| /// An iterator whose items are random accessible efficiently |
| /// |
| /// # Safety |
| /// |
| /// The iterator's .len() and size_hint() must be exact. |
| /// `.len()` must be cheap to call. |
| /// |
| /// .get_unchecked() must return distinct mutable references for distinct |
| /// indices (if applicable), and must return a valid reference if index is in |
| /// 0..self.len(). |
| #[doc(hidden)] |
| pub unsafe trait TrustedRandomAccess : ExactSizeIterator { |
| unsafe fn get_unchecked(&mut self, i: usize) -> Self::Item; |
| /// Returns `true` if getting an iterator element may have |
| /// side effects. Remember to take inner iterators into account. |
| fn may_have_side_effect() -> bool; |
| } |
