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unique -- eliminate duplicates from a list

unique v -- yields the elements of the list v, without duplicates.

i1 : unique {3,2,1,3,2,4,3,2,3,-2,1,2,4}

o1 = {1, 2, 3, 4, -2}

o1 : List

The order of elements is not necessarily maintained.

See also:

  • sort -- sort a list
  • Class of returned value: List -- the class of all lists -- {...}Code:

         -- code for unique:
         -- ../m2/set.m2:56
         unique = x -> keys set x

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