:: [a] -> a package:ghc-lib-parser

Extract the last element of a list, which must be finite and non-empty. WARNING: This function is partial. Consider using unsnoc instead.

Examples

>>> last [1, 2, 3]
3

>>> last [1..]
* Hangs forever *

>>> last []
*** Exception: Prelude.last: empty list

Utility function to go from a singleton list to it's element. Wether or not the argument is a singleton list is only checked in debug builds.