From a7d5856385f126e874db6010d9dbfd37290c61de Mon Sep 17 00:00:00 2001
From: Yatao Li <yatli@microsoft.com>
Date: Mon, 6 Aug 2018 18:53:13 +0800
Subject: fix #390

---
 Ix/CPP/src/cpplinq/linq.hpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/Ix/CPP/src/cpplinq/linq.hpp b/Ix/CPP/src/cpplinq/linq.hpp
index be77151..6552f79 100644
--- a/Ix/CPP/src/cpplinq/linq.hpp
+++ b/Ix/CPP/src/cpplinq/linq.hpp
@@ -471,22 +471,22 @@ public:
 
     // TODO: skip_while(pred)
 
-    template<typename ITEM = typename element_type>
+    template<typename ITEM = element_type>
     typename std::enable_if<std::is_default_constructible<ITEM>::value, ITEM>::type sum() const {
         ITEM seed{};
         return sum(seed);
     }
 
-    typename element_type sum(typename element_type seed) const {
+    element_type sum(element_type seed) const {
         return std::accumulate(begin(), end(), seed);
     }
 
-    template <typename Selector, typename Result = std::result_of<Selector(typename element_type)>::type>
+    template <typename Selector, typename Result = typename std::result_of<Selector(element_type)>::type>
     typename std::enable_if<std::is_default_constructible<Result>::value, Result>::type sum(Selector sel) const {
         return from(begin(), end()).select(sel).sum();			
     }
 
-    template <typename Selector, typename Result = std::result_of<Selector(typename element_type)>::type>
+    template <typename Selector, typename Result = typename std::result_of<Selector(element_type)>::type>
     Result sum(Selector sel, Result seed) const {
         return from(begin(), end()).select(sel).sum(seed);			
     }
-- 
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