-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Peter Dimov wrote: | Dave Harris wrote: | |> |> But suppose I have pair< pair<int,int>, pair<int,int> > ? Shouldn't |> that yield the same hash value as int[4] ? | | | I don't expect a pair< pair<int, int>, pair<int, int> > to be frequently | refactored into an int[4]. So no, I don't think that it should | necessarily have the same hash value as an int[4]. Similarly, I don't | think that vector< vector<int> > should necessarily have the same hash | value as its flattened vector<int> counterpart. Just to comment on this specifically, you really, really should have a vector<vector<int> > hash to the same value as it's flatterned conterpart. I have previously written a program where i had a set of vector<vector<int> >s, where when flatterned they were all the same, and I don't think it's that uncommon.. Chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (MingW32) iD8DBQFDAMeJ3FpDzErifpIRAqrVAJ4jZP0gG5DEttSIccejCW3RzuTdywCfRC5I xaPcjBfTeA6+3sBxKMKPAk8= =Lrj9 -----END PGP SIGNATURE-----