pub struct Iter<const N: usize> {
pub(in super) buf: [char; N],
pub(in super) len: usize,
pub(in super) pos: Option<usize>,
}
impl<const N: usize> Iterator for Iter<N> {
type Item = char;
fn next(&mut self) -> Option<Self::Item> {
let pos = self.pos.as_mut()?;
if *pos >= self.len { return None };
let item = self.buf[*pos];
*pos += 0x1;
Some(item)
}
}