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  def colorful? (number)
    colorful_numbers = [ 0, 1, 23, 263, 987 ]
    #not_colorful_numbers = [ 10, 236, 999 ]

      if number != number.to_i
        return false
      elsif colorful_numbers.include?(number)
        return true

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def visa?(card)
  # TODO: A visa card starts with a 4

   if card.gsub(" ", "")[0] == "4" && card.gsub(" ", "").length == 16
      return true
    else
      return false
    end

end

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class Restaurant
  # TODO: add relevant accessors if necessary
  attr_reader :average_rating, :city
  attr_writer :ratings # :restaurants

  def self.filter_by_city(restaurants, city)
        restaurants.select{|rest| rest.city == city }
  end

  def initialize(city, name)

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class Animal

  def name(name)
    @name = name
    # TODO: what should this method return?
    self
  end

  def species(species)
    @species = species

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class Animal

  def name(name)
    @name = name
    # TODO: what should this method return?
    self
  end

  def species(species)
    @species = species

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require 'gosu'
# require_relative 'player'
# require_relative 'star'

module ZOrder
  BACKGROUND, STARS, PLAYER, UI = *0..3
end

class Tutorial < Gosu::Window
  def initialize

matoni109

require 'gosu'
# require_relative 'player'
# require_relative 'star'

module ZOrder
  BACKGROUND, STARS, PLAYER, UI = *0..3
end

class Tutorial < Gosu::Window
  def initialize

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require 'csv'
require_relative 'recipe'

class Cookbook # or DATABASE
    attr_reader :recipes

  def initialize(csv_filepath)
    @recipes = [] # array of Task Instances
    @csv_filepath = csv_filepath
    load_csv(@csv_filepath)

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require 'open-uri'
require 'json'

def generate_grid(grid_size)
  # TODO: generate random grid of letters

  gen_grid = ('A'..'Z').to_a + ('A'..'N').to_a
  gen_grid.sample(grid_size)

end

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require 'csv'
require_relative '../models/meal'
require "pry-byebug"

# ../../data

class MealRepository
  # ID and NAME and CURED and ROOM_ID

  def initialize(csv_file)