Ruby循序渐进(二): 重写类的to_s方法

# override to_s method


class Thing
    def set_name(aName)
        @name = aName
    end
    
    def get_name
        return @name
    end
end

class Treasure
    def initialize(aName, aDescription)
      @name = aName
      @description = aDescription
    end
    
    def to_s # override default to_s method
        "The #{@name} Treasure is #{@description}\n"
    end
end

thing1 = Thing.new
thing1.set_name("A lovely Thing")
puts thing1.get_name
puts thing1.to_s

t1 = Treasure.new("Sword", "an Elvish weapon forged of gold")
t2 = Treasure.new("Ring", "a magic ring of great power")
puts t1.to_s
puts t2.to_s
# The inspect method lets you look inside an object
puts "Inspecting 1st treasure: #{t1.inspect}"