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reverse(+List, ?Reversed)
Succeeds if Reversed is the reversed list List.
- +List
- A List.
- ?Reversed
- List or variable.
Description
The List is reversed and the resulting list is unified with Reverse.
The definition of this Prolog library predicate is:
reverse(List, Rev) :-
reverse(List, Rev, []).
reverse([], L, L).
reverse([H|T], L, SoFar) :-
reverse(T, L, [H|SoFar]).
This predicate does not perform any type testing functions.
Modes and Determinism
Fail Conditions
Fails if Reverse does not unify with the reversed version of List.
Resatisfiable
No.
Examples
Success:
[eclipse]: reverse([1,2,3,4,5], X).
X = [5, 4, 3, 2, 1]
yes.
See Also
append / 3, member / 2