Move emptyList to the top

VL1.tex

@@ -366,12 +366,12 @@ list1 = [1, 2]
 \pause
 or by using the \emph{cons} operator \code{(:)} which takes an element and a list and produces a new list with the element prepended to the front.
 \begin{lstlisting}
+emptyList = []
+
 list2 = 1 : []
 
 -- is this really a list?
 list3 = [1, 2] == 1 : 2 : []
-
-emptyList = []
 \end{lstlisting}
 \pause
 How about something more interesting: