Function mutable_data

cpp/src/arrow/buffer.h:251–258

\brief Return a writable pointer to the buffer's data The buffer has to be a mutable CPU buffer (`is_cpu()` and `is_mutable()` are true). Otherwise, an assertion may be thrown or a null pointer may be returned. To get the buffer's mutable data address regardless of its device, call `mutable_address()`.

  /// To get the buffer's mutable data address regardless of its device, call
  /// `mutable_address()`.
  uint8_t* mutable_data() {
#ifndef NDEBUG
    CheckCPU();
    CheckMutable();
#endif
    return ARROW_PREDICT_TRUE(is_cpu_ && is_mutable_) ? const_cast<uint8_t*>(data_)
                                                      : NULLPTR;
  }

  /// \brief Return a writable pointer to the buffer's data cast to a specific type
  ///