Ruby

Bug #12569

Updated by nobu (Nobuyoshi Nakada) over 9 years ago

In second sample we don't have any warnings or errors with wrong comma after last    attr_accessor attribute and without it is very difficult to identify the typo. initialize method does not performed. 

 ## It works **It works** 
 ```ruby 
 class Solution 
   attr_accessor :one, :two, :three 

   def initialize 
     @one = @two = @three = [] 
     puts "Done!" 
   end 
 end 

 solution = Solution.new 
 p solution.one 
 p solution.two 
 p solution.three 

 **Result:** 
 ``` 
 ## Result: 
 ``` 
 MacBook-Air-Roman% ruby ruby_solution.rb 
 Done! 
 [] 
 [] 
 [] 
 ``` 
 ## it 

 **it does not work work** 
 ```ruby 
 class Solution 
   attr_accessor :one, :two, :three, 

   def initialize 
     @one = @two = @three = [] 
     puts "Done!" 
   end 
 end 

 solution = Solution.new 
 p solution.one 
 p solution.two 
 p solution.three 

 **Result** 
 ``` 
 ## Result 
 ``` 
 MacBook-Air-Roman% ruby ruby_solution.rb 
 nil 
 nil 
 nil 
 ```

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