From 95dd1c0b55d1ea1ea47b4cb8739c61eaf0ab237a Mon Sep 17 00:00:00 2001
From: Siyuan Zhang <siyuanzhang.zsy@alibaba-inc.com>
Date: Thu, 8 Aug 2024 20:52:07 +0800
Subject: [PATCH] fix inconsistent return type in thread pool class (#167)

---
 grape/utils/thread_pool.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/grape/utils/thread_pool.h b/grape/utils/thread_pool.h
index b5d2d510..66a57655 100644
--- a/grape/utils/thread_pool.h
+++ b/grape/utils/thread_pool.h
@@ -124,8 +124,8 @@ inline void ThreadPool::WaitEnd(std::vector<std::future<void>>& results) {
 // add new task to the pool
 template <class F, class... Args>
 auto ThreadPool::enqueue(F&& f, Args&&... args)
-    -> std::future<typename std::result_of<F(Args...)>::type> {
-  using return_type = typename std::result_of<F(Args...)>::type;
+    -> std::future<grape::result_of_t<F, Args...>> {
+  using return_type = grape::result_of_t<F, Args...>;
 
   auto task = std::make_shared<std::packaged_task<return_type()>>(
       std::bind(std::forward<F>(f), std::forward<Args>(args)...));