[GitHub] [arrow-nanoarrow] paleolimbot commented on issue #55: [R] Representation of BLOBs

["paleolimbot (via GitHub)" <gi...@apache.org>]

paleolimbot commented on issue #55:
URL: https://github.com/apache/arrow-nanoarrow/issues/55#issuecomment-1582961904

   I forget if this was solved in 0.1 or 0.2, but I believe this is solved now:
   
   ``` r
   library(nanoarrow)
   
   data <- data.frame(
     a = 1:3,
     b = 2.5,
     c = "three",
     stringsAsFactors = FALSE
   )
   data$d <- blob::blob(as.raw(1:10))
   
   array <- as_nanoarrow_array(data)
   array$children$d
   #> <nanoarrow_array binary[3]>
   #>  $ length    : int 3
   #>  $ null_count: int 0
   #>  $ offset    : int 0
   #>  $ buffers   :List of 3
   #>   ..$ :<nanoarrow_buffer validity<bool>[0][0 b]> ``
   #>   ..$ :<nanoarrow_buffer data_offset<int32>[4][16 b]> `0 10 20 30`
   #>   ..$ :<nanoarrow_buffer data<binary>[30 b]> `01 02 03 04 05 06 07 08 09 0a ...`
   #>  $ dictionary: NULL
   #>  $ children  : list()
   
   convert_array(array$children$d)
   #> <blob[3]>
   #> [1] blob[10 B] blob[10 B] blob[10 B]
   ```
   
   <sup>Created on 2023-06-08 with [reprex v2.0.2](https://reprex.tidyverse.org)</sup>


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