Christopher Lane Hinson wrote:
Where "InsidenessMap a b c" represents a relationship where b's are inside a's, and b's have a state of c. Then, you need to declare a separate InsidenessMap for each possible relationship, but this ensures that you'll never put a galaxy inside a solar system. Or you can make 'a' be a reference to any type of object; there are options.
Ketil Malde wrote:
Identity can be emulated by relatively straightforward means: store all planets in a Map indexed by something that is useful as an identifier (i.e. stays constant and is unique), and have a Galaxy keep a list of identifiers.
So basically you guys are saying I should rethink the data structure into a relational model instead of sticking to the OO model... I think i could do this pretty easily. a table would be a map of id to instance ...then another map for foreign keys, or maybe just as a member of each data Is the relational model a better fit than the object model for functional programming ? Sacha