A good intermediary for internal only access of instance variables

salad.rb

# A good intermediary for internal-only access of instance variables
# Here the example is with the access on the 'sauce' instance variable

class Salad

  def initialize(sauce)
    @sauce = sauce
  end
  
  attr_reader :sauce
  private     :sauce
  
  def prepare
    pour(sauce) # sauce can now be privately used with an attr_reader
  end
  
end

# Instead of 
class Salad

  def initialize(sauce)
    @sauce = sauce
  end
  
  def prepare
    pour(@sauce) # @sauce can be privately used but typos will not raised
  end
  
end

@simcap not sure to understand, would you mind looking at this tomorrow together ?

of course ...

private :sauce raises an error if :sauce is not defined, which does not prevent use of instance variables but makes sure the code breaks if accessors aren't defined

is this just a best practices/syntax/teamwork kind of thing or am I missing something ?