Improve performance of size

source/structs/package.d

@@ -369,7 +369,15 @@ public
 	{
 		private
 		{
-			const(Element[]) elements = parse_string(CONFIG);
+			static const(Element[]) elements = parse_string(CONFIG);
+			static const(size_t) elements_size = {
+				size_t size = 0;
+				static foreach (i; elements)
+				{
+					size += i.packSize();
+				}
+				return size;
+			}();
 		}
 
 		public
@@ -380,12 +388,7 @@ public
 			 +/
 			static size_t size()
 			{
-				size_t result  = 0;
-				static foreach (i; elements)
-				{
-					result += i.packSize();
-				}
-				return result;
+				return elements_size;
 			}
 		}
 	}