therealadam

# Suppose we're going to have a bunch of code like the following
# boilerplate (ignore the unfortunate nil propagation)
@city = begin
          GizmoStore::Thingy.get(123)
        rescue GizmoStore::NotFound
          nil
        end

# I can't decide if this is useful boilerplate elimination or
# saccharine ivory tower abstraction.

therealadam

#!/bin/sh

message=$0 || "this just happened #boom"
echo "this just happened #boom" | nc -c localhost 4321
echo '....'
sleep 1
psql wcld -c 'select * from events order by time DESC;'

therealadam

require 'rubygems'
require 'fraggle/block'

# # Locks with doozerd
#
# Doozerd is a little coordination service. I think of it like Zookeeper
# Lite (TM). In today's episode, we'll naively manage exclusive advisory locks.
#
# Disclaimer: If part of this implementation is total lolscale, 
# please to let me know what papers/sources I should read to avoid lolscaling.

therealadam

# # Append-only sets
#
# Dustin Sallings described [how to implement sets in memcached using only
# atomic commands](http://dustin.github.com/2011/02/17/memcached-set.html).
# This implements the necessary encoding/decoding for that
# scheme. You could then use this with a database that doesn't support sets.
#
# N.B. This is a naive implementation (see the pending specs), but it's fun.

# An append-only set is, after all, a set

therealadam

# cassandredis.rb - It makes your Cassandra look like a Redis.

require "cassandra/0.7"

class Cassandredis

  # Connect to a keyspace and column family.
  def initialize(keyspace, cf)
    @client = Cassandra.new(keyspace)
    @cf = cf

therealadam

class QueryTracer < ActiveSupport::LogSubscriber

  ACCEPT = %r{^(app|config|lib)}.freeze
  FRAMES = 5
  THRESHOLD = 300 # In ms

  def sql(event)
    return unless event.duration > THRESHOLD
    callers = Rails.
      backtrace_cleaner.

therealadam

source :rubygems

gem 'sinatra', '1.0'
gem 'oauth2'
gem 'json'

group :development do
  gem 'shotgun'
end

therealadam

class Array
  def map_e(elz, &block)
    results = []
    if length > 0
      each do |o|
        block.call(o)
      end
    else
      elz.call
    end

therealadam

# attribute_mapper is a plugin I worked on a little at FiveRuns
# and later extracted because I think it's rad. It's a better way to do
# enumerated values in your models.
#
# I'm giving it a little love this week. One of the things I'd like to do is
# make it a little cleaner vis a vis contemporary Ruby coding practice. One
# of the changes I'd like to make is to switch to explicitly including
# attribute_mapper in models that use it, rather than having it inject itself
# into every model in your app.
#

therealadam

require 'rubygems'
require 'validatable'

module ValidatableForm
  
  module ClassMethods
    
    def fields
      @fields ||= []
    end