From daaf89a1a154e32a5394580224cdc7761e428ee9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20Vondru=C5=A1?= <mosra@centrum.cz>
Date: Thu, 19 Jul 2012 23:34:30 +0200
Subject: [PATCH] Added (explicit) operator bool to Set.

So things like if(!(set & Enum::Value)) are possible.
---
 src/Set.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/Set.h b/src/Set.h
index 5a9c04c67..c693c8a33 100644
--- a/src/Set.h
+++ b/src/Set.h
@@ -81,6 +81,11 @@ template<class T, class U> class Set {
             return Set<T, U>(~value);
         }
 
+        /** @brief Value as boolean */
+        inline constexpr explicit operator bool() const {
+            return value == 0;
+        }
+
         /** @brief Value in underlying type */
         inline constexpr explicit operator UnderlyingType() const {
             return value;