Index: lib/core/duration.dart |
diff --git a/lib/core/duration.dart b/lib/core/duration.dart |
index f6a32fab8c27cba4a985e22659bd2d0a2636a201..aa3d4bec38dde6fd4baf78d33c65de29753e87ec 100644 |
--- a/lib/core/duration.dart |
+++ b/lib/core/duration.dart |
@@ -7,7 +7,7 @@ |
/** |
* A [Duration] represents a time span. A duration can be negative. |
*/ |
-class Duration implements Comparable, Hashable { |
+class Duration implements Comparable { |
static const int MILLISECONDS_PER_SECOND = 1000; |
static const int SECONDS_PER_MINUTE = 60; |
static const int MINUTES_PER_HOUR = 60; |