It's often useful to compute the total data size of a binary array.
Sample implementation:

  int64_t total_values_length() const {
    return raw_value_offsets_[length() + data_->offset] - raw_value_offsets_[data_->offset];
  }

Reporter: Antoine Pitrou / @pitrou
Assignee: Wes McKinney / @wesm

Related issues:

• [C++] [Python] Proposal for several Array utility functions (is related to)

PRs and other links:

• GitHub Pull Request #7426
• GitHub Pull Request #7431

_{Note: This issue was originally created as ARROW-9116. Please see the migration documentation for further details.}