Rework state example to put Arc inside State

Author: joshtriplett

examples/state.rs

@@ -1,34 +1,33 @@
 use std::sync::atomic::{AtomicU32, Ordering};
 use std::sync::Arc;
 
+#[derive(Clone)]
 struct State {
-    value: AtomicU32,
+    value: Arc<AtomicU32>,
 }
 
 impl State {
     fn new() -> Self {
         Self {
-            value: AtomicU32::new(0),
+            value: Arc::new(AtomicU32::new(0)),
         }
     }
 }
 
 #[async_std::main]
 async fn main() -> tide::Result<()> {
     tide::log::start();
-    let mut app = tide::with_state(Arc::new(State::new()));
-    app.at("/")
-        .get(|req: tide::Request<Arc<State>>| async move {
-            let state = req.state();
-            let value = state.value.load(Ordering::Relaxed);
-            Ok(format!("{}\n", value))
-        });
-    app.at("/inc")
-        .get(|req: tide::Request<Arc<State>>| async move {
-            let state = req.state();
-            let value = state.value.fetch_add(1, Ordering::Relaxed) + 1;
-            Ok(format!("{}\n", value))
-        });
+    let mut app = tide::with_state(State::new());
+    app.at("/").get(|req: tide::Request<State>| async move {
+        let state = req.state();
+        let value = state.value.load(Ordering::Relaxed);
+        Ok(format!("{}\n", value))
+    });
+    app.at("/inc").get(|req: tide::Request<State>| async move {
+        let state = req.state();
+        let value = state.value.fetch_add(1, Ordering::Relaxed) + 1;
+        Ok(format!("{}\n", value))
+    });
     app.listen("127.0.0.1:8080").await?;
     Ok(())
 }