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Oct 18th, 2018
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  1. # haha, YES!
  2.  
  3. class MyNumber; @@number = 0; def +@; @@number += 1; end; end
  4.  
  5. number = MyNumber.new
  6. # => #<MyNumber:0x000001008fb460>
  7.  
  8. ++number
  9. # => 1
  10. ++number
  11. # => 2
  12. ++number
  13. # => 3
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