nanoarrow_buffer_init: Create and modify nanoarrow buffers

In nanoarrow: Interface to the 'nanoarrow' 'C' Library

Create and modify nanoarrow buffers

Description

Create and modify nanoarrow buffers

Usage

nanoarrow_buffer_init()

nanoarrow_buffer_append(buffer, new_buffer)

convert_buffer(buffer, to = NULL)

Arguments

buffer, new_buffer	nanoarrow_buffers.
to	A target prototype object describing the type to which array should be converted, or NULL to use the default conversion as returned by infer_nanoarrow_ptype(). Alternatively, a function can be passed to perform an alternative calculation of the default ptype as a function of array and the default inference of the prototype.

Value

• nanoarrow_buffer_init(): An object of class 'nanoarrow_buffer'

• nanoarrow_buffer_append(): Returns buffer, invisibly. Note that buffer is modified in place by reference.

Examples

buffer <- nanoarrow_buffer_init()
nanoarrow_buffer_append(buffer, 1:5)

array <- nanoarrow_array_modify(
  nanoarrow_array_init(na_int32()),
  list(length = 5, buffers = list(NULL, buffer))
)
as.vector(array)

nanoarrow documentation built on Sept. 30, 2023, 1:06 a.m.