On 7/14/07 7:14 PM, Kannan Goundan wrote: > - A (0,5) > - B (1,1) > - C (2,4) > - D (3,3) > - E (4,4) > - F (5,5) > - G (6,7) > - H (7,7) > > A given instance is of type "C" if its "code" field is between 2 and 4, > inclusive.
Interesting, thanks. In this case, we probably should rename subcode as it really is a set of flags, which in some cases happen to be code from the 'tree' data structures. The hierarchy is actually flat. We use code ranges in a way similar to your proposal to group related codes. For instance, all the codes that take operands have consecutive numbers. Admittedly, this is fairly primitive but so is the language we have to deal with.
