使用＆＃34;？＆＃34;初始化实例变量时

Question

我想让sushiable?返回initialise中设置的实例变量，但我似乎无法让它工作。我做错了什么？

attr_accessor :weight, :value, :sushiable?

def initialize (weight,value, sushiable?)
  @weight = weight
  @value = value
  @sushiable = sushiable?
end

# def sushiable?
#   false
# end

Answer 1

使用?仅对方法名称有效，对变量无效。所以，正确的方法是：

attr_accessor :weight, :value, :sushiable

def initialize (weight, value, sushiable)
  @weight = weight
  @value = value
  @sushiable = sushiable
end

def sushiable?
  sushiable
end