infer voor statements

[cc1516.git] / deliverables / p2 / p2.tex

diff --git a/deliverables/p2/p2.tex b/deliverables/p2/p2.tex
index 9f5fc65..b7d7639 100644 (file)
--- a/deliverables/p2/p2.tex
+++ b/deliverables/p2/p2.tex
@@ -3,7 +3,7 @@
 \frame{\titlepage}
 
 \begin{frame}[fragile]
-       \frametitle{\textsc{SPLS}}
+       \frametitle{\textsc{SPLT}}
        \begin{block}{Features}
                \begin{itemize}
                        \item Implementation language:
@@ -124,7 +124,7 @@ flop(n, l) :: Int -> [Int] -> Bool {
                \end{CleanCode}
                \pause
                \item It is also correctly determined that \CI{Bool} and the return 
-               type of \CI{flop(n,l)} don't match.
+               type of \CI{flip(n,l)} don't match.
        \end{itemize}
 \end{frame}
 
@@ -146,7 +146,6 @@ flop(n, l) {
        \end{itemize}
 \end{frame}
 
-
 \begin{frame}[fragile]
        \frametitle{Mutual Recursion}
        \begin{itemize}
@@ -191,8 +190,49 @@ var y = id(True);
 \end{frame}
 
 \begin{frame}[fragile]
-       \frametitle{But wait, there is more!}
-       \framesubtitle{Trouble that is}
+       \frametitle{It is not all trouble}
+       \begin{block}{A lot of functionality works correctly}
+               \begin{itemize}
+                       \item Typing of \CI{VarDecls}
+                       \pause
+                       \item Typing of type chains:
+                       \begin{CleanCode}
+id_poly_wtf(x) :: a -> a
+{
+  var a = x;
+  var b = a;
+  var c = b;
+  return c;
+}
+                       \end{CleanCode}
+               \end{itemize}
+       \end{block}
+\end{frame}
+
+\begin{frame}[fragile]
+       \frametitle{It is not all trouble}
+       \begin{block}{A lot of functionality works correctly}
+       \begin{itemize}
+               \item Typing of \CI{VarDecls}
+               \item Typing of type chains:
+               \begin{CleanCode}
+id_poly_wtf(x) :: a -> a
+{
+  a a = x;
+  a b = a;
+  a c = b;
+  return c;
+}
+               \end{CleanCode}
+               \pause
+               \item Typing \CI{var l = 1:2:[];} succeeds \\  
+                         while. \CI{var l = []; var x = True:l; var y = 1:l;} fails
+       \end{itemize}
+       \end{block}
+\end{frame}
+
+\begin{frame}[fragile]
+       \frametitle{Why is there so much trouble?}
                \begin{block}{Our type inference algorithm is too greedy}
                        It globally types a function once it is applied to a value, even
                        if this types it more specified then needed. 
@@ -243,16 +283,19 @@ var y = id(True);
                We will implement the Hindley-Miller algorithm exactly instead of 
                \emph{``kinda''}
        \end{block}
+       \pause
        \begin{block}{Split constraint generation and solving}
                Hide all the nasty details of constraint generation using a 
                Reader-Writer-State-Transformer-Monad
+               \pause
                \begin{description}
                        \item[Reader] Reader environment to read fresh type variable
                        \item[Writer] Write constraints to \CI{Constraint} environment
                        \item[State] Gamma
                        \item[Transformer] (Either SemError) 
                \end{description}
-               \emph{Sadly these monads are not in the Clean library.}\\  
+               \emph{\small Sadly these monads are not in the Clean library.}\\  
+               \pause
                Then solve with a Relatively simple Solver-Monad
                \begin{CleanCode}
 :: Solve a = StateT Unifier (Either TypeError) a