Różnice między wybraną wersją a wersją aktualną.
| — |
pl:prolog:pllib:cut [2019/06/27 15:50] (aktualna) |
||
|---|---|---|---|
| Linia 1: | Linia 1: | ||
| + | ====== Cut ====== | ||
| + | {{tag>cut}} | ||
| + | ===== Description ===== | ||
| + | Example how to use cut predicate | ||
| + | |||
| + | **Source**: Adventure in Prolog (on-line tutorial) | ||
| + | ===== Download ===== | ||
| + | Program source code: {{cut.pl}} | ||
| + | ===== Listing ===== | ||
| + | <code prolog> | ||
| + | data(one). | ||
| + | data(two). | ||
| + | data(three). | ||
| + | |||
| + | cut_test_a(X) :- | ||
| + | data(X). | ||
| + | cut_test_a('last clause'). | ||
| + | |||
| + | cut1:-cut_test_a(X), write(X), nl, fail. | ||
| + | |||
| + | |||
| + | cut_test_b(X) :- | ||
| + | data(X), | ||
| + | !. | ||
| + | cut_test_b('last clause'). | ||
| + | |||
| + | cut2:-cut_test_b(X), write(X), nl, fail. | ||
| + | |||
| + | cut_test_c(X,Y) :- | ||
| + | data(X), | ||
| + | !, | ||
| + | data(Y). | ||
| + | cut_test_c('last clause'). | ||
| + | |||
| + | cut3:-cut_test_c(X,Y), write(X-Y), nl, fail. | ||
| + | |||
| + | </code> | ||
| + | ===== Comments ===== | ||
