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use super::Path; impl<'a> Path<'a> for &'a String { type Item = &'a str; type Iter = StrSliceIter<'a>; fn path(self) -> Self::Iter { if self.is_empty() { StrSliceIter::Empty } else { StrSliceIter::NonEmpty(self.split("/")) } } } pub enum StrSliceIter<'a> { Empty, NonEmpty(std::str::Split<'a, &'a str>), } impl<'a> Iterator for StrSliceIter<'a> { type Item = &'a str; fn next(&mut self) -> Option<Self::Item> { match *self { StrSliceIter::Empty => None, StrSliceIter::NonEmpty(ref mut inner) => inner.next(), } } }