Returns a copy of the value. The contents of owned pointers are copied to maintain uniqueness, while the contents of managed pointers are not copied.

Advance the iterator and return the next value. Return None when the end is reached.

Return a lower bound and upper bound on the remaining length of the iterator.

The common use case for the estimate is pre-allocating space to store the results.

Yield an element from the end of the range, returning None if the range is empty.

Return the number of indexable elements. At most std::uint::max_value elements are indexable, even if the iterator represents a longer range.

Return an element at an index