diff options
Diffstat (limited to 'prolog/problems')
| -rw-r--r-- | prolog/problems/lists/last_elem_2/common.py | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/prolog/problems/lists/last_elem_2/common.py b/prolog/problems/lists/last_elem_2/common.py index 1dd3c82..30b15bc 100644 --- a/prolog/problems/lists/last_elem_2/common.py +++ b/prolog/problems/lists/last_elem_2/common.py @@ -97,7 +97,7 @@ def hint(code, aux_code): return [{'id': 'list_returned'}] # missing/failed base case - if not prolog.engine.ask_one(engine_id, 'last_elem([qQ], qQ)'): + if not prolog.engine.ask_truth(engine_id, 'last_elem([qQ], qQ)'): return [{'id': 'base_case'}] # target predicate seems to always be false |