Create and modify nanoarrow buffers — nanoarrow_buffer_init • nanoarrow

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)
#> [1] 1 2 3 4 5