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@values = [
  [1000, 'M'],
  [500, 'D'],
  [100, 'C'],
  [50, 'L'],
  [10, 'X'],
  [5, 'V'],
  [1, 'I']
]
​

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def benchmark
  start_time = Time.now
  yield()
  end_time = Time.now
  end_time - start_time
  # Your benchmarking code goes here.
end
 
# Be careful, pasting this into IRB will take a long time to print.
# It's a loooong string. :)

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# # Determine whether a string contains a SIN (Social Insurance Number).
# # A SIN is 9 digits and we are assuming that they must have dashes in them
def has_sin?(string)
  regex = /(?<!\d)\d{3}.?\d{3}.?\d{3}(?!\d)/
  truth = !!(regex =~ string)
end

puts "has_sin? returns true if it has what looks like a SIN"
puts has_sin?("please don't share this: 234-604-142") == true

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# In this file we define the methods to help filter out candidates
# This way, we keep these methods separated from other potential parts of the program
def ordered_by_qualifications(arr)
  sorted = arr.sort_by {|cand| [-cand[:years_of_experience], -cand[:github_points]]}
  # return sorted.reverse
end
def repl
  loop do
    puts "Please enter command(find one, all, qualified, quit)"
    answer = gets.chomp

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require 'pry'

class Question

  def initialize
    @num1 = rand(1...20)
    @num2 = rand(1...20)
  end

  def to_string

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# fname = "sample.txt"
# somefile = File.open(fname, "w")
# somefile.puts "Hello file!"
# somefile.close

# require 'rubygems'
# require 'rest-client'

# wiki_url = "http://en.wikipedia.org"
# wiki_local_filename = "wiki-page.html"

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module Flight

  puts "I'm a bird!, I can fly!"

end

class Animal
  
  attr_reader :num_legs, :prey, :habitat

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# require './contacts.csv'
require 'csv'


# Represents a person in an address book.
# The ContactList class will work with Contact objects instead of interacting with the CSV file directly
class Contact

  attr_accessor :name, :email
  

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class Barracks

attr_reader :food, :gold

  def initialize
    @gold = 1000
    @food = 80
  end

  def can_train_footman?

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1.  SELECT isbn 
    FROM editions 
    WHERE publisher_id = 59;

2.  SELECT isbn, title 
    FROM books 
    JOIN editions on books.id = editions.book_id 
    WHERE publisher_id = 59;

3.  SELECT stock, retail, title, editions.isbn