From what I remember playing with SPSS (I no longer have a system to use) I remember two things: String values cannot be empty, every alpha value contains the number of bytes corresponding to its width. However a string variable which contains only whitespace is treated as if it were empty.
This raises the question: Should we special case the value_hash function, such that it returns the same hash for blank values regardless of their width? Likewise, value comparisions should perhaps treat fully blank values as identical. Introducing these kind of special cases seems rather kludgy to me. But is perhaps necessary for compatibility reasons. What do people think? -- PGP Public key ID: 1024D/2DE827B3 fingerprint = 8797 A26D 0854 2EAB 0285 A290 8A67 719C 2DE8 27B3 See http://pgp.mit.edu or any PGP keyserver for public key.
signature.asc
Description: Digital signature
_______________________________________________ pspp-dev mailing list [email protected] http://lists.gnu.org/mailman/listinfo/pspp-dev
