public(Name/Arity) public((Name/Arity, ...)) public([Name/Arity, ...]) public(Name//Arity) public((Name//Arity, ...)) public([Name//Arity, ...]) public(op(Precedence,Associativity,Operator)) public((op(Precedence,Associativity,Operator), ...)) public([op(Precedence,Associativity,Operator), ...])
Declares public predicates, public grammar rule non-terminals, and public operators. A public predicate can be called from any object. A public non-terminal can be used as an argument in phrase/2 and phrase/3 calls from any object.
Declaring a public operator does not make it global when the entity holding the scope directive is compiled and loaded. But declaring public operators provides a reusable specification for using them in the entity clients (e.g. in uses/2 directives).
Template and modes
public(+predicate_indicator_term) public(+non_terminal_indicator_term) public(+operator_declaration)
:- public(ancestor/1). :- public((instance/1, instances/1)). :- public([leaf/1, leaves/1]).