tree_table/types/
cycling_counter.rs

1#[derive(Debug, Clone)]
2pub struct CyclingCounter {
3    current: usize,
4}
5
6impl CyclingCounter {
7    /// Creates a new `CyclingCounter` starting at 0.
8    pub fn new() -> Self {
9        CyclingCounter { current: 0 }
10    }
11}
12
13impl Iterator for CyclingCounter {
14    type Item = usize;
15
16    /// Returns the next `usize` value, cycling back to 0 after `usize::MAX`.
17    fn next(&mut self) -> Option<Self::Item> {
18        let current = self.current;
19        self.current = self.current.wrapping_add(1);
20        Some(current)
21    }
22}

tree_table/types/cycling_counter.rs

tree_table/types/
cycling_counter.rs