Module arrow_extendr::to

Convert arrow-rs structs into an Robj

The traits ToArrowRobj and IntoArrowRobj provide the methods to_arrow_robj() and into_arrow_robj() respectively. The former takes a reference to self whereas the latter consumes self.

Prefer to_arrow_robj() for all structs except ArrowArrayStreamReader.

fn array_to_robj() -> Result<Robj> {
    let array = Int32Array::from(vec![Some(1), None, Some(3)]);
    array.to_arrow_robj()
}

arrow-rs struct	R object
ArrayData	nanoarrow_array
PrimitiveArray<T>	nanoarrow_array
Field	nanoarrow_schema
DataType	nanoarrow_schema
Schema	nanoarrow_schema
RecordBatch	nanoarrow_array_stream
ArrowArrayStreamReader	nanoarrow_array_stream

Traits

• IntoArrowRobj
  Convert an Arrow struct to an Robj
• ToArrowRobj
  Convert an Arrow struct to an Robj

Functions

• allocate_array
  Calls nanoarrow::nanoarrow_allocate_array()
• allocate_array_stream
  Calls nanoarrow::nanoarrow_allocate_array_stream()
• allocate_schema
  Calls nanoarrow::nanoarrow_allocate_schema()
• move_pointer
  Calls nanoarrow::nanoarrow_pointer_move()
• set_array_schema
  Calls nanoarrow::nanoarrow_array_set_schema()