Ruby attr_accessor 使用，Ruby @成員變數 與 臨時變數

#Class describ ------rdoc rules
#= headers
#this is header content
#== sub header
# this is sub header content
#=== sub sub header
# this is sub sub header
class Animal

 attr_accessor :name    #-------------①
 
#this is the comment for the  'new' method !
 
def initialize type
    name = type         #-------------②
 end

#this is comment for 'shout' method 
 # Second Line
 #* this is sub line 1
 #* this is sub line 2
 
def shout
if name == 'dog'
        puts "wang! wang!"
    elsif name == 'cat'
        puts "miao! miao!"    
    elsif name ==nil
        puts "nil"
else
        puts "kao!"
    end    
 end

end

dog = Animal.new "dog"
puts dog.name
dog.shout
dog.name= "cat"
dog.shout

本程式輸出為：

nil

miao! miao!

-----------------

①： 成員變數

②： 臨時變數

attr_accessor 表示後面的為類成員，同時為其提供外部存取能力。即相當於為其提供 get;  set;