From 9d5e46cd53d028ecaba5786d770e813610d1a05b Mon Sep 17 00:00:00 2001
From: Mateusz Pusz <mateusz.pusz@gmail.com>
Date: Tue, 28 May 2019 14:33:57 +0200
Subject: [PATCH] Custom type_traits header added

---
 src/include/units/bits/type_traits.h | 48 ++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 src/include/units/bits/type_traits.h

diff --git a/src/include/units/bits/type_traits.h b/src/include/units/bits/type_traits.h
new file mode 100644
index 00000000..4a9c8a50
--- /dev/null
+++ b/src/include/units/bits/type_traits.h
@@ -0,0 +1,48 @@
+// The MIT License (MIT)
+//
+// Copyright (c) 2018 Mateusz Pusz
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+#pragma once
+
+#include <type_traits>
+
+namespace units {
+
+  namespace detail {
+
+    template<bool>
+    struct conditional_impl {
+      template<typename T, typename F>
+      using type = F;
+    };
+
+    template<>
+    struct conditional_impl<true> {
+      template<typename T, typename F>
+      using type = T;
+    };
+
+  }
+
+  template<bool B, typename T, typename F>
+  using conditional = detail::conditional_impl<B>::template type<T, F>;
+
+}