From: Eric Niebler <eniebler@fb.com>
Date: Mon, 3 Jul 2017 21:13:27 +0000 (-0700)
Subject: constexpr the Unit comparison ops
X-Git-Tag: v2017.07.10.00~18
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c6f344a95922a7b998de98b7bf2d85e1f9bf0a60;p=folly.git

constexpr the Unit comparison ops

Summary: `constexpr` All The Things!

Reviewed By: Orvid

Differential Revision: D5364910

fbshipit-source-id: 11abeb8adc38aef3ac4f2596ecf0f533b9e74203
---

diff --git a/folly/Unit.h b/folly/Unit.h
index cfc2703b..0f90ff6e 100644
--- a/folly/Unit.h
+++ b/folly/Unit.h
@@ -45,8 +45,12 @@ struct Unit {
   template <typename T>
   struct Drop : std::conditional<std::is_same<T, Unit>::value, void, T> {};
 
-  bool operator==(const Unit& /*other*/) const { return true; }
-  bool operator!=(const Unit& /*other*/) const { return false; }
+  constexpr bool operator==(const Unit& /*other*/) const {
+    return true;
+  }
+  constexpr bool operator!=(const Unit& /*other*/) const {
+    return false;
+  }
 };
 
 constexpr Unit unit {};