5 use crate::iter::plumbing::{Folder, UnindexedProducer};
23     fn fold_splits<F>(self, separator: &P, folder: F, skip_last: bool) -> F  in fold_splits()
25         F: Folder<Self>,  in fold_splits()
43     pub(super) fn fold_with<F>(self, folder: F, skip_last: bool) -> F  in fold_with()
45         F: Folder<V>,  in fold_with()
55             data.fold_splits(separator, folder, skip_last)  in fold_with()
60             let folder = left.fold_splits(separator, folder, false);  in fold_with()  localVariable
61             if skip_last || folder.full() {  in fold_with()
62                 folder  in fold_with()
64                 folder.consume(right)  in fold_with()
69                 folder  in fold_with()
71                 folder.consume(data)  in fold_with()
126     fn fold_with<F>(self, folder: F) -> F  in fold_with()
128         F: Folder<Self::Item>,  in fold_with()
130         self.fold_with(folder, false)  in fold_with()