consequences.tex

\begin{frame}
\begin{block}{Consequences}
A commitment to Functional Programming has many immediate consequences.
\end{block}
\end{frame}

\begin{frame}[fragile]
\begin{block}{For example, no more mutable data structures}
\begin{lstlisting}[style=java]
class Person {
  `var` name: String
  `var` address: Address
}
\end{lstlisting}
\end{block}
\end{frame}

\begin{frame}[fragile]
\begin{block}{No more loops}
\begin{lstlisting}[style=java]
for(int i = 0; i < list.length; `i++`)
\end{lstlisting}
\end{block}
\end{frame}

\begin{frame}[fragile]
\begin{block}{No reading \& writing files arbitrarily}
\begin{lstlisting}[style=java]
contents1 = readFile("filename");
writeFile("filename", "the contents");
contents2 = readFile("filename");
\end{lstlisting}
\end{block}

\end{frame}
\begin{frame}
\begin{block}{So then, if all our familiar tools are taken away \ldots}
\emph{how do we then achieve these practical outcomes?}
\end{block}
\end{frame}

\begin{frame}
\begin{block}{?}
\begin{itemize}
\item how do we design our data structures?
\item how do we write loops?
\item how do we read \& write files?
\end{itemize}
\end{block}
\end{frame}