diff --git a/src/UtilsCtrl/UMemory.h b/src/UtilsCtrl/UMemory.h
index 95c94ef..1c145c1 100644
--- a/src/UtilsCtrl/UMemory.h
+++ b/src/UtilsCtrl/UMemory.h
@@ -1,14 +1,14 @@
 /*
  * @Author: chenjingyu
  * @Date: 2022-10-11 01:43:58
- * @LastEditTime: 2022-10-11 01:59:50
+ * @LastEditTime: 2022-10-11 02:32:15
  * @Description: Memory operator
- * @FilePath: \CThreadPool\src\UtilsCtrl\UMemory.h
+ * @FilePath: /CThreadPool/src/UtilsCtrl/UMemory.h
  */
 #ifndef CGRAPH_UMEMORY_H
 #define CGRAPH_UMEMORY_H
 
-#include <memory.h>
+#include <memory>
 #include <type_traits>
 #include "../CBasic/CBasicInclude.h"
 
@@ -24,8 +24,6 @@ std::unique_ptr<T> WrapUnique(T* ptr) {
   return std::unique_ptr<T>(ptr);
 }
 
-namespace memory_internal {
-
 // Traits to select proper overload and return type for `absl::make_unique<>`.
 template <typename T>
 struct MakeUniqueResult {
@@ -40,32 +38,20 @@ struct MakeUniqueResult<T[N]> {
   using invalid = void;
 };
 
-}  // namespace memory_internal
-
-// gcc 4.8 has __cplusplus at 201301 but the libstdc++ shipped with it doesn't
-// define make_unique.  Other supported compilers either just define __cplusplus
-// as 201103 but have make_unique (msvc), or have make_unique whenever
-// __cplusplus > 201103 (clang).
-#if (__cplusplus > 201103L || defined(_MSC_VER)) && \
-    !(defined(__GLIBCXX__) && !defined(__cpp_lib_make_unique))
-using std::make_unique;
-#else
-
 template <typename T, typename... Args>
-typename memory_internal::MakeUniqueResult<T>::scalar make_unique(
-    Args&&... args) {
+typename MakeUniqueResult<T>::scalar make_unique(
+  Args&&... args) {
   return std::unique_ptr<T>(new T(std::forward<Args>(args)...));
 }
 
 template <typename T>
-typename memory_internal::MakeUniqueResult<T>::array make_unique(size_t n) {
-  return std::unique_ptr<T>(new typename absl::remove_extent_t<T>[n]());
+typename MakeUniqueResult<T>::array make_unique(size_t n) {
+  return std::unique_ptr<T>(new typename std::remove_extent<T>[n]());
 }
 
 template <typename T, typename... Args>
-typename memory_internal::MakeUniqueResult<T>::invalid make_unique(
+typename MakeUniqueResult<T>::invalid make_unique(
     Args&&... /* args */) = delete;
-#endif
 
 CGRAPH_NAMESPACE_END
 
diff --git a/tutorial.cpp b/tutorial.cpp
index e1f9dbd..9ee7f3f 100644
--- a/tutorial.cpp
+++ b/tutorial.cpp
@@ -7,6 +7,7 @@
 ***************************/
 
 #include "src/CThreadPool.h"
+#include "src/UtilsCtrl/UMemory.h"
 
 #include "MyFunction.h"
 
@@ -123,7 +124,7 @@ void tutorial_threadpool_3(UThreadPoolPtr tp) {
 
 
 int main() {
-    auto pool = std::make_unique<UThreadPool>();    // 构造一个线程池类的智能指针
+    auto pool = make_unique<UThreadPool>();    // 构造一个线程池类的智能指针
     CGRAPH_ECHO("======== tutorial_threadpool_1 begin. ========");
     tutorial_threadpool_1(pool.get());