Function block_data

cpp/src/arrow/compute/key_map_internal.h:132–134

  }

  const uint8_t* block_data(uint32_t block_id, int num_block_bytes) const {
    return block_data(blocks_->data(), block_id, num_block_bytes);
  }

  uint8_t* mutable_block_data(uint32_t block_id, int num_block_bytes) {
    return mutable_block_data(blocks_->mutable_data(), block_id, num_block_bytes);