Hi,

Not what you asked for, but perhaps worthy a second look: using arrays instead of objects.
Scatter is slightly faster to arrays, acopy() works as an easy clone() and iterating over the whole "record" to compare is faster. Arrays are not as selfdescribing, but they have a certain charm for the specific uses you asked for <g>. Mapping from row to fieldname is even easier than the code to walk across objects.

my 0.02 EUR

thomas