One-argument form See also two-argument form Union
Unique is used to remove duplicated items from a vector. The result is a vector containing all the unique items in the argument, in the order in which they first appear. The argument must be a vector (or scalar).
When the argument is nested, an exact match in data and structure must be found before an item is removed as a duplicate. This operation is affected by ŒCT, the comparison tolerance.
ž'THE QUALITY OF MERCY IS NOT STRAINED' THE QUALIYOFMRCSND ž1 4 17 23 12 4 2 7 99 33 ¯1 4 17 99 100 101 1 4 17 23 12 2 7 99 33 ¯1 100 101 ž'THIS' 'THAT' 'THE' 'OTHER' 'OTHER' 'THAN' 'THIS' 'AND' 'THAT' THIS THAT THE OTHER THAN AND
See also the other 'set' operations: ž Union,
Intersection and
~ Without .