Add presentation; start a different implementation

1 files changed, 0 insertions, 22 deletions

diff --git a/impl/Sum.h b/impl/Sum.h
deleted file mode 100644
index bf04669..0000000
--- a/impl/Sum.h
+++ /dev/null
@@ -1,22 +0,0 @@
-#ifndef SUM_H
-#define SUM_H
-
-#include "Expression.h"
-
-template<class T>
-struct Sum : public Expression<T> {
-  Sum(Expression<T>* left, Expression<T>* right)
-    : _left(left), _right(right) { }
-
-  T eval(const std::map<std::string, T>& mappings) const {
-    T left = _left->eval(mappings);
-    T right = _right->eval(mappings);
-    return left + right;
-  }
-  
-  private:
-  Expression<T>* _left;
-  Expression<T>* _right;
-};
-
-#endif