folly::FunctionScheduler: Adding support for uniform interval distribution

[folly.git] / folly / Traits.h

diff --git a/folly/Traits.h b/folly/Traits.h
index 309157c4dfadcf952faddc8284bf004f07a401ac..0a291024baf55b48421e579dc0633f6559f9b01b 100644 (file)
--- a/folly/Traits.h
+++ b/folly/Traits.h
@@ -309,7 +309,7 @@ struct is_negative_impl {
 
 template <typename T>
 struct is_negative_impl<T, false> {
-  constexpr static bool check(T x) { return false; }
+  constexpr static bool check(T) { return false; }
 };
 
 // folly::to integral specializations can end up generating code
@@ -432,6 +432,16 @@ FOLLY_ASSUME_FBVECTOR_COMPATIBLE_1(std::function);
 // Boost
 FOLLY_ASSUME_FBVECTOR_COMPATIBLE_1(boost::shared_ptr);
 
+#define FOLLY_CREATE_HAS_MEMBER_TYPE_TRAITS(classname, type_name) \
+  template <typename T> \
+  struct classname { \
+    template <typename C> \
+    constexpr static bool test(typename C::type_name*) { return true; } \
+    template <typename> \
+    constexpr static bool test(...) { return false; } \
+    constexpr static bool value = test<T>(nullptr); \
+  }
+
 #define FOLLY_CREATE_HAS_MEMBER_FN_TRAITS_IMPL(classname, func_name, cv_qual) \
   template <typename TTheClass_, typename RTheReturn_, typename... TTheArgs_> \
   class classname<TTheClass_, RTheReturn_(TTheArgs_...) cv_qual> { \