Objected Oriented program examples for High Energy Physics reconstruction

Abstract

A number of Object Oriented example programs based on High Energy Physics event reconstruction are worked out. 1 Introduction This report presents a set of Object-Oriented (OO) programs that should help the reader to design OO programs for High Energy Physics reconstruction. The writing of these examples seems appropriate at a moment that a large group of people is leaving the FORTRAN language and embrace the OO concepts [Boo94]. Talking with people shows that the step from FORTRAN to C++ [Str97] is easily made. Positive comments on C++ usually concern the pointer handling in C++. Most people that start with OO design are looking for a guide for choosing the appropriate classes. The creation of a class specification that later hides many implementation details is not easily understood. It is difficult to give reasons why one design is better than another (motivation of the design). Apart from the performance and functional aspects of the software product other aspects can be importa..