From d60493a961dc44185702e5d101476fdd915f4752 Mon Sep 17 00:00:00 2001
From: Huo Yaoyuan <huoyaoyuan@hotmail.com>
Date: Tue, 12 Nov 2019 20:03:21 +0800
Subject: [PATCH] Use discards.

---
 osu.Game.Tests/Beatmaps/Formats/ParsingTest.cs   | 2 +-
 osu.Game/Configuration/DatabasedConfigManager.cs | 2 +-
 osu.Game/Screens/Select/BeatmapCarousel.cs       | 2 +-
 osu.sln.DotSettings                              | 1 +
 4 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/osu.Game.Tests/Beatmaps/Formats/ParsingTest.cs b/osu.Game.Tests/Beatmaps/Formats/ParsingTest.cs
index b3863bcf44..669acc3202 100644
--- a/osu.Game.Tests/Beatmaps/Formats/ParsingTest.cs
+++ b/osu.Game.Tests/Beatmaps/Formats/ParsingTest.cs
@@ -59,7 +59,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
         {
             try
             {
-                var _ = int.Parse(input);
+                _ = int.Parse(input);
             }
             catch (Exception e)
             {
diff --git a/osu.Game/Configuration/DatabasedConfigManager.cs b/osu.Game/Configuration/DatabasedConfigManager.cs
index 02382cfd2b..1ef4c2527a 100644
--- a/osu.Game/Configuration/DatabasedConfigManager.cs
+++ b/osu.Game/Configuration/DatabasedConfigManager.cs
@@ -36,7 +36,7 @@ namespace osu.Game.Configuration
         protected override void PerformLoad()
         {
             databasedSettings = settings.Query(ruleset?.ID, variant);
-            legacySettingsExist = databasedSettings.Any(s => int.TryParse(s.Key, out var _));
+            legacySettingsExist = databasedSettings.Any(s => int.TryParse(s.Key, out _));
         }
 
         protected override bool PerformSave()
diff --git a/osu.Game/Screens/Select/BeatmapCarousel.cs b/osu.Game/Screens/Select/BeatmapCarousel.cs
index c3436ffd45..b58753bdbb 100644
--- a/osu.Game/Screens/Select/BeatmapCarousel.cs
+++ b/osu.Game/Screens/Select/BeatmapCarousel.cs
@@ -79,7 +79,7 @@ namespace osu.Game.Screens.Select
             newRoot.Filter(activeCriteria);
 
             // preload drawables as the ctor overhead is quite high currently.
-            var _ = newRoot.Drawables;
+            _ = newRoot.Drawables;
 
             root = newRoot;
             if (selectedBeatmapSet != null && !beatmapSets.Contains(selectedBeatmapSet.BeatmapSet))
diff --git a/osu.sln.DotSettings b/osu.sln.DotSettings
index b08d314dbe..9b400de390 100644
--- a/osu.sln.DotSettings
+++ b/osu.sln.DotSettings
@@ -17,6 +17,7 @@
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=ArrangeTypeMemberModifiers/@EntryIndexedValue">WARNING</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=ArrangeTypeModifiers/@EntryIndexedValue">WARNING</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=AssignedValueIsNeverUsed/@EntryIndexedValue">HINT</s:String>
+	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=AssignmentIsFullyDiscarded/@EntryIndexedValue">DO_NOT_SHOW</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=AssignNullToNotNullAttribute/@EntryIndexedValue">HINT</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=AutoPropertyCanBeMadeGetOnly_002EGlobal/@EntryIndexedValue">HINT</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=AutoPropertyCanBeMadeGetOnly_002ELocal/@EntryIndexedValue">HINT</s:String>