Add function and prefer .iter()

src/handlers/errors.rs

@@ -6,7 +6,7 @@ use serde::{Serialize, Serializer};
 #[derive(Debug)]
 pub enum HandlerError {
     BadUid,
-    ProtectedSchedule
+    ProtectedSchedule,
 }
 
 impl HandlerError {
@@ -16,13 +16,12 @@ impl HandlerError {
             HandlerError::ProtectedSchedule => StatusCode::FORBIDDEN,
         }
     }
-
 }
 
 impl Serialize for HandlerError {
     fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
-        where
-            S: Serializer,
+    where
+        S: Serializer,
     {
         let mut s = serializer.serialize_struct("error", 2)?;
         s.serialize_field("code", &self.get_code().as_u16())?;