From 31446c8e6c5e13ba981aacc1d6f2b5ca7240dc96 Mon Sep 17 00:00:00 2001
From: junior-od <opeyemi.oduberu@gmail.com>
Date: Tue, 6 Jan 2026 14:08:55 +0100
Subject: [PATCH] Interests:  used filterIsInstance to find the TopicNavKey and
 get its ID instead of explicit type check and cast approach.

---
 .../feature/interests/impl/InterestsViewModel.kt             | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/feature/interests/impl/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/interests/impl/InterestsViewModel.kt b/feature/interests/impl/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/interests/impl/InterestsViewModel.kt
index 7bf709b3e..afda1a453 100644
--- a/feature/interests/impl/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/interests/impl/InterestsViewModel.kt
+++ b/feature/interests/impl/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/interests/impl/InterestsViewModel.kt
@@ -48,8 +48,9 @@ class InterestsViewModel @AssistedInject constructor(
     private val selectedTopicId: StateFlow<String?> =
         snapshotFlow {
             navigationState.currentSubStack
-                .lastOrNull { it is TopicNavKey }
-                ?.let { (it as TopicNavKey).id }
+                .filterIsInstance<TopicNavKey>()
+                .lastOrNull()
+                ?.id
         }.stateIn(
             scope = viewModelScope,
             started = SharingStarted.WhileSubscribed(5_000),