这是我的代码:
struct Node<T> {
data: T,
next: Option<Box<Node<T>>>,
}
impl<T> Node<T> {
fn new(data : T) -> Node<T> {
Node { data: data, next: None }
}
fn new_with_next(data: T, next: Option<Box<Node<T>>>) -> Node<T> {
Node { data: data, next: next }
}
}
struct LinkedList<T> {
head: Box<Node<T>>,
size: u8,
}
impl<T> LinkedList<T> {
fn new(data: T) -> LinkedList<T> {
let new_node = Node::new(data);
let head = Box::new(new_node);
LinkedList { head: head, size: 1 }
}
fn insert(&mut self, data: T) {
let mut next = Some(self.head); // <-- error here
let new_node = Node::new_with_next(data, next);
self.head = Box::new(new_node);
self.size += 1;
}
}
I get this error:
src\linked_list.rs:28:29: 28:33 error: cannot move out of borrowed content [E0507]
src\linked_list.rs:28 let next = Some(self.head);
^~~~
我不理解这个错误,也不知道如何解决它。我尝试将
self.head
引用传递给Some
,但是在Some
中我更改了数据类型。