gives the last element in expr.
gives the last element if there are any elements, or def otherwise.
- Last[expr] is equivalent to expr[[-1]].
- Last has attribute HoldRest. In Last[expr,def], def is evaluated only if it is to be returned.
Examplesopen allclose all
Basic Examples (5)
Extract the last element of a list:
Extract the last row of a matrix:
Extract the last element of an association:
The head need not be List:
Return x if there are zero elements:
Generalizations & Extensions (1)
Properties & Relations (1)
Last[expr] is equivalent to expr[[-1]]:
Possible Issues (2)
The expression is evaluated before Last is applied:
Last always operates on the FullForm of expressions:
Introduced in 1988
Updated in 2014