class_methods.rb

class Restaurant
  attr_reader :name
  def initialize(name, city)
    @name, @city = name, city
  end

  def self.categories
    return %w(fast-food gastronomic traditional)
  end

  def self.prices
    return ["fast-food: 10€", "gastronomic: 50€", "traditional: 25€"]
  end

  def to_s
    return "Welcome to #{@name}, in #{@city}"
  end
end
# puts Time.now
# require "json"
# puts JSON.parse('{"key1": "value1", "key2": "value2"}')
# puts Restaurant.categories
# resto = Restaurant.new("l'alicheur", "Paris")
# puts resto.categories
puts Restaurant.prices
# => fast-food: 10€
# => gastronomic: 50€
# => traditional: 25€