Lambda example

lambda_example.rb

class Vehicle
  attr_reader :make, :year
  def initialize(make, year)
    @make =make
    @year = year
  end
end

turbo911 = Vehicle.new("Porshe", 2017)
grandnational = Vehicle.new("Buick", 1987)
gallardo = Vehicle.new("Lamborghini", 2013)
slr = Vehicle.new("Mercedes", 2004)

cars = [turbo911, grandnational, gallardo, slr]

  def sort_car(car, meth)
    car.sort do |a, b|
      meth.call(a) <=> meth.call(b)
    end
  end

  manufacturer = lambda do |car|
    car.make
  end

sorted_cars = sort_car(cars, manufacturer)

puts sorted_cars.inspect