Function RangesToLengths

cpp/src/arrow/util/byte_size_test.cc:139–142

}

std::shared_ptr<Array> RangesToLengths(const std::vector<ExpectedRange>& ranges) {
  return ExpectedRangesToArray(ranges,
                               [](const ExpectedRange& range) { return range.length; });
}

// We can't validate the buffer addresses exactly because they are unpredictable pointer
// values.  However, when multiple ranges come from the same buffer we can validate that