From 7f80c0e2d311c7ff2453bdd558e4e7fd91cea872 Mon Sep 17 00:00:00 2001
From: gnaggnoyil <gnaggnoyil@gmail.com>
Date: Wed, 10 Jul 2019 04:02:48 +0800
Subject: Make  handle features (#6797)

---
 toolsrc/include/vcpkg/base/util.h | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'toolsrc/include')

diff --git a/toolsrc/include/vcpkg/base/util.h b/toolsrc/include/vcpkg/base/util.h
index 213adb67c..e629ef0b2 100644
--- a/toolsrc/include/vcpkg/base/util.h
+++ b/toolsrc/include/vcpkg/base/util.h
@@ -6,9 +6,18 @@
 #include <unordered_map>
 #include <utility>
 #include <vector>
+#include <type_traits>
 
 namespace vcpkg::Util
 {
+    template <class T>
+    constexpr std::add_const_t<T>& as_const(T& t) noexcept
+    {
+        return t;
+    }
+    template <class T>
+    void as_const(const T&&) = delete;
+
     template<class Container>
     using ElementT =
         std::remove_reference_t<decltype(*std::declval<typename std::remove_reference_t<Container>::iterator>())>;
-- 
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