commit 711eb99b06b7c50ef07d4802a6a3199589ddabc1
author Jason Simmons <jason-simmons@users.noreply.github.com> Thu Oct 25 09:29:37 2018 -0700
committer GitHub <noreply@github.com> Thu Oct 25 09:29:37 2018 -0700
tree 76cf44f39d62f9726d8ae8c1be0ee9310f235776
parent 549e8e07c61dc566e300125b09fb9a27939dddde

Fix a type error in Slider (#23483)

Fixes https://github.com/flutter/flutter/issues/23340

packages/flutter/lib/src/material/slider.dart

diff --git a/packages/flutter/lib/src/material/slider.dart b/packages/flutter/lib/src/material/slider.dart
index 36ac5df..d519bf7 100644
--- a/packages/flutter/lib/src/material/slider.dart
+++ b/packages/flutter/lib/src/material/slider.dart
@@ -622,7 +622,7 @@
       final double distance = (_value - _state.positionController.value).abs();
       _state.positionController.duration = distance != 0.0
         ? _positionAnimationDuration * (1.0 / distance)
-        : 0.0;
+        : Duration.zero;
       _state.positionController.animateTo(convertedValue, curve: Curves.easeInOut);
     } else {
       _state.positionController.value = convertedValue;