Ulrich Scholz wrote: > Hi everybody. > > I have two suggestions about references: > > > 1) Currently, one can create a named reference with > > local reference(+Name). > > that holds a reference to a term in the same way as a logical variable. I > would appreciate a local reference that can be used by handle. > > ... > > By now, I use a hash table with a single entry. You can use a wrapper structure and setarg/3, e.g. make_ref(ref(Init), Init). update_ref(Ref, Value) :- setarg(1, Ref, Value). get_ref(ref(Value), Value). ?- make_ref(R, hello), get_ref(R, Old), update_ref(R, there), get_ref(R, New). R = ref(there) Old = hello New = there Yes (0.00s cpu) > > > 2) Maybe you should separate the description of named references from the > description bags and stores in the user manual because the name of their > "group" refers to non-logical predicates explicitly. Yes, good idea. -- Joachim Schimpf / phone: +44 20 7594 8187 IC-Parc / mailto:J.Schimpf@imperial.ac.uk Imperial College London / http://www.icparc.ic.ac.uk/eclipseReceived on Wed Mar 16 17:02:43 2005
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