krlmlr opened a new issue, #347:
URL: https://github.com/apache/arrow-nanoarrow/issues/347

   - Should we allow `infer_nanoarrow_schema()` on schema objects?
   - Should we allow `infer_nanoarrow_ptype()` on R objects, effectively 
emulating data roundtrip?
   
   For DBI.
   
   ``` r
   library(nanoarrow)
   
   df <- data.frame(a = 1:3, b = 4.5, c = "five")
   schema <- nanoarrow::infer_nanoarrow_schema(df)
   nanoarrow::infer_nanoarrow_schema(schema)
   #> Error in infer_nanoarrow_schema.default(schema): Can't infer Arrow type 
for object of class nanoarrow_schema
   nanoarrow::infer_nanoarrow_ptype(df)
   #> Error in nanoarrow::infer_nanoarrow_ptype(df): `x` must be a 
nanoarrow_schema(), nanoarrow_array(), or nanoarrow_array_stream()
   tibble::as_tibble(nanoarrow::infer_nanoarrow_ptype