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- What does \\+ mean in Prolog? - Stack Overflow
What does \+ mean in Prolog? Asked 16 years, 4 months ago Modified 7 years, 11 months ago Viewed 62k times
- math - Prolog =:= operator - Stack Overflow
There are some special operators in Prolog, one of them is is, however, recently I came across the =:= operator and have no idea how it works Can someone explain what this operator does, and also
- What is the difference between == and = in Prolog?
The = "operator" in Prolog is actually a predicate (with infix notation) = 2 that succeeds when the two terms are unified Thus X = 2 or 2 = X amount to the same thing, a goal to unify X with 2
- What is the logical not in Prolog? - Stack Overflow
In Prolog, the "not" is an example of "negation as failure", but it is felt that \+ will make it clearer to the programmer just what precisely is being asserted in any given rule So you CAN use "not" (most PL implementations keep it for backwards-compatibility) but to be an idiomatic modern PL programmer, you probably should prefer to use \+
- logic - Prolog arrow operator - Stack Overflow
8 The arrow in Prolog does not correspond to material implication in first-order logic It's a ternary "if-then-else" operator with an optional alternative Because of the way it's implemented in Prolog syntax,
- if in prolog? - Stack Overflow
Is there a way to do an if in prolog, e g if a variable is 0, then to do some actions (write text to the terminal) An else isn't even needed, but I can't find any documentation of if
- org. xml. sax. SAXParseException: Content is not allowed in prolog
28 Try adding a space between the encoding="UTF-8" string in the prolog and the terminating ?> In XML the prolog designates this bracket-question mark delimited element at the start of the document (while the tag prolog in stackoverflow refers to the programming language) Added: Is that dash in front of your prolog part of the document?
- What is the difference between the keyword is and = in prolog?
I'd appreciate it if someone could elaborate on the difference between the is keyword and the = operator in prolog I saw this discussion in == and =, but it excludes is The documentation talks ab
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