Subj : Re: OO compilers and efficiency To : comp.programming From : rhedin Date : Tue Jul 19 2005 10:30 am Hi Brian. You didn't say what OO language you were thinking of, but my favorite treatment of how C++ is typically implemented is Bruce Eckel's. Thinking in C++, Bruce Eckel, 1995. The section is called "How C++ Implements Late Binding." The contents say it starts on p. 545, but in the text it starts on p. 541. As to getters and setters, I believe smart compilers simply do the assignment. If your get routine does something more complicated, it actually gets called. Regards, Rick .