL-C support for rspec from 
# http://github.com/dchelimsky/rspec/commit/029f77c5063894cf52af05335b8e1c278411978b
# until it gets released

module Spec
  module Example
    module ExampleMethods
      def execute(run_options, instance_variables) # :nodoc:
        run_options.reporter.example_started(@_proxy)
        set_instance_variables_from_hash(instance_variables)

xaviershay

require 'rubygems'
require 'hpricot'
require 'fastercsv'

doc = Hpricot::XML(File.read(ARGV[0]))

csv = FasterCSV.generate do |csv|
  (doc/:Trackpoint).each do |x|
    next unless x.at('HeartRateBpm') && x.at('Position')
    csv << [

xaviershay

# In Rspec, gives you:
# before(:all_transactional) {}
#
# Uses nested transactions to correctly rollback :all before blocks
# You *may* need to reload some instance variables in a separate before(:each) block
# All a bit of a hack, but really handy
module RspecRailsTransactions
  def before_all_transactional_parts # :nodoc:
    @before_all_transactional_parts ||= []
  end

xaviershay

module ActiveRecord
  class Base
    def atomic &block
      transaction {
        lock!
        yield
      }
    end
  end
end

xaviershay

Title:
Your database is your friend

Description:
Learn how going against rails conventions and using your database can make your 
life easier. A practical tutorial on data integrity and design.

Type:
3 hour tutorial

xaviershay

# DM Extensions

# Use for roll your own optimistic locking, without using a dedicated lock_version column
def update_with_conditions(attributes, conditions)
  properties = attributes.inject({}) do |a, (key, value)|
    a.update(property_by_name(key) => value)
  end

  updated_count = repository.adapter.update(properties, all(conditions))

xaviershay

# Add pessmistic locking support. Make sure you're inside a transaction.
#   resource = MyResource.get(24)
#   resource.lock! # write lock (FOR UPDATE)
#
# TODO:
#   resource = MyResource.get_with_lock!(:write, 24)
#   resource = MyResource.get_with_lock!(:read, 24)
#   MyResource.all(:lock => :write)

module DataMapper

xaviershay

# Hacks to get nested transactions in Postgres
# Not extensively tested, more a proof of concept
#
# It re-opens the existing Transaction class to add a check for whether
# we need a nested transaction or not, and adds a new NestedTransaction
# transaction primitive that issues savepoint commands rather than begin/commit.

module DataMapper
  module Resource
    def transaction(&block)

xaviershay

Royal Melbourne Hospital - Vegan Menu

Dinner: 
- Cucumber + Cheese sandwich
- Orange Juice

Dinner (2nd try): 
- Tomato/cucumber/carrot salad
- Potato + corn + mayonnaise coleslaw
- Jelly (gelatine)