- What does \\+ mean in Prolog? - Stack Overflow
What does \+ mean in Prolog? Asked 16 years, 2 months ago Modified 7 years, 9 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 The == "operator" differs in that it succeeds only if the two terms are already identical without further unification Thus X == 2 is true only if the variable X had previously been assigned the value
- Not equal and not unify in Prolog - Stack Overflow
A \= B is equivalent to not (A = B) So lets compare = 2 and == 2 first; from the swi-prolog manual: ?Term1 = ?Term2 Unify Term1 with Term2 True if the unification succeeds @Term1 == @Term2 True if Term1 is equivalent to Term2 Notice that = 2 tries to unify the terms and if it succeeds it's true while == 2 just performs a check:
- Newest prolog Questions - Stack Overflow
How do I represent and manipulate atoms with capital letters in Prolog, without them being interpreted as variables? I'm developing a program in Prolog that interprets a chessboard notation The input is a forsyth notation as a list containing pieces represented by letters, as in the example: [[t,c,b,r,d,r,b,c,t],8, prolog chess Vitor Alves
- Not equal sign in Visual Prolog? - Stack Overflow
Documentation for the second variant pointed out by Kaarel can be found in this Visual Prolog reference page However the problem with your code goes a little deeper
- 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 \+
- syntax - Prolog or operator, query - Stack Overflow
Prolog "or" operator, query Asked 13 years, 1 month ago Modified 12 years, 8 months ago Viewed 157k times
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