From: Mikko Rasa <tdb@tdb.fi>
Date: Wed, 26 Sep 2012 16:04:33 +0000 (+0300)
Subject: Make Collection::contains check for type
X-Git-Url: http://git.tdb.fi/?p=libs%2Fdatafile.git;a=commitdiff_plain;h=e249d648f6393fbb4b74e76c2a7b9eee9f1187f1

Make Collection::contains check for type

Checking item existence without type information is not particularly
useful, since there's no guarantee that the object can be used for its
intended purpose.
---

diff --git a/source/collection.cpp b/source/collection.cpp
index e60b200..d40ab19 100644
--- a/source/collection.cpp
+++ b/source/collection.cpp
@@ -9,11 +9,6 @@ Collection::~Collection()
 		delete *i;
 }
 
-bool Collection::contains(const std::string &n) const
-{
-	return items.count(n);
-}
-
 
 Collection::Loader::Loader(Collection &c):
 	coll(c)
diff --git a/source/collection.h b/source/collection.h
index 5dd2fe6..d5e0806 100644
--- a/source/collection.h
+++ b/source/collection.h
@@ -151,9 +151,16 @@ public:
 		return result;
 	}
 
-	/** Checks whether a name exists in the collection.  Does not care about the
-	type of the object. */
-	bool contains(const std::string &n) const;
+	/// Checks whether a typed object exists in the collection.
+	template<typename T>
+	bool contains(const std::string &name) const
+	{
+		ItemMap::const_iterator i = items.find(name);
+		if(i==items.end())
+			return false;
+
+		return i->second.check_type<typename RemoveConst<T>::Type>();
+	}
 
 	/// Returns the name of an item in the collection.
 	template<typename T>