2Kazuhiko Kakehi 1, Robert Gluck 2, Yoshihiko Futamura 3 1 JSPS Research Fellow Graduate School of Science and Engineering, Waseda University,Tokyo 169 8555, Japan,2 PRESTO, JST & Institute for Software Production Technology, Waseda Universi.Abstraction from Constructors and Functional Constructors and Their Applications[J].Wuhan University Journal of Natural Sciences,2001,6(Z1):368-374.