Remove redundant static fields to reduce memory usage

lindexi · lindexi · commit f2203d9f637a · 2021-01-20T09:37:46.000+08:00
diff --git a/src/Microsoft.DotNet.Wpf/src/System.Xaml/System/Xaml/Schema/XamlTypeInvoker.cs b/src/Microsoft.DotNet.Wpf/src/System.Xaml/System/Xaml/Schema/XamlTypeInvoker.cs
@@ -15,7 +15,6 @@ namespace System.Xaml.Schema
     public class XamlTypeInvoker
     {
         private static XamlTypeInvoker s_Unknown;
-        private static object[] s_emptyObjectArray = Array.Empty<object>();
 
         private Dictionary<XamlType, MethodInfo> _addMethods;
         internal MethodInfo EnumeratorMethod { get; set; }
@@ -226,7 +225,7 @@ public virtual IEnumerator GetItems(object instance)
                 throw new NotSupportedException(SR.Get(SRID.OnlySupportedOnCollectionsAndDictionaries));
             }
             MethodInfo getEnumMethod = GetEnumeratorMethod();
-            return (IEnumerator)SafeReflectionInvoker.InvokeMethod(getEnumMethod, instance, s_emptyObjectArray);
+            return (IEnumerator)SafeReflectionInvoker.InvokeMethod(getEnumMethod, instance, Array.Empty<object>());
         }
 
         // vvvvv---- Unused members.  Servicing policy is to retain these anyway.  -----vvvvv

Original file line number	Diff line number	Diff line change
`@@ -15,7 +15,6 @@ namespace System.Xaml.Schema`
`15`	`15`	`public class XamlTypeInvoker`
`16`	`16`	`{`
`17`	`17`	`private static XamlTypeInvoker s_Unknown;`
`18`		`- private static object[] s_emptyObjectArray = Array.Empty<object>();`
`19`	`18`
`20`	`19`	`private Dictionary<XamlType, MethodInfo> _addMethods;`
`21`	`20`	`internal MethodInfo EnumeratorMethod { get; set; }`
`@@ -226,7 +225,7 @@ public virtual IEnumerator GetItems(object instance)`
`226`	`225`	`throw new NotSupportedException(SR.Get(SRID.OnlySupportedOnCollectionsAndDictionaries));`
`227`	`226`	`}`
`228`	`227`	`MethodInfo getEnumMethod = GetEnumeratorMethod();`
`229`		`- return (IEnumerator)SafeReflectionInvoker.InvokeMethod(getEnumMethod, instance, s_emptyObjectArray);`
	`228`	`+ return (IEnumerator)SafeReflectionInvoker.InvokeMethod(getEnumMethod, instance, Array.Empty<object>());`
`230`	`229`	`}`
`231`	`230`
`232`	`231`	`// vvvvv---- Unused members. Servicing policy is to retain these anyway. -----vvvvv`