X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fcore%2Fmaputils.h;h=66b4e3baf82c50d815f5bcf4ce0615729ebbf0fb;hb=7be37ad97a2fd3494cb5d56badb45997353ff709;hp=0f863b46fdf7dea307f251be4823a4e63cdcbc4e;hpb=676f6faa92d23c2096a6a85cac819925dbdc1a88;p=libs%2Fcore.git

diff --git a/source/core/maputils.h b/source/core/maputils.h
index 0f863b4..66b4e3b 100644
--- a/source/core/maputils.h
+++ b/source/core/maputils.h
@@ -74,8 +74,14 @@ const typename T::mapped_type &get_item(const T &map, const typename T::key_type
 	return i->second;
 }
 
+template<typename D, typename T>
+D *get_item(const T &map, const typename T::key_type &key)
+{
+	return dynamic_cast<D *>(get_item(map, key));
+}
+
 template<typename T>
-const typename T::iterator insert_unique(T &map, const typename T::key_type &key, const typename T::mapped_type &item)
+typename T::iterator insert_unique(T &map, const typename T::key_type &key, const typename T::mapped_type &item)
 {
 	if(map.count(key))
 		throw key_error(key);
@@ -83,6 +89,15 @@ const typename T::iterator insert_unique(T &map, const typename T::key_type &key
 	return map.insert(typename T::value_type(key, item)).first;
 }
 
+template<typename T>
+void remove_existing(T &map, const typename T::key_type &key)
+{
+	if(!map.count(key))
+		throw key_error(key);
+
+	map.erase(key);
+}
+
 } // namespace Msp
 
 #endif