7-Conjunctions(AND , OR) [PROLOG]

[@31425]

Fantastic serie of videos. I needed all of this, to pass my exam. You are a true hero, Sir!

[@gorrejayasai07]

likes(mary,chocolate).
likes(mary,wine).
likes(mary,burger).
likes(john,wine).
likes(john,mary).
likes(john,burger).

[@venkatehyadav]

hi , your videos are excellant... easy to understand. Thank you. please videos on BFS and DFS other algorithms

[@techdose4u]

Thanks but i have stopped making videos on PROLOG.

[@jz2710]

Nicely done Sir.

[@Huda-dq9tm]

Is there a way of asking - What are all the things liked by John and not Mary adn vice-versa?

[@techdose4u]

I did it by adding does_not_like. I could not find a way of solving your query using in-built operators. My solution goes like this :- (It mentions the things that mary does not like)
DATASET:-
likes(mary,chocolate).
likes(mary,wine).
likes(mary,burger).
likes(john,wine).
likes(john,mary).
likes(john,burger).
likes(john,drinks).
likes(john,oranges).
does_not_like(mary,drinks).
does_not_like(mary,oranges).
does_not_like(mary,news).
QUERY:-
likes(john,X),does_not_like(mary,X).
ANSWER:-
X = drinks ;
X = oranges.
NOTE: If you have or find any other better solution then do let me know :)

[@Huda-dq9tm]

@@techdose4u That's great. Thanks.

[@soutrickroychowdhury3468]

@@techdose4u Good bro.

[@quvomiddinkamalov3292]

Thank you

[@ChitralInside]

Sir what if we need the second option in our variable. As when we initialize our variables then it always initialize with the very first possible. And now i want that how can i initialize this variable with the second possibility by ignoring the first one.

[@malik4islam]

What’s the rule for PERSON(A)?

[@charbilysf7592]

Sir i love u

[@dishantisrani2609]

I guess the things have been updated because now the and condition is '^' maybe can you please check and say

[@anayaturrehman976]

Love u

[@mkthakral]

In real life also, John likes Mary and Marry does not like John.

[@IndianTige1]

i dont even know wtf is john and mary

[@jubayeralam8358]

John likes chicks tho

[@khushal_18]

John likes chicks 💀

[@karma_kar9623]

It's always John likes Mary never Mary likes John 😢

[@techdose4u]

😂 figure it out dude

[@mkthakral]

The "OR" example seems wrong, the "OR" condition should be applied on query, not on answer. The shared "OR" example seems to be of "AND" condition.