We’ve got rich-text editing, code-blocks, images, categories and tags. Only had one day on it, but it can handle editors and moderators. It’s to be an aid to community and publicity. My intention is to create a place where folks can easily share how-to’s, news, and other information. Here A is 'any value' in both cat(A) and dog(A), but both must have the same value.I had some unexpected free time today, so I set about building a multi-user blog platform. This will give all animals which are both a cat and a dog (in the database, there is no such animal). In contrast, the sequence of goal is as follow: This will give us all possible combinations of a cat and a dog. The use of variables in the query is shown by the following example. They will define in the same order as they loaded into the database. In the above goal, Prolog will list all four clauses which define the predicate dog. Prolog recognizes that there is no more available solution by not pausing, but the system prompt ?- by immediately going on to the output.Ī new built-in predicate is introduced in this example. Prolog produces a further solution as follows: The semicolon ( ) key is again pressed by the user. Now Prolog will find for an alternative value of B that satisfies the goal dog(B). This time semicolon ( ) key is pressed by the user. The above query means that 'find the B's value, and it will be the name of a dog'. It will cause the Prolog pause, and because of this, we have to wait for the user to press the 'return' key before it outputs the system prompt ?. Other possible answers of A are as follows, poodle, bulldog, dobermann. It means that find the A's value, and it will be the name of the dog. In this example, various new features of Prolog are introduced. It will list all the clauses which define predicate dog # 0.01 seconds to consult loaded using the consultĪ = rottweiler pauses- return key is pressed by the userī = dobermann No pause ? It will go onto next line Assume that in a text file '', the program has been saved, and output is generated by loading the program and at the system prompt, we are entering a sequence of goals as follows: Predicate dog and predicate cat both have four clauses. It is always terminated using the full stop.*/ * This Prolog program consists of various clauses.
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