Expand description
A fast and simple iterator adapter that allows peeking with any depth:
use peeking_iter::peeking::*;
fn main() {
let mut it = PeekingIter::new(0..=2);
assert_eq!(it.next(), Some(0));
assert_eq!(it.peek(), Some(1));
assert_eq!(it.peek(), Some(2));
assert_eq!(it.next(), Some(1));
assert_eq!(it.peek(), Some(2));
assert_eq!(it.peek(), None);
}
§Why?
- ~1.5x faster than itertools’
MultiPeek
- Has useful methods initially designed with lexing and parsing in mind (see
Parser
)