Function Bitmap

cpp/src/arrow/type.h:110–110

  static BufferSpec FixedWidth(int64_t w) { return BufferSpec{FIXED_WIDTH, w}; }
  static BufferSpec VariableWidth() { return BufferSpec{VARIABLE_WIDTH, -1}; }
  static BufferSpec Bitmap() { return BufferSpec{BITMAP, -1}; }
  static BufferSpec AlwaysNull() { return BufferSpec{ALWAYS_NULL, -1}; }

  /// A vector of buffer layout specifications, one for each expected buffer