BUILT-IN MATHEMATICA SYMBOL

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 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.

Details Details

	All	all elements
	None	no elements
	n	elements 1 through n
	-n	last 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.