bool casereader_peek (struct casereader *, casenumber, struct ccase *)
WARN_UNUSED_RESULT;
+bool casereader_is_empty (struct casereader *);
bool casereader_error (const struct casereader *);
void casereader_force_error (struct casereader *);
struct casereader *
casereader_create_translator (struct casereader *, size_t output_value_cnt,
- void (*translate) (const struct ccase *input,
+ void (*translate) (struct ccase *input,
struct ccase *output,
void *aux),
bool (*destroy) (void *aux),