first commit

java/expression/generic/GenericExpr.java

@@ -0,0 +1,10 @@
+package expression.generic;
+
+import java.util.List;
+
+/**
+ * @author Doschennikov Nikita (me@fymio.us)
+ */
+public interface GenericExpr<T> {
+    T evaluate(ArithmeticType<T> type, List<T> vars);
+}