Initial commit

MareSynchronosAPI/Data/Comparer/GroupDtoComparer.cs

@@ -0,0 +1,23 @@
+using MareSynchronos.API.Dto.Group;
+
+namespace MareSynchronos.API.Data.Comparer;
+
+
+public class GroupDtoComparer : IEqualityComparer<GroupDto>
+{
+    public static GroupDtoComparer Instance => _instance;
+    private static GroupDtoComparer _instance = new GroupDtoComparer();
+
+    private GroupDtoComparer() { }
+
+    public bool Equals(GroupDto? x, GroupDto? y)
+    {
+        if (x == null || y == null) return false;
+        return x.GID.Equals(y.GID, StringComparison.Ordinal);
+    }
+
+    public int GetHashCode(GroupDto obj)
+    {
+        return obj.Group.GID.GetHashCode();
+    }
+}