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  require 'pry'
  # require 'pry-nav'

  def to_roman(num)
     @roman_num = ""
     @num = num
     roman_M(@num)
     roman_D(@num)
     roman_C(@num)
     roman_L(@num)

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def benchmark
  # Your benchmarking code goes here.
  
  start_time = Time.now
  yield 
  end_time = Time.now
  running_time = end_time - start_time

end
 

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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)
  !( /\b(\d){3}-(\d){3}-(\d){3}\b/ =~ string ).nil?
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
 
puts "has_sin? returns false if it doesn't have a SIN"

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require 'pry'

class Exchange

  def initialize x_client

    bottles_earned = {by_empty: 0, by_tips: 0}

    bottles_earned[:by_empty] += x_client.bottles_empty/2
    x_client.bottles_empty = x_client.bottles_empty%2 

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require 'active_support/all'

@candidates = [
  {
    id: 5,
    years_of_experience: 4,
    github_points: 293,
    languages: ['C', 'Ruby', 'Python', 'Clojure'],
    date_applied: 5.days.ago.to_date,
    age: 26

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require 'rspec'

RSpec.configure do |config|
  config.color = true
end
#classes experiment!!!
module Flight
   def fly
    print("I'm #{self.class}, Sure I can fly")
  end

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class Comment

  attr_accessor :content

    def initialize (content)
      @content = content
    end
end

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-- double dash is comment in SQL

--################ Exercise 5 ################

SELECT e.isbn, b.title, s.stock, s.retail, 
  CASE e.type 
  WHEN 'p' THEN 'Paperback' 
  WHEN 'h' THEN 'Hardcover' 
  END AS cover 
FROM editions AS e INNER JOIN publishers AS p ON (e.publisher_id = p.id)

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// Why does this fail?

var a = 0;

//if comparator was using equal only '='
if (a === 1) {
    console.log("I Shouldn't be in here!");
} else {
    console.log("I Should be in here!");    
}

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var output = []

var arrayOfLight = function (x) {

  for (i = 0; i <= x; i++){
    output.push(i);

  }

  return output;