Darren Cook <darren@dcook.org> writes:
The hardest part is checking for equality. My proposal is to follow a hash-based approach, which is effective both in terms of complexity and space (one word per tracked object.), ... Admittedly, hash-based checking is not 100% safe, ...
I think this is unacceptable. If I have two objects A and B, and they do happen to hash to the same value, then B won't get saved.
Only if they have the same address, in which case you've done something wrong anyway and you want an assertion.
However good the hash code is does not matter: this would stop me using the serialization library in anything mission critical.
I think one of us is misunderstanding the proposal. -- Dave Abrahams Boost Consulting www.boost-consulting.com