From cd4bcce70f68800eb43a836bc3e73c19af335c9e Mon Sep 17 00:00:00 2001
From: Michele Caini <michele.caini@gmail.com>
Date: Fri, 27 Dec 2019 01:43:05 +0100
Subject: [PATCH] view: faster contains

---
 src/entt/entity/view.hpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/entt/entity/view.hpp b/src/entt/entity/view.hpp
index db92a13fc..4e5654ab6 100644
--- a/src/entt/entity/view.hpp
+++ b/src/entt/entity/view.hpp
@@ -359,7 +359,8 @@ public:
      * @return True if the view contains the given entity, false otherwise.
      */
     bool contains(const entity_type entt) const {
-        return find(entt) != end();
+        return (std::get<pool_type<Component> *>(pools)->has(entt) && ...)
+                && (!std::get<pool_type<Exclude> *>(pools)->has(entt) && ...);
     }
 
     /**
@@ -688,7 +689,7 @@ public:
      * @return True if the view contains the given entity, false otherwise.
      */
     bool contains(const entity_type entt) const {
-        return find(entt) != end();
+        return pool->has(entt);
     }
 
     /**