Update EntityManager and Archetype

Ghost.Core/Handle.cs

@@ -106,6 +106,29 @@ public readonly struct Identifier<T>
     {
         return !a.Equals(b);
     }
+
+    public static bool operator <(Identifier<T> a, Identifier<T> b)
+    {
+        return a.value < b.value;
+    }
+
+    public static bool operator >(Identifier<T> a, Identifier<T> b)
+    {
+        return a.value > b.value;
+    }
+
+    public static bool operator <=(Identifier<T> a, Identifier<T> b)
+    {
+        return a.value <= b.value;
+    }
+
+    public static bool operator >=(Identifier<T> a, Identifier<T> b)
+    {
+        return a.value >= b.value;
+    }
+
+    public static implicit operator int(Identifier<T> id) => id.value;
+    public static implicit operator Identifier<T>(int value) => new Identifier<T>(value);
 }
 
 public readonly struct Key<T>

Ghost.Core/Result.cs

@@ -152,6 +152,14 @@ public readonly ref struct RefResult<T, S>
 
 public static class ResultExtensions
 {
+    public static void ThrowIfFailed(this ResultStatus result)
+    {
+        if (result != ResultStatus.Success)
+        {
+            throw new InvalidOperationException($"Operation failed: {result}");
+        }
+    }
+
     public static void ThrowIfFailed(this Result result)
     {
         if (!result.IsSuccess)
@@ -170,11 +178,6 @@ public static class ResultExtensions
         return result.Value;
     }
 
-    public static T? GetValueOrDefault<T>(this Result<T> result, T? defaultValue = default)
-    {
-        return result.IsSuccess ? result.Value : defaultValue;
-    }
-
     public static T GetValueOrThrow<T, S>(this Result<T, S> result, S expect)
         where S : Enum
     {
@@ -186,12 +189,29 @@ public static class ResultExtensions
         return result.Value;
     }
 
+    public static T? GetValueOrDefault<T>(this Result<T> result, T? defaultValue = default)
+    {
+        return result.IsSuccess ? result.Value : defaultValue;
+    }
+
     public static T? GetValueOrDefault<T, S>(this Result<T, S> result, S expect, T? defaultValue = default)
         where S : Enum
     {
         return (result.Status?.Equals(expect) ?? false) ? defaultValue : result.Value;
     }
 
+    public static bool TryGetValue<T>(this Result<T> result, out T value)
+    {
+        if (result.IsSuccess)
+        {
+            value = result.Value;
+            return true;
+        }
+
+        value = default!;
+        return false;
+    }
+
     public static Result OnSuccess(this Result result, Action action)
     {
         if (result.IsSuccess)