From 8152173c39b5242a1703d0c605c5da274c2eb9db Mon Sep 17 00:00:00 2001
From: q66 <daniel@octaforge.org>
Date: Thu, 14 Jan 2016 19:11:52 +0000
Subject: [PATCH] convert more traits

---
 ostd/functional.hh | 12 +++----
 ostd/range.hh      | 80 ++++++++++++++++++++++------------------------
 2 files changed, 43 insertions(+), 49 deletions(-)

diff --git a/ostd/functional.hh b/ostd/functional.hh
index 567d43d..1ad6485 100644
--- a/ostd/functional.hh
+++ b/ostd/functional.hh
@@ -510,11 +510,9 @@ namespace detail {
     };
 
     template<typename T>
-    struct FunctorInPlace {
-        static constexpr bool value = sizeof(T)  <= sizeof(FunctorData)
-          && (alignof(FunctorData) % alignof(T)) == 0
-          && IsMoveConstructible<T>;
-    };
+    constexpr bool FunctorInPlace = sizeof(T) <= sizeof(FunctorData) &&
+                                    (alignof(FunctorData) % alignof(T)) == 0 &&
+                                    IsMoveConstructible<T>;
 
     struct FunctionManager;
 
@@ -572,9 +570,7 @@ namespace detail {
     };
 
     template<typename T, typename A>
-    struct FunctorDataManager<T, A,
-        EnableIf<!FunctorInPlace<T>::value>
-    > {
+    struct FunctorDataManager<T, A, EnableIf<!FunctorInPlace<T>>> {
         template<typename R, typename ...Args>
         static R call(const FunctorData &s, Args ...args) {
             return (*(AllocatorPointer<A> &)s)(forward<Args>(args)...);
diff --git a/ostd/range.hh b/ostd/range.hh
index 5598150..36a578d 100644
--- a/ostd/range.hh
+++ b/ostd/range.hh
@@ -72,102 +72,102 @@ namespace detail {
 
 namespace detail {
     template<typename T, bool = IsConvertible<RangeCategory<T>, InputRangeTag>>
-    struct IsInputRangeCore: False {};
+    constexpr bool IsInputRangeCore = false;
 
     template<typename T>
-    struct IsInputRangeCore<T, true>: True {};
+    constexpr bool IsInputRangeCore<T, true> = true;
 
     template<typename T, bool = detail::IsRangeTest<T>::value>
-    struct IsInputRangeBase: False {};
+    constexpr bool IsInputRangeBase = false;
 
     template<typename T>
-    struct IsInputRangeBase<T, true>: detail::IsInputRangeCore<T>::Type {};
+    constexpr bool IsInputRangeBase<T, true> = detail::IsInputRangeCore<T>;
 }
 
 template<typename T>
-constexpr bool IsInputRange = detail::IsInputRangeBase<T>::value;
+constexpr bool IsInputRange = detail::IsInputRangeBase<T>;
 
 // is forward range
 
 namespace detail {
     template<typename T, bool = IsConvertible<RangeCategory<T>, ForwardRangeTag>>
-    struct IsForwardRangeCore: False {};
+    constexpr bool IsForwardRangeCore = false;
 
     template<typename T>
-    struct IsForwardRangeCore<T, true>: True {};
+    constexpr bool IsForwardRangeCore<T, true> = true;
 
     template<typename T, bool = detail::IsRangeTest<T>::value>
-    struct IsForwardRangeBase: False {};
+    constexpr bool IsForwardRangeBase = false;
 
     template<typename T>
-    struct IsForwardRangeBase<T, true>: detail::IsForwardRangeCore<T>::Type {};
+    constexpr bool IsForwardRangeBase<T, true> = detail::IsForwardRangeCore<T>;
 }
 
 template<typename T>
-constexpr bool IsForwardRange = detail::IsForwardRangeBase<T>::value;
+constexpr bool IsForwardRange = detail::IsForwardRangeBase<T>;
 
 // is bidirectional range
 
 namespace detail {
     template<typename T, bool = IsConvertible<
         RangeCategory<T>, BidirectionalRangeTag
-    >> struct IsBidirectionalRangeCore: False {};
+    >> constexpr bool IsBidirectionalRangeCore = false;
 
     template<typename T>
-    struct IsBidirectionalRangeCore<T, true>: True {};
+    constexpr bool IsBidirectionalRangeCore<T, true> = true;
 
     template<typename T, bool = detail::IsRangeTest<T>::value>
-    struct IsBidirectionalRangeBase: False {};
+    constexpr bool IsBidirectionalRangeBase = false;
 
     template<typename T>
-    struct IsBidirectionalRangeBase<T, true>:
-        detail::IsBidirectionalRangeCore<T>::Type {};
+    constexpr bool IsBidirectionalRangeBase<T, true> =
+        detail::IsBidirectionalRangeCore<T>;
 }
 
 template<typename T> constexpr bool IsBidirectionalRange
-    = detail::IsBidirectionalRangeBase<T>::value;
+    = detail::IsBidirectionalRangeBase<T>;
 
