remove : prolog -


i trying compile csp.pl "computational intelligence book" solves constraint satisfaction problem. want use base solve crossword puzzle generator.

but when try run code gives 

 existence error in user:remove/3 ! procedure user:remove/3 not exist ! goal:  user:remove([1,2,3,4],3,_127) | ?- :-

i think remove not built-in predicate

% select(e,l,l1) selects first element of % l matches e, l1 being remaining % elements. select(d,doms,odoms) :-    remove(d,doms,odoms), !.  % choose(e,l,l1) chooses element of % l matches e, l1 being remaining % elements. choose(d,doms,odoms) :-    remove(d,doms,odoms).

this part of code... can please me fix issue... code should execute since in textbook claimed hv run on programs..

please help

i don't think remove part of prolog library -- not swi prolog. list library here.

there predicate delete same thing code uses remove for. find-and-replace , should work.


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