1 use crate::iter::FromIterator;
3 /// Collapses all unit items from an iterator into one.
5 /// This is more useful when combined with higher-level abstractions, like
6 /// collecting to a `Result<(), E>` where you only care about errors:
10 /// let data = vec![1, 2, 3, 4, 5];
11 /// let res: Result<()> = data.iter()
12 /// .map(|x| writeln!(stdout(), "{x}"))
14 /// assert!(res.is_ok());
16 #[stable(feature = "unit_from_iter", since = "1.23.0")]
17 impl FromIterator<()> for () {
18 fn from_iter<I: IntoIterator<Item = ()>>(iter: I) -> Self {
19 iter.into_iter().for_each(|()| {})