Drop

Drop[list, n]
gives list with its first n elements dropped.

Drop[list, -n]
gives list with its last n elements dropped.

Drop[list, {n}]
gives list with its n^(th) element dropped.

Drop[list, {m, n}]
gives list with elements m through n dropped.

Drop[list, {m, n, s}]
gives list with elements m through n in steps of s dropped.

Drop[list, seq1, seq2, ...]
gives a nested list in which elements specified by have been dropped at level i in list.

DetailsDetails

  • Drop uses the standard sequence specification:
  • Allall elements
    Noneno elements
    nelements 1 through n
    -nlast n elements
    {n}element n only
    {m,n}elements m through n inclusive
    {m,n,s}elements m through n in steps of s
  • Drop can be used on an object with any head, not necessarily List.
  • For a matrix, Drop[list, seq1, seq2] effectively drops all elements except those in a submatrix of list.
  • Drop works on SparseArray objects.
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