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Prolog Source | 1988-06-21 | 375 b | 19 lines |
- /*
- Turbo Prolog 2.0 Chapter 8, Example Program 2
-
- Copyright (c) 1986, 88 by Borland International, Inc
-
- */
-
- domains
- list = integer* /* or whatever type you want to use */
-
- predicates
- length_of(list, integer)
-
- clauses
- length_of([], 0).
- length_of([_|T], L) :- length_of(T, TailLength),
- L = TailLength + 1.
-
-