In the given image on Line 25, I was expected as_mut() to give error like cannot borrow node.next as mutable, as it is not declared as mutable.
I know my understanding is wrong but I'm not able to figure it out.
In order to call as_mut() all you need is an &mut reference. Since node is an &mut reference, you can borrow one of its fields. Note that node itself doesn't need to be declared mut in the if let because you are not replacing the &mut reference stored in node.
4 Likes
This topic was automatically closed 90 days after the last reply. We invite you to open a new topic if you have further questions or comments.