X-Git-Url: https://git.ralfj.de/rust-101.git/blobdiff_plain/1a691352b57b7338388ff568403495ecb44272eb..a3a64118702b4f75691de78d42256c306f286014:/workspace/src/part16.rs?ds=inline diff --git a/workspace/src/part16.rs b/workspace/src/part16.rs index d0b173a..fa5b184 100644 --- a/workspace/src/part16.rs +++ b/workspace/src/part16.rs @@ -42,7 +42,7 @@ impl LinkedList { // Create the new node, and make it a raw pointer. let new = Box::new( Node { data: t, next: ptr::null_mut(), prev: self.last } ); let new = box_into_raw(new); - // Update other points to this node. + // Update other pointers to this node. if self.last.is_null() { debug_assert!(self.first.is_null()); // The list is currently empty, so we have to update the head pointer. @@ -61,7 +61,7 @@ impl LinkedList { // and return `Option`. // Next, we are going to provide an iterator. - pub fn iter_mut(&self) -> IterMut { + pub fn iter_mut(&mut self) -> IterMut { IterMut { next: self.first, _marker: PhantomData } } } @@ -80,7 +80,7 @@ impl<'a, T> Iterator for IterMut<'a, T> { if self.next.is_null() { None } else { - // Otherwise, we can convert the next pointer to a borrow, get a borrow to the data + // Otherwise, we can convert the next pointer to a reference, get a reference to the data // and update the iterator. let next = unsafe { &mut *self.next }; let ret = &mut next.data; @@ -90,13 +90,14 @@ impl<'a, T> Iterator for IterMut<'a, T> { } -// **Exercise 16.2**: Add a method `iter` and a type `Iter` providing iteration for shared borrows. +// **Exercise 16.2**: Add a method `iter` and a type `Iter` providing iteration for shared references. // Add testcases for both kinds of iterators. // ## `Drop` + impl Drop for LinkedList { // The destructor itself is a method which takes `self` in mutably borrowed form. It cannot own `self`, because then - // the destructor of `self` would be called at the end pf the function, resulting in endless recursion... + // the destructor of `self` would be called at the end of the function, resulting in endless recursion. fn drop(&mut self) { let mut cur_ptr = self.first; while !cur_ptr.is_null() {