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Prolog Euclidian Square


Prolog Euclidian Square

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Prolog Euclidian Square
Tag : prolog , By : Robby
Date : November 28 2020, 04:01 AM

seems to work fine There are three problems here:
your version for two empty lists should unify the second parameter with 0, not ED, since then it remains a free variable, so:
euclidsqr([], [], 0).
euclidsqr([X|Xs], [Y|Ys], ED) :-
    euclidsqr(Xs, Ys, ED1),
    ED is ED1 + (X-Y)*(X-Y).
euclidsqr([], [], 0).
euclidsqr([X|Xs], [Y|Ys], ED) :-
    euclidsqr(Xs, Ys, ED1),
    ED is ED1 + (X-Y)*(X-Y).

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Prolog Question - Square number


Tag : prolog , By : Navin
Date : March 29 2020, 07:55 AM
I hope this helps you . When I fixed a typo in your code (you're calling patrat, but don't define it), it seems to work correctly (see http://ideone.com/j7fSA and http://ideone.com/SjIws).
Maybe you have copied the code incorrectly, or you have patrat defined somewhere else, which works differently.

How to write a square bracket in prolog?


Tag : prolog , By : Erwin
Date : March 29 2020, 07:55 AM
I hope this helps . Can you not treat your square brackets as atoms (i.e., '[' and ']'), along with everything else?
How about, for example:
label1(T) --> id(X), label2(Y), {T =.. [X, Y]}.
label2(Y) --> ['['], innerexp(Y), [']'].
id(X) --> [X].
innerexp(Y) --> [Y].
?- phrase(label1(T), [foo, '[', bar, ']'], Rem).
T = foo(bar),
Rem = [].

Prolog: square numbers in a list


Tag : list , By : Andrew
Date : March 29 2020, 07:55 AM
it should still fix some issue We're defining a predicate which describes the relationship between one list, A, and another list, B: B should have all the same elements as A, except that any number in A should be squared in B.
Where you've gone wrong:
squared_members([], []).
squared_members([L|Ls], [SqrdL|SqrdLs]) :-
    number(L),
    SqrdL is L * L,
    squared_members(Ls, SqrdLs).
squared_members([L|Ls], [L|SqrdLs]) :-
    \+number(L),
    squared_members(Ls, SqrdLs).
squared_members([], []).
squared_members([L|Ls], [M|Ms]) :-
  ( number(L)
  ->  M is L * L, squared_members(Ls, Ms)  
  ;   M = L, squared_members(Ls, Ms)
  ).

Integer square root works in SWI-Prolog and YAP, but but not in GNU-Prolog


Tag : prolog , By : Scott Everts
Date : March 29 2020, 07:55 AM
Any of those help There have been some reports, including in the GNU Prolog mailing list, of similar errors under Linux, notably Ubuntu/kubuntu:
http://lists.gnu.org/archive/html/bug-prolog/2018-09/msg00002.html

Prolog Extended Euclidian Algorithm


Tag : prolog , By : cautionsign
Date : March 29 2020, 07:55 AM
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