Hi Henrik, > What is select ( http://software-lab.de/doc/refS.html#select/3 ) using > internally for the filter part? > > Seems to me the filter part is a kind of implicit and.
Right. As I wrote in the previous mails, all clauses in a Prolog rule (not only in 'select/3') are combined by an implict AND. Cheers, - Alex -- UNSUBSCRIBE: mailto:email@example.com?subject=Unsubscribe