diff --git a/.vscode/solution-explorer/class.cs-template b/.vscode/solution-explorer/class.cs-template
new file mode 100644
index 0000000..20c7109
--- /dev/null
+++ b/.vscode/solution-explorer/class.cs-template
@@ -0,0 +1,5 @@
+namespace {{namespace}};
+
+public class {{name}}
+{
+}
diff --git a/.vscode/solution-explorer/class.ts-template b/.vscode/solution-explorer/class.ts-template
new file mode 100644
index 0000000..ff2edef
--- /dev/null
+++ b/.vscode/solution-explorer/class.ts-template
@@ -0,0 +1,3 @@
+export class {{name}} {
+
+}
\ No newline at end of file
diff --git a/.vscode/solution-explorer/class.vb-template b/.vscode/solution-explorer/class.vb-template
new file mode 100644
index 0000000..38ef67f
--- /dev/null
+++ b/.vscode/solution-explorer/class.vb-template
@@ -0,0 +1,9 @@
+Imports System
+
+Namespace {{namespace}}
+
+    Public Class {{name}}
+    
+    End Class
+
+End Namespace
diff --git a/.vscode/solution-explorer/default.ts-template b/.vscode/solution-explorer/default.ts-template
new file mode 100644
index 0000000..04af870
--- /dev/null
+++ b/.vscode/solution-explorer/default.ts-template
@@ -0,0 +1,3 @@
+export default {{name}} {
+
+}
\ No newline at end of file
diff --git a/.vscode/solution-explorer/enum.cs-template b/.vscode/solution-explorer/enum.cs-template
new file mode 100644
index 0000000..1ded8c0
--- /dev/null
+++ b/.vscode/solution-explorer/enum.cs-template
@@ -0,0 +1,5 @@
+namespace {{namespace}};
+
+public enum {{name}}
+{
+}
diff --git a/.vscode/solution-explorer/interface.cs-template b/.vscode/solution-explorer/interface.cs-template
new file mode 100644
index 0000000..bf25cbb
--- /dev/null
+++ b/.vscode/solution-explorer/interface.cs-template
@@ -0,0 +1,5 @@
+namespace {{namespace}};
+
+public interface {{name}}
+{
+}
diff --git a/.vscode/solution-explorer/interface.ts-template b/.vscode/solution-explorer/interface.ts-template
new file mode 100644
index 0000000..3ea404b
--- /dev/null
+++ b/.vscode/solution-explorer/interface.ts-template
@@ -0,0 +1,3 @@
+export interface {{name}} {
+
+}
\ No newline at end of file
diff --git a/.vscode/solution-explorer/template-list.json b/.vscode/solution-explorer/template-list.json
new file mode 100644
index 0000000..2849622
--- /dev/null
+++ b/.vscode/solution-explorer/template-list.json
@@ -0,0 +1,46 @@
+{
+    "templates": [
+        {
+            "name": "Class",
+            "extension": "cs",
+            "file": "./class.cs-template",
+            "parameters": "./template-parameters.js"
+        },
+        {
+            "name": "Interface",
+            "extension": "cs",
+            "file": "./interface.cs-template",
+            "parameters": "./template-parameters.js"
+        },
+        {
+            "name": "Enum",
+            "extension": "cs",
+            "file": "./enum.cs-template",
+            "parameters": "./template-parameters.js"
+        },
+        {
+            "name": "Class",
+            "extension": "ts",
+            "file": "./class.ts-template",
+            "parameters": "./template-parameters.js"
+        },
+        {
+            "name": "Interface",
+            "extension": "ts",
+            "file": "./interface.ts-template",
+            "parameters": "./template-parameters.js"
+        },
+        {
+            "name": "Default",
+            "extension": "ts",
+            "file": "./default.ts-template",
+            "parameters": "./template-parameters.js"
+        },
+        {
+            "name": "Class",
+            "extension": "vb",
+            "file": "./class.vb-template",
+            "parameters": "./template-parameters.js"
+        }
+    ]
+}
\ No newline at end of file
diff --git a/.vscode/solution-explorer/template-parameters.js b/.vscode/solution-explorer/template-parameters.js
new file mode 100644
index 0000000..daba8b2
--- /dev/null
+++ b/.vscode/solution-explorer/template-parameters.js
@@ -0,0 +1,17 @@
+var path = require("path");
+
+module.exports = function(filename, projectPath, folderPath) {
+    var namespace = "Unknown";
+    if (projectPath) {
+        namespace = path.basename(projectPath, path.extname(projectPath));
+        if (folderPath) {
+            namespace += "." + folderPath.replace(path.dirname(projectPath), "").substring(1).replace(/[\\\/]/g, ".");
+        }
+        namespace = namespace.replace(/[\\\-]/g, "_");
+    }       
+
+    return {
+        namespace: namespace,
+        name: path.basename(filename, path.extname(filename))
+    }
+};
\ No newline at end of file
diff --git a/Sanchime.Functional/Core/Extensions/Option.cs b/Sanchime.Functional/Core/Extensions/Option.cs
index fdaddfc..009a16d 100644
--- a/Sanchime.Functional/Core/Extensions/Option.cs
+++ b/Sanchime.Functional/Core/Extensions/Option.cs
@@ -49,14 +49,6 @@ public static class OptionExtension
 
     #region 应用函子
 
-    /// <summary>
-    /// 幺
-    /// </summary>
-    /// <param name="option"></param>
-    /// <typeparam name="T"></typeparam>
-    /// <returns></returns>
-    public static Option<T> Identity<T>(this Option<T> option) => option;
-
     public static Option<R> Apply<T, R>(this Option<T> option, Func<Option<T>, R> apply, Option<T> value)
         => option.Match(
              None: () => Option.None,
diff --git a/Sanchime.Test/Program.cs b/Sanchime.Test/Program.cs
index e77be9a..5f28270 100644
--- a/Sanchime.Test/Program.cs
+++ b/Sanchime.Test/Program.cs
@@ -1,2 +1 @@
-// See https://aka.ms/new-console-template for more information
-Console.WriteLine("Hello, World of csharp!");
+
\ No newline at end of file