所以我写了一个模块函数来将'falsey'和'truthy'值转换为true和false。为了做到这一点，我使用了一个case表达式，据我所知，它基本上就是a big elseif statement that uses the === function，其中的===操作符用于比较集合。从Ruby documentation中，我能真正找到的==和===之间的唯一区别是==========================================================================================================================================================我也理解everything is a method call in ruby，所以我们不能假设等式/包容方法是可交换的。
当使用case语句按类排序时，我会猜测==和===的功能是相同的，但我发现当按类排序时，case语句从未将我的输入放入正确的“bin”中。在这一点上，我切换到使用==，它确实工作，所以我想知道为什么会这样，因为我正在比较我假设实际上是一个“”的类。苹果与苹果的比较

module FirstTry
  def self.to_boolean(uncertain_value, to_integer: false)
    case uncertain_value.class
    when String
      value = ActiveRecord::Type::Boolean.new.cast(uncertain_value)
      return 1 if to_integer == true && value == true
      return 0 if to_integer == true && value == false
      return boolean_value
    when TrueClass
      return 1 if to_integer == true
      return true
    when FalseClass
      return 0 if to_integer == true
      return false
    when NilClass
      return 0 if to_integer == true
      return false
    end
    # I did not originally include this part of the code in the question
    raise 'Conversion Failed: No rules for converting that type of input into a boolean.'
  end
end

module SecondTry
  def self.to_boolean(uncertain_value, to_integer: false)
    if uncertain_value.class == String
      boolean_value = ActiveRecord::Type::Boolean.new.cast(uncertain_value)
      return 1 if to_integer == true && boolean_value == true
      return 0 if to_integer == true && boolean_value == false
      return boolean_value
    elsif uncertain_value.class == TrueClass
      return 1 if to_integer == true
      return true
    elsif uncertain_value.class == FalseClass
      return 0 if to_integer == true
      return false
    elsif uncertain_value.class == NilClass
      return 0 if to_integer == true
      return false
    end
    # I did not originally include this part of the code in the question
    raise 'Conversion Failed: No rules for converting that type of input into a boolean.'
  end
end