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  1. class Enumerable
  2.   def palindrome?
  3.     return self == self.reverse_each
  4.   end
  5. end
  6.  
  7. print [1,2].respond_to?("palindrome?")
Runtime error #stdin #stdout 0s 4760KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
https://ideone.com/wAaZO
language:
Ruby (ruby 2.5.5)
created:
14 years ago
visibility:
public

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