Rust Compilation failed

[zhaoqidi]

use std::sync::Arc;

use axum::Json;

use dashmap::{DashMap};

use lazy_static::lazy_static;

use serde_json::{json, Value};

pub trait testServer {
fn getOneBronAndCamp(&mut self) ->Json;
}

pub struct RoomServer{
pub BattleTime:f32,
pub sceneId:String,
}

impl testServer for RoomServer{

fn getOneBronAndCamp(&mut self) ->Json {

Json(json!({ "camp": 1, "pos":{"x":30.0, "y":self.BattleTime, "z":60.5}, "index":2}))

}

}

lazy_static!{

pub static ref roomList:Arc<DashMap<String, RoomServer>> = Arc::new(DashMap::new());

}

fn main() {

roomList.insert(String::from("1") , RoomServer { BattleTime: 10.5, sceneId: String::from("852963") });

roomList.insert(String::from("2") , RoomServer { BattleTime: 10.7, sceneId: String::from("741852") });

roomList.insert(String::from("3") , RoomServer { BattleTime: 10.6, sceneId: String::from("753159") });

for item in roomList.iter() {

println!("{}", item.value().sceneId);

}

let v = roomList.get("1");

let binding = v.unwrap();

let roomServer = binding.value();

let info = roomServer.getOneBronAndCamp();

loop {

}

}

[bjorn3]

Please put code between

```rust

and

```

Also could you post the full error message. That makes it easier to help you without having to compile it ourself.

[zhaoqidi]

[Michael-F-Bryan]

That error is saying if you want to call getOneBronAndCamp() (a method taking &mut self), your roomServer variable needs to be an &mut RoomServer.

Keep in mind that DashMap is a concurrent data structure, so it will only hand out shared (&) references. Wrap your RoomServer in a std::sync::Mutex and call the lock() method if you need to update it (i.e. pub static ref roomList:Arc<DashMap<String, Mutex<RoomServer>>>).