diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 2a22440..7501362 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -1,9 +1,27 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="BranchesTreeState">
+    <expand>
+      <path>
+        <item name="ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="LOCAL_ROOT" type="e8cecc67:BranchNodeDescriptor" />
+      </path>
+      <path>
+        <item name="ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="REMOTE_ROOT" type="e8cecc67:BranchNodeDescriptor" />
+      </path>
+      <path>
+        <item name="ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="REMOTE_ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="GROUP_NODE:origin" type="e8cecc67:BranchNodeDescriptor" />
+      </path>
+    </expand>
+    <select />
+  </component>
   <component name="CMakeRunConfigurationManager" shouldGenerate="true" shouldDeleteObsolete="true">
     <generated>
-      <config projectName="generallib" targetName="generallib" />
       <config projectName="generallib" targetName="General" />
+      <config projectName="generallib" targetName="generallib" />
     </generated>
   </component>
   <component name="CMakeSettings" AUTO_RELOAD="true">
@@ -13,15 +31,9 @@
   </component>
   <component name="ChangeListManager">
     <list default="true" id="0facce0d-c642-4d80-b2fb-daf5f3e68dff" name="Default Changelist" comment="">
-      <change beforePath="$PROJECT_DIR$/.idea/misc.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/misc.xml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/general/src/pattern/factory.hpp" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/cmake-build-debug/CMakeFiles/Makefile2" beforeDir="false" afterPath="$PROJECT_DIR$/cmake-build-debug/CMakeFiles/Makefile2" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/cmake-build-debug/CMakeFiles/progress.marks" beforeDir="false" afterPath="$PROJECT_DIR$/cmake-build-debug/CMakeFiles/progress.marks" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/cmake-build-debug/Makefile" beforeDir="false" afterPath="$PROJECT_DIR$/cmake-build-debug/Makefile" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/cmake-build-debug/cmake_install.cmake" beforeDir="false" afterPath="$PROJECT_DIR$/cmake-build-debug/cmake_install.cmake" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/general/src/algorithm/ringbuffer.hpp" beforeDir="false" afterPath="$PROJECT_DIR$/general/src/algorithm/ringbuffer.hpp" afterDir="false" />
     </list>
-    <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
     <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
@@ -74,25 +86,13 @@
       <recent name="D:\project\c++\generallib\src\encrypt" />
     </key>
   </component>
-  <component name="RunDashboard">
-    <option name="ruleStates">
-      <list>
-        <RuleState>
-          <option name="name" value="ConfigurationTypeDashboardGroupingRule" />
-        </RuleState>
-        <RuleState>
-          <option name="name" value="StatusDashboardGroupingRule" />
-        </RuleState>
-      </list>
-    </option>
-  </component>
   <component name="RunManager" selected="CMake Application.General">
-    <configuration name="General" type="CMakeRunConfiguration" factoryName="Application" PASS_PARENT_ENVS_2="true" PROJECT_NAME="generallib" TARGET_NAME="General" CONFIG_NAME="Debug">
+    <configuration name="General" type="CMakeRunConfiguration" factoryName="Application" REDIRECT_INPUT="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="generallib" TARGET_NAME="General" CONFIG_NAME="Debug">
       <method v="2">
         <option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
       </method>
     </configuration>
-    <configuration name="generallib" type="CMakeRunConfiguration" factoryName="Application" PASS_PARENT_ENVS_2="true" PROJECT_NAME="generallib" TARGET_NAME="generallib" CONFIG_NAME="Debug">
+    <configuration name="generallib" type="CMakeRunConfiguration" factoryName="Application" REDIRECT_INPUT="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="generallib" TARGET_NAME="generallib" CONFIG_NAME="Debug">
       <method v="2">
         <option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
       </method>
@@ -174,15 +174,18 @@
       <map>
         <entry key="MAIN">
           <value>
-            <State>
-              <option name="COLUMN_ORDER" />
-            </State>
+            <State />
           </value>
         </entry>
       </map>
     </option>
+    <option name="oldMeFiltersMigrated" value="true" />
   </component>
   <component name="WindowStateProjectService">
+    <state x="361" y="110" key="#New_File_Extensions" timestamp="1589793685936">
+      <screen x="0" y="40" width="1536" height="824" />
+    </state>
+    <state x="361" y="110" key="#New_File_Extensions/0.40.1536.824@0.40.1536.824" timestamp="1589793685936" />
     <state x="651" y="314" width="409" height="388" key="#Notifications" timestamp="1588741195489">
       <screen x="0" y="40" width="1536" height="824" />
     </state>
diff --git a/general/src/pattern/factory.hpp b/general/src/pattern/factory.hpp
new file mode 100644
index 0000000..cb588ad
--- /dev/null
+++ b/general/src/pattern/factory.hpp
@@ -0,0 +1,15 @@
+//
+// Created by 29019 on 2020/5/18.
+//
+
+#ifndef GENERAL_FACTORY_HPP
+#define GENERAL_FACTORY_HPP
+
+template<typename T>
+class Factory{
+public:
+    virtual T* GetProduct(){
+        return nullptr;
+    }
+};
+#endif //GENERAL_FACTORY_HPP