westonpace commented on code in PR #15083:
URL: https://github.com/apache/arrow/pull/15083#discussion_r1085585146
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cpp/src/arrow/compute/exec.h:
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@@ -174,7 +175,10 @@ struct ARROW_EXPORT ExecBatch {
explicit ExecBatch(const RecordBatch& batch);
- static Result<ExecBatch> Make(std::vector<Datum> values);
+ /// \brief Infer the ExecBatch length from values.
+ static Result<int64_t> InferLength(const std::vector<Datum>& values);
Review Comment:
```suggestion
/// \brief Infer the ExecBatch length from values.
///
/// \return the inferred length of the batch. If there are no values in
the batch
/// then kEmptyInput is returned. If the values in the batch
have
/// different lengths then kInvalidValues is returned.
static Result<int64_t> InferLength(const std::vector<Datum>& values);
```
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