Specify Dart types explicitly

This makes the code more readable.

1 files changed, 3 insertions, 3 deletions

diff --git a/lib/main.dart b/lib/main.dart
index ae5ab3b..34eab88 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -25,7 +25,7 @@ class Contact {
 class ContactList extends StatelessWidget {
   const ContactList({super.key});
 
-  final List<Contact> contacts = const [
+  final List<Contact> contacts = const <Contact>[
     Contact(address: "Living Room Window", isOpen: false),
     Contact(address: "Front Door", isOpen: true),
     Contact(address: "Back Door", isOpen: false),
@@ -38,8 +38,8 @@ class ContactList extends StatelessWidget {
       appBar: AppBar(title: const Text("Contacts")),
       body: ListView.builder(
         itemCount: contacts.length,
-        itemBuilder: (context, index) {
-          final contact = contacts[index];
+        itemBuilder: (BuildContext context, int index) {
+          final Contact contact = contacts[index];
           return ContactTile(contact: contact);
         },
       ),