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#!/usr/bin/env ruby

command = '/usr/bin/passenger-memory-stats'
memory_limit = 200 # megabytes

def running?(pid)
  begin
    return Process.getpgid(pid) != -1
  rescue Errno::ESRCH
    return false

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module Library
  def self.leaf_paths_of(paths)
    paths.select{|path|
      !paths.any?{|other|         
        other.start_with?(path + '/')
    }
  end
end

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    guard 'annotate' do
      watch( 'db/schema.rb' )
      # Uncomment the following line if you also want to run annotate anytime
      # a model file changes
      #watch( 'app/models/**/*.rb' )
    end

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require 'net/http'   # CODE FROM: https://github.com/mwmitchell/rsolr/blob/master/lib/rsolr/connection.rb
require 'net/https'

# The default/Net::Http adapter for RSolr.
class RSolr::Connection

  # using the request_context hash,
  # send a request,
  # then return the standard rsolr response hash {:status, :body, :headers}
  def execute client, request_context

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GIT
  remote: git://github.com/AlessandroBerardi/activerecord_null_object.git
  revision: b042c43b8cafb753300a13f2aaeeeaf6c79558f2
  branch: rails_3_2
  specs:
    activerecord_null_object (0.3.0)
      activerecord (~> 3.2.11)
      activesupport (~> 3.2.11)

GIT

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source 'https://rubygems.org'

gem 'ruleby', github: 'Codalytics/ruleby'
gem 'q_rules', path: 'q_rules'

#####################################
# Core Infrastructure
#####################################
gem 'rails', '~> 3.2.12'
gem 'json', '>= 1.7.7' # Required to fix Denial of Service and Unsafe Object Creation Vulnerability in JSON [CVE-2013-0269]

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class Filter
  include FormObject

  # Proc because Date.yesterday changes every day :)
  attribute :from, Date, default: Proc.new { Date.yesterday }
  attribute :to, Date, default: Proc.new { 1.month.from_now - 1.day }
end

# in controller
@filter = Filter.new(params[:filter])

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class Client < ActiveRecord::Base
  belongs_to :pricing_level
end

class PricingLevel
  def self.find_default
    #...
  end
end

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class CoursesController < ApplicationController
  expose(:course, attributes: :course_params)
  expose(:current_course) { current_user.courses.find_by_id(params[:id] || params[:course_id]) }
  expose(:first_of_each_month_of_course) {  (current_course.start_date.change(day: 1)..current_course.end_date).select{ |d| d.day == 1 }  }

  # ...
end

# Orginal code gives:
# line 4 of [PROJECT_ROOT]/app/controllers/courses_controller.rb: block in <class:CoursesController>

adz

the next common error is likely from side effects: "How did the value of this variable change?!"  
immutability...