Class variable as condition variable : Class Defintion « Class « Ruby






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  3. Class Defintion

Class variable as condition variable


class House

  @@current_temp = 70

  attr_accessor :atomic_number

  def House.current_temp=(x)
    @@current_temp = x
  end

  def House.current_temp
    @@current_temp
  end

  def hot?
    @@current_temp >= @melting
  end

  def initialize(atnum, melt)
    @atomic_number = atnum
    @melting = melt
  end

end



app = House.new(13, 1236)
app2 = House.new(29, 1982)
app3 = House.new(79, 1948)

House.current_temp = 1600

puts app.hot?        # true
puts app2.hot?          # false
puts app3.hot?            # false

House.current_temp = 2100

puts app.hot?        # true
puts app2.hot?          # true
puts app3.hot?            # true








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