RaiseAnException_explicit ( ProgramPoint, 17 ). RaiseAnExceptio17_explicit ( ProgramPoint ) :. Name/N.-> meaning a function Name with N arguments followed by an ellipsis argument.Ellipsis flow must match an ellipsis argument and can therefore be only the last flow in the flow pattern.) In this case it means that the declared predicate (predicate domain) can have a variable number of arguments. ( Ellipsis "." can be used in predicate and predicate domain declarations as the last formal argument. meaning an ordinary predicate Name with N arguments followed by an Ellipsis argument (i.e. Name/N-> meaning a function Name of arity N.Name/N meaning an ordinary predicate (i.e.In order to distinguish between different arities of predicates in predicates from sections and in resolve qualifications, predicate names can (optionally) be stated with arity. But in, for example, predicatesFromInterface sections and resolve qualifications the arity is not obvious. In most situations the arity of a predicate is obvious from the context in which the predicate is mentioned. Predicates with different arity are always different predicates, even if they have the same name. % length is the one from listExt2 end implement m圜lass ArityĪ predicate that takes N arguments are said to be N-ary, or to have arity N. they can be inherited as the predicates from the origin interface.there will be no support conflict with any predicates from the origin interface.The important thing about the predicates from section is that the mentioned predicates retain their origin interface. If an interface supports a subset of another interface it is neither subtype or super-type related to the other interface. The predicates are stated by name or by name and arity. The predicates from section names the interface and all supported predicates. we are creating a new object.Īn interface can support a subset of another interface by stating the predicates in a predicates from section. The second call on the other hand does return a value, therefore it is a call to the class function version of the constructor. it is an invocation of the base class constructor on " This". The first call to test_class :: new does not return a value, therefore it is a call to the non-function object version of the constructor. % create a new object of the base class and pass it to p(.) Test_class :: new ( 7 ), % invoke the base class constructor on "This" Implement test2_class inherits test_class
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