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Predicate elif/1 |
:- else. :-if(Goal).
... :- endif.
In a sequence as below, the section below the first matching elif
is processed. If no test succeeds, the else branch is processed.
:- if(test1). section_1. :- elif(test2). section_2. :- elif(test3). section_3. :- else. section_else. :- endif.