Add Matrix exampel

This commit is contained in:
Andreas Stadelmeier 2024-06-27 16:54:16 +02:00
parent eb2ae1eb34
commit e0a531a3a7

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@ -77,6 +77,48 @@ Java has adopted more and more type inference features over time.
Currently Java only has local type inference.
We want to bring type inference for Java to the next level.
Our type inference algorithm for Java should be able to retrieve missing type annotations
in a Java program.
The main difference from existing type inference algorithms for Java is that we also allow method types to be omitted in the input program.
\begin{figure}
\begin{lstlisting}
public class Matrix extends Vector<Vector<Integer>> {
public Matrix(vv) {
Integer i;
i = 0;
while(i < vv.size()) {
this.add(vv.elementAt(i));
i=i+1;
}
}
public mul(m) {
var ret = new Matrix();
var i = 0;
while(i < size()) {
var v1 = this.elementAt(i);
var v2 = new Vector<Integer>();
var j = 0;
while(j < v1.size()) {
var erg = 0;
var k = 0;
while(k < v1.size()) {
erg = erg + v1.get(k)
* m.get(k).get(j);
k++; }
v2.addElement(erg);
j++; }
ret.addElement(v2);
i++;
}
return ret;
}
}
\end{lstlisting}
\end{figure}
\section{Subtyping}
\begin{mathpar}
\inferrule[Refl]{}{