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Jan 22nd, 2018
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  1. >> class MyArray < Array; end
  2. => nil
  3.  
  4. >> a = MyArray.new([1,2,3])
  5. => [1, 2, 3]
  6.  
  7. >> a.class
  8. => MyArray
  9.  
  10. >> a.reject {|x| x > 2}.class
  11. => MyArray
  12.  
  13. >> a.select {|x| x > 2}.class
  14. => Array
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