From 711eb99b06b7c50ef07d4802a6a3199589ddabc1 Mon Sep 17 00:00:00 2001
From: Jason Simmons <jason-simmons@users.noreply.github.com>
Date: Thu, 25 Oct 2018 09:29:37 -0700
Subject: [PATCH] Fix a type error in Slider (#23483)

Fixes https://github.com/flutter/flutter/issues/23340
---
 packages/flutter/lib/src/material/slider.dart | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/flutter/lib/src/material/slider.dart b/packages/flutter/lib/src/material/slider.dart
index 36ac5df116..d519bf79b4 100644
--- a/packages/flutter/lib/src/material/slider.dart
+++ b/packages/flutter/lib/src/material/slider.dart
@@ -622,7 +622,7 @@ class _RenderSlider extends RenderBox {
       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;