30-seconds-of-code/snippets/for_each_right.md

title, tags, expertise, firstSeen, lastUpdated

title	tags	expertise	firstSeen	lastUpdated
Execute function for each list element in reverse	list	beginner	2020-03-15T12:54:08+02:00	2020-09-15T16:13:06+03:00

Executes the provided function once for each list element, starting from the list's last element.

• Use a for loop in combination with slice notation to execute fn for each element in itr, starting from the last one.

def for_each_right(itr, fn):
  for el in itr[::-1]:
    fn(el)

for_each_right([1, 2, 3], print) # 3 2 1