Differences
This shows you the differences between two versions of the page.
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pp:c08 [2017/05/11 08:14] pdmatei created |
pp:c08 [2018/04/09 19:29] (current) mmihai |
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| Line 204: | Line 204: | ||
| <code prolog> | <code prolog> | ||
| len(void,R) :- R = 0. | len(void,R) :- R = 0. | ||
| - | len(cons(_,T),R) :- tail(L,T), len(T,R1), R is R1 + 1. | + | len(cons(_,T),R) :- len(T,R1), R is R1 + 1. |
| </code> | </code> | ||
| Line 211: | Line 211: | ||
| <code prolog> | <code prolog> | ||
| len(void,0). | len(void,0). | ||
| - | len(cons(_,T),R) :- tail(L,T), len(T,R1), R is R1 + 1. | + | len(cons(_,T),R) :- len(T,R1), R is R1 + 1. |
| </code> | </code> | ||