diff -r 8a4690db252e -r 485cb6d6b98c sources/list.h
--- a/sources/list.h	Fri May 15 22:46:53 2015 +0300
+++ b/sources/list.h	Wed Jul 20 14:48:47 2016 +0300
@@ -263,7 +263,7 @@
 
 		Self result;
 
-		for (int i = a; i <= b; ++i)
+		for (int i = a; i < b; ++i)
 			result << operator[] (i);
 
 		return result;