From 1699a424e9d4476603b59a81ae8d530e927db5dc Mon Sep 17 00:00:00 2001
From: BobLiu <liubaozheng@126.com>
Date: Thu, 5 Sep 2024 15:07:41 +0800
Subject: [PATCH] version 0.1

1 support c++2a.
---
 ThreadPool.h | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/ThreadPool.h b/ThreadPool.h
index 4183203..50764ac 100644
--- a/ThreadPool.h
+++ b/ThreadPool.h
@@ -10,13 +10,14 @@
 #include <future>
 #include <functional>
 #include <stdexcept>
+#include <type_traits>
 
 class ThreadPool {
 public:
     ThreadPool(size_t);
     template<class F, class... Args>
     auto enqueue(F&& f, Args&&... args) 
-        -> std::future<typename std::result_of<F(Args...)>::type>;
+        -> std::future<typename std::invoke_result<F,Args...>::type>;
     ~ThreadPool();
 private:
     // need to keep track of threads so we can join them
@@ -61,9 +62,9 @@ inline ThreadPool::ThreadPool(size_t threads)
 // add new work item to the pool
 template<class F, class... Args>
 auto ThreadPool::enqueue(F&& f, Args&&... args) 
-    -> std::future<typename std::result_of<F(Args...)>::type>
+    -> std::future<typename std::invoke_result<F,Args...>::type>
 {
-    using return_type = typename std::result_of<F(Args...)>::type;
+    using return_type = typename std::invoke_result<F,Args...>::type;
 
     auto task = std::make_shared< std::packaged_task<return_type()> >(
             std::bind(std::forward<F>(f), std::forward<Args>(args)...)