More Methods for Builtin types

• For Example, Arrays
  • - operator: set difference:

    • [1,2,1,3,5,7]-[1,3] -> [2,5,7]
      

  • | operator: set union:

    • ['a','b','c']|['c','d','a'] -> ['a','b','c','d']
      

  • uniq: returns new array by removing duplicate values:

    • ['a','b','a','c','b'].uniq -> ['a','b','c']