#include "Nil.h" #include "defs.h" Nil *one_nil_to_rule_them_all; @implementation Nil + (void) initialize { one_nil_to_rule_them_all = [Nil new]; [one_nil_to_rule_them_all retain]; } + (id) nil { return one_nil_to_rule_them_all; } - (string) printForm { return "()"; } @end