.editorconfig

@@ -1,41 +0,0 @@
-# top-most EditorConfig file
-root = true
-
-[*]
-charset = utf-8
-end_of_line = lf
-indent_style = space
-indent_size = 2
-insert_final_newline = true
-trim_trailing_whitespace = true
-
-# Visual Studio Spell checker configs (https://learn.microsoft.com/en-us/visualstudio/ide/text-spell-checker?view=vs-2022#how-to-customize-the-spell-checker)
-spelling_exclusion_path  = ./exclusion.dic
-
-[*.cs]
-indent_size = 4
-charset = utf-8-bom
-end_of_line = unset
-
-# Solution files
-[*.{sln,slnx}]
-end_of_line = unset
-
-# MSBuild project files
-[*.{csproj,props,targets}]
-end_of_line = unset
-
-# Xml config files
-[*.{ruleset,config,nuspec,resx,runsettings,DotSettings}]
-end_of_line = unset
-
-[*{_AssemblyInfo.cs,.notsupported.cs}]
-generated_code = true
-
-# C# code style settings
-[*.{cs}]
-dotnet_diagnostic.IDE0044.severity = none # IDE0044: Make field readonly
-
-# https://stackoverflow.com/questions/79195382/how-to-disable-fading-unused-methods-in-visual-studio-2022-17-12-0
-dotnet_diagnostic.IDE0051.severity = none # IDE0051: Remove unused private member
-dotnet_diagnostic.IDE0130.severity = none # IDE0130: Namespace does not match folder structure

.github/dependabot.yaml

@@ -5,8 +5,3 @@ updates:
     directory: "/"
     schedule:
       interval: "weekly" # Check for updates to GitHub Actions every week
-    ignore:
-      # I just want update action when major/minor version is updated. patch updates are too noisy.
-      - dependency-name: '*'
-        update-types:
-          - version-update:semver-patch

.github/workflows/build-debug.yml

@@ -10,12 +10,10 @@ on:
 
 jobs:
   build-dotnet:
-    permissions:
+    runs-on: ubuntu-latest
-      contents: read
-    runs-on: ubuntu-24.04
     timeout-minutes: 10
     steps:
-      - uses: Cysharp/Actions/.github/actions/checkout@main
+      - uses: actions/checkout@v4
       - uses: Cysharp/Actions/.github/actions/setup-dotnet@main
       - run: dotnet build -c Debug
       - run: dotnet test -c Debug --no-build

.github/workflows/build-release.yml

@@ -14,12 +14,10 @@ on:
 
 jobs:
   build-dotnet:
-    permissions:
+    runs-on: ubuntu-latest
-      contents: read
-    runs-on: ubuntu-24.04
     timeout-minutes: 10
     steps:
-      - uses: Cysharp/Actions/.github/actions/checkout@main
+      - uses: actions/checkout@v4
       - uses: Cysharp/Actions/.github/actions/setup-dotnet@main
       # build and pack
       - run: dotnet build -c Release -p:Version=${{ inputs.tag }}
@@ -35,8 +33,6 @@ jobs:
   # release
   create-release:
     needs: [build-dotnet]
-    permissions:
-      contents: write
     uses: Cysharp/Actions/.github/workflows/create-release.yaml@main
     with:
       commit-id: ${{ github.sha }}

.github/workflows/prevent-github-change.yml

@@ -7,6 +7,4 @@ on:
 
 jobs:
   detect:
-    permissions:
-      contents: read
     uses: Cysharp/Actions/.github/workflows/prevent-github-change.yaml@main

.github/workflows/stale.yml

@@ -7,8 +7,4 @@ on:
 
 jobs:
   stale:
-    permissions:
-      contents: read
-      pull-requests: write
-      issues: write
     uses: Cysharp/Actions/.github/workflows/stale-issue.yaml@main

README.md

@@ -56,6 +56,7 @@ Observable<CollectionRemoveEvent<T>> IObservableCollection<T>.ObserveRemove()
 Observable<CollectionReplaceEvent<T>> IObservableCollection<T>.ObserveReplace() 
 Observable<CollectionMoveEvent<T>> IObservableCollection<T>.ObserveMove() 
 Observable<CollectionResetEvent<T>> IObservableCollection<T>.ObserveReset()
+Observable<CollectionResetEvent<T>> IObservableCollection<T>.ObserveReset()
 Observable<Unit> IObservableCollection<T>.ObserveClear<T>()
 Observable<(int Index, int Count)> IObservableCollection<T>.ObserveReverse<T>()
 Observable<(int Index, int Count, IComparer<T>? Comparer)> IObservableCollection<T>.ObserveSort<T>()
@@ -486,7 +487,7 @@ ObservableCollections provides these collections.
 
 ```csharp
 class ObservableList<T> : IList<T>, IReadOnlyList<T>, IObservableCollection<T>, IReadOnlyObservableList<T>
-class ObservableDictionary<TKey, TValue> : IDictionary<TKey, TValue>, IReadOnlyDictionary<TKey, TValue>, IObservableCollection<KeyValuePair<TKey, TValue>>, IReadOnlyObservableDictionary<TKey, TValue> where TKey : notnull
+class ObservableDictionary<TKey, TValue> : IDictionary<TKey, TValue>, IReadOnlyDictionary<TKey, TValue>, IObservableCollection<KeyValuePair<TKey, TValue>> where TKey : notnull
 class ObservableHashSet<T> : IReadOnlySet<T>, IReadOnlyCollection<T>, IObservableCollection<T> where T : notnull
 class ObservableQueue<T> : IReadOnlyCollection<T>, IObservableCollection<T>
 class ObservableStack<T> : IReadOnlyCollection<T>, IObservableCollection<T>
@@ -683,7 +684,7 @@ public interface ISynchronizedViewList<out TView> : IReadOnlyList<TView>, IDispo
 }
 
 // Obsolete for public use
-public interface INotifyCollectionChangedSynchronizedViewList<TView> : IList<TView>, IList, ISynchronizedViewList<TView>, INotifyCollectionChanged, INotifyPropertyChanged
+public interface INotifyCollectionChangedSynchronizedViewList<out TView> : ISynchronizedViewList<TView>, INotifyCollectionChanged, INotifyPropertyChanged
 {
 }
 

src/ObservableCollections.R3/ObservableCollectionR3Extensions.cs

@@ -167,12 +167,10 @@ sealed class ObservableCollectionChanged<T>(IObservableCollection<T> collection,
                             eventArgs.Action,
                             item,
                             eventArgs.OldItem,
-                            newStartingIndex: i,
+                            i++,
                             eventArgs.OldStartingIndex,
                             eventArgs.SortOperation);
 
-                        if (eventArgs.NewStartingIndex != -1) i++;
-
                         observer.OnNext(newArgs);
                     }
                 }

src/ObservableCollections/ObservableStack.cs

@@ -166,7 +166,7 @@ namespace ObservableCollections
             }
         }
 
-        public bool TryPeek([MaybeNullWhen(false)] out T result)
+        public bool TryPeek([MaybeNullWhen(false)] T result)
         {
             lock (SyncRoot)
             {
@@ -212,4 +212,4 @@ namespace ObservableCollections
             return GetEnumerator();
         }
     }
-}
+}