restructure and document list_users

app/src/pages/mod.rs

@@ -1,3 +1,28 @@
 pub mod home;
 pub mod list_links;
 pub mod list_users;
+
+
+/// Unwrap a result and return it's content, or return from the function with another expression.
+#[macro_export]
+macro_rules! unwrap_or_return {
+    ( $e:expr, $result:expr) => {
+        match $e {
+            Ok(x) => x,
+            Err(_) => return $result,
+        }
+    };
+}
+
+/// Unwrap a result and return it's content, or return from the function with another expression.
+#[macro_export]
+macro_rules! unwrap_or_send {
+    ( $e:expr, $result:expr, $orders:expr) => {
+        match $e {
+            Some(x) => x,
+            None => {
+                $orders.send_msg($result);
+                return;},
+        }
+    };
+}