 // is random access range
 
 namespace detail {
     template<typename T, bool = IsConvertible<
         RangeCategory<T>, RandomAccessRangeTag
-    >> struct IsRandomAccessRangeCore: False {};
+    >> constexpr bool IsRandomAccessRangeCore = false;
 
     template<typename T>
-    struct IsRandomAccessRangeCore<T, true>: True {};
+    constexpr bool IsRandomAccessRangeCore<T, true> = true;
 
     template<typename T, bool = detail::IsRangeTest<T>::value>
-    struct IsRandomAccessRangeBase: False {};
+    constexpr bool IsRandomAccessRangeBase = false;
 
     template<typename T>
-    struct IsRandomAccessRangeBase<T, true>:
-        detail::IsRandomAccessRangeCore<T>::Type {};
+    constexpr bool IsRandomAccessRangeBase<T, true> =
+        detail::IsRandomAccessRangeCore<T>;
 }
 
 template<typename T> constexpr bool IsRandomAccessRange
-    = detail::IsRandomAccessRangeBase<T>::value;
+    = detail::IsRandomAccessRangeBase<T>;
 
 // is finite random access range
 
 namespace detail {
     template<typename T, bool = IsConvertible<
         RangeCategory<T>, FiniteRandomAccessRangeTag
-    >> struct IsFiniteRandomAccessRangeCore: False {};
+    >> constexpr bool IsFiniteRandomAccessRangeCore = false;
 
     template<typename T>
-    struct IsFiniteRandomAccessRangeCore<T, true>: True {};
+    constexpr bool IsFiniteRandomAccessRangeCore<T, true> = true;
 
     template<typename T, bool = detail::IsRangeTest<T>::value>
-    struct IsFiniteRandomAccessRangeBase: False {};
+    constexpr bool IsFiniteRandomAccessRangeBase = false;
 
     template<typename T>
-    struct IsFiniteRandomAccessRangeBase<T, true>:
-        detail::IsFiniteRandomAccessRangeCore<T>::Type {};
+    constexpr bool IsFiniteRandomAccessRangeBase<T, true> =
+        detail::IsFiniteRandomAccessRangeCore<T>;
 }
 
 template<typename T> constexpr bool IsFiniteRandomAccessRange
-    = detail::IsFiniteRandomAccessRangeBase<T>::value;
+    = detail::IsFiniteRandomAccessRangeBase<T>;
 
 // is infinite random access range
 
@@ -179,21 +179,21 @@ template<typename T> constexpr bool IsInfiniteRandomAccessRange
 namespace detail {
     template<typename T, bool = IsConvertible<
         RangeCategory<T>, ContiguousRangeTag
-    >> struct IsContiguousRangeCore: False {};
+    >> constexpr bool IsContiguousRangeCore = false;
 
     template<typename T>
-    struct IsContiguousRangeCore<T, true>: True {};
+    constexpr bool IsContiguousRangeCore<T, true> = true;
 
     template<typename T, bool = detail::IsRangeTest<T>::value>
-    struct IsContiguousRangeBase: False {};
+    constexpr bool IsContiguousRangeBase = false;
 
     template<typename T>
-    struct IsContiguousRangeBase<T, true>:
-        detail::IsContiguousRangeCore<T>::Type {};
+    constexpr bool IsContiguousRangeBase<T, true> =
+        detail::IsContiguousRangeCore<T>;
 }
 
 template<typename T> constexpr bool IsContiguousRange
-    = detail::IsContiguousRangeBase<T>::value;
+    = detail::IsContiguousRangeBase<T>;
 
 // is output range
 
@@ -212,21 +212,19 @@ namespace detail {
         (detail::OutputRangeTest<T, const RangeValue<T>  &>::value ||
          detail::OutputRangeTest<T,       RangeValue<T> &&>::value ||
          detail::OutputRangeTest<T,       RangeValue<T>   >::value)
-    ))> struct IsOutputRangeCore: False {};
+    ))> constexpr bool IsOutputRangeCore = false;
 
     template<typename T>
-    struct IsOutputRangeCore<T, true>: True {};
+    constexpr bool IsOutputRangeCore<T, true> = true;
 
     template<typename T, bool = detail::IsRangeTest<T>::value>
-    struct IsOutputRangeBase: False {};
+    constexpr bool IsOutputRangeBase = false;
 
     template<typename T>
-    struct IsOutputRangeBase<T, true>:
-        detail::IsOutputRangeCore<T>::Type {};
+    constexpr bool IsOutputRangeBase<T, true> = detail::IsOutputRangeCore<T>;
 }
 
-template<typename T> constexpr bool IsOutputRange
-    = detail::IsOutputRangeBase<T>::value;
+template<typename T> constexpr bool IsOutputRange = detail::IsOutputRangeBase<T>;
 
 namespace detail {
     // range iterator