Method Populate

cpp/src/arrow/compute/row/grouper.cc:395–397

  }

  Status Populate(const ExecSpan& batch, int64_t offset, int64_t length) override {
    return ConsumeImpl(batch, offset, length, GrouperMode::kPopulate).status();
  }

  Result<Datum> Consume(const ExecSpan& batch, int64_t offset, int64_t length) override {
    return ConsumeImpl(batch, offset, length, GrouperMode::kConsume);