Hi Tom Tom Brinkman ha escrito:
Comments: Again, congratulations on this library. I see it, combined with the serialization library , as having the potential to eliminate the need for relational databases in c++ applications.
Well, IMHO this is a too far-fetched. RDBMS are sophisticated products with tons of capabilities that indexed_set is not even close to being able to emulate. OTOH, if your program needs to store a personal contacts book, then probably indexed_set would suffice. If you're into relational stuff, take a look at Arkadiy's RTL. I'm hopeful this library can provide an excellent replacement for "real" databases when dealing with moderate ammounts of data. Plus, he'll probably use indexed_set as the storage core :)
Questions: 1) When you add a record to an indexed_set, and it violates the index definition in some way, could you throw an exception, instead of simply replacing the original record?
If the insertion violates some constraint, then it does not take place. insert operations return a pair<iterator,bool>: the bool indicates whether insertion succeeded or not.
2) Is there support for mult-key unique indicies. I read in the documenation that you can have more than one unique indice in the definition, but they are unique individually. Question: Can you combine two or more of those unique indice to create a multi-key unique indice.
Take a look at lex_compare in example 7 for a method to combine two keys into a "composite" unique constraint. Most probably I'll lift this construct (along with compose_key in example 6) to the library itself. Regards, Joaquín M López Muñoz Telefónica, Investigación y Desarrollo