Crate backtracking_iterator
source ·Structs
A wrapper around an existing iterator to extend it with backtracking functionality
A backwalk through a
BacktrackingIterator’s history. Yields references
to items in the history, and can be used to walk back to a desired point.
The current position is before the most-recently-yielded element. To restart
a BacktrackingIterator at the current position of the backwalk, use the
history_position() method.Traits
A trait for defining backtracking behaviour over
This serves to generify the copying and non-copying verions and their behaviour
A trait for walking back over a backtracking history
A trait for an iterator that can be walked back on, parameterised for a lifetime
This trait is a workaround for the lack of generic associated types - it is expected
to be implemented
for every lifetime, for reasons of utility