ruby - Attr_accessor in Node Class -

i understand in ruby, attr_accessor key creates getter/setter methods. example,

attr_accessor :data

def data=(value)   @data = value end  def data   @data end 

so, if case, node class why need create initialize method?

ex:

def initialize(data, next_node)  @data = data;  @next_node = next_node; 

couldn't write att_accessor :data, next_node?

with initialize method can write:

node = node.new('foo', node) 

without (and attr_accessor) need write:

node = node.new node.data = 'foo' node.next_node = node 

to answer question: there no need initialize method, more convenient use.