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Drop

gives list with its first n elements dropped.

gives list with its last n elements dropped.

gives list with its n

element dropped.

gives list with elements m through n dropped.

gives list with elements m through n in steps of s dropped.

gives a nested list in which elements specified by

have been dropped at level i in list.

MORE INFORMATION

Drop uses the standard sequence specification:

	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 effectively drops all elements except those in a submatrix of list.

Drop works on SparseArray objects.

Basic Examples (3)

Drop the first 2 elements from a list:

Drop the last 3 elements:

Drop elements 2 through 4:

Drop the first 2 elements from a list:

Out[1]=

Drop the last 3 elements:

Out[1]=

Drop elements 2 through 4:

Out[1]=

Drop elements from the third to the third-to-last:

Drop every other element:

Drop the first row of a matrix:

Drop the first row, and the first two columns:

Drop none of the rows, but the first two columns:

Drop rows 2 through 4 and columns 3 through 5:

Drop every other row and every third column:

Generalizations & Extensions (2)

Drop works with any head, not just List:

Drop works with SparseArray objects:

Applications (1)

Pick out a subimage:

Properties & Relations (3)

Drop and Take are complementary:

Rest is a special case of Drop:

Most is a special case of Drop:

Possible Issues (1)

Drop always gives a list, even if only one element remains:

Rest Most StringDrop Take Span Cases Delete Insert

Getting Pieces of Lists

Manipulating Lists by Their Indices

NKS|Online (A New Kind of Science)

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