30-seconds-of-code/snippets/find-last.md

title, type, tags, cover, dateModified

title	type	tags	cover	dateModified
Find last matching value	snippet	list	tropical-waterfall	2020-11-02T19:27:53+02:00

Finds the value of the last element in the given list that satisfies the provided testing function.

• Use a list comprehension and next() to return the last element in lst for which fn returns True.

def find_last(lst, fn):
  return next(x for x in lst[::-1] if fn(x))

find_last([1, 2, 3, 4], lambda n: n % 2 == 1) # 3