--- a/assertSize.m	Tue Jun 26 13:57:15 2018 +0200
+++ b/assertSize.m	Tue Jun 26 14:02:31 2018 +0200
@@ -1,16 +1,5 @@
 % Assert that array A has the size s.
 function assertSize(A,s)
-    errmsg = sprintf('Expected %s to have size %s, got: %s',inputname(1), format_vector(s), format_vector(size(A)));
+    errmsg = sprintf('Expected %s to have size %s, got: %s',inputname(1), toString(s), toString(size(A)));
     assert(all(size(A) == s),errmsg);
 end
-
-function str = format_vector(a)
-    l = length(a);
-    str = sprintf('[%d',a(1));
-
-    for i = 2:l
-        str = [str sprintf(', %d',a(i))];
-    end
-
-    str = [str ']'];
-end