Haskell has quite a few partial functions in the standard library if I recall. Bog standard (!!), head, and tail for lists; fromJust to unwrap Maybes; and even

Haskell has quite a few partial functions in the standard library if I recall. Bog standard (!!), head, and tail for lists; fromJust to unwrap Maybes; and even some more interesting examples like "all" which mightn't work on infinite lists. Indeed any Turing-complete language includes partial functions of that final variety.