Add minimal example, some formatting, bump parking_lot version

src/lib.rs

@@ -1,6 +1,12 @@
+use std::borrow::Cow;
+use std::collections::HashMap;
+use std::fmt::{self, Display, Formatter};
+use std::marker::PhantomData;
+use std::ops::Add;
+use std::time::{Duration, Instant};
+
 use parking_lot::{Mutex, RwLock, RwLockUpgradableReadGuard};
 use rand::{rngs::OsRng, Rng};
-
 use rocket::{
     fairing::{self, Fairing, Info},
     http::{Cookie, Status},
@@ -9,13 +15,6 @@ use rocket::{
     Build, Request, Response, Rocket, State,
 };
 
-use std::borrow::Cow;
-use std::collections::HashMap;
-use std::fmt::{self, Display, Formatter};
-use std::marker::PhantomData;
-use std::ops::Add;
-use std::time::{Duration, Instant};
-
 /// Session store (shared state)
 #[derive(Debug)]
 pub struct SessionStore<D>
@@ -134,11 +133,10 @@ where
                 let store_ug = store.inner.upgradable_read();
 
                 // Resolve session ID
-                let id = if let Some(cookie) = request.cookies().get(&store.config.cookie_name) {
-                    Some(SessionID(cookie.value().to_string()))
-                } else {
-                    None
-                };
+                let id = request
+                    .cookies()
+                    .get(&store.config.cookie_name)
+                    .map(|cookie| SessionID(cookie.value().to_string()));
 
                 let expires = Instant::now().add(store.config.lifespan);
 
@@ -200,7 +198,7 @@ where
                     new_id
                 }
             }),
-            store: store,
+            store,
         })
     }
 }