paleolimbot commented on code in PR #14922:
URL: https://github.com/apache/arrow/pull/14922#discussion_r1058010293
##########
r/R/array.R:
##########
@@ -450,6 +440,44 @@ StructArray <- R6Class("StructArray",
)
)
+StructArray$create <- function(...) {
+ dots <- list2(...)
Review Comment:
I'm sorry for forgetting about this thread! I think Will nailed it...the
easiest way around `record_batch()`'s auto-splicing of data.frames from unnamed
arguments thing is just to give all the arguments names. Maybe using
`rlang::dots_list(..., .named = TRUE)`?
``` r
library(arrow, warn.conflicts = FALSE)
struct_array <- function(...) {
args <- rlang::dots_list(..., .named = TRUE)
batch <- record_batch(!!! args)
array_ptr <- arrow:::allocate_arrow_array()
schema_ptr <- arrow:::allocate_arrow_schema()
batch$export_to_c(array_ptr, schema_ptr)
Array$import_from_c(array_ptr, schema_ptr)
}
struct_array(Array$create(1), Array$create(2))
#> StructArray
#> <struct<Array$create(1): double, Array$create(2): double>>
#> -- is_valid: all not null
#> -- child 0 type: double
#> [
#> 1
#> ]
#> -- child 1 type: double
#> [
#> 2
#> ]
```
<sup>Created on 2022-12-27 with [reprex
v2.0.2](https://reprex.tidyverse.org)</sup>
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