Improve currying slides

VL2.tex

@@ -319,6 +319,16 @@ uncurry :: (a -> b -> c) -> (a, b) -> c
 \end{haskellcode}
 \end{frame}
 
+\begin{frame}[fragile]
+\frametitle{4. Currying (ctn.)}
+So... now that we know what currying is, let's summarize:
+\begin{itemize}[<+->]
+\item all functions in haskell have only one argument (strictly speaking)
+\item if a function seems to have multiple arguments... currying is used behind the scenes to evaluate it
+\item currying also allows us to do partial function application (which is important for function composition)
+\end{itemize}
+\end{frame}
+
 \section{5. Function composition}
 
 \begin{frame}[fragile]