小编Hos*_*deh的帖子

这是我的html标签：

<input class="editable-input" ng-model="ac.accesses.permision.alias" ng-disabled="true">

但输入标签不会禁用。

如何在 Rust 函数中返回 Null？

#[derive(Debug, Clone)]
struct NodeValue {
    id: String,
    parent: String,
    children: Vec<NodeValue>,
}

impl NodeValue {
    fn find_parent(&self, id: &mut String) -> &NodeValue {
        if self.id == *id {
            println!("{},{}", self.id, id);
            return self;
        }
        for child in &self.children {
            println!("{:?}", child);
            let res = child.find_parent(id);
            return res;
        }

        return null; //return null
    }
}

fn main() {
    let root = NodeValue {
        id: "#".to_string(),
        parent: String::from("root"),
        children: vec![],
    };

    let id = "1";
    let mut parent …