explain the effect of the cut (!) predicates in PROLOG?

**franknagy** · Oct 12 '11, 06:47 AM

Usage of cut after repeat-fail constructs

The cut opeator (denoted by !) stops the backtracking back to it.

Code:

repeat,
  possible_values(X),
  do_something(X,Y),
  check(X),
!,
continue_task(Y),

The cut in the above fragment prevents the backtracking to

Code:

do_something(X,Y)

in case of failed

Code:

continue_task(Y)

.
_____________
Hint

Code:

PREDICATES
  nondeterm repeat
CLAUSES
  repeat.
  repeat if repeat.

Regards
Frank

explain the effect of the cut (!) predicates in PROLOG?

explain the effect of the cut (!) predicates in PROLOG?

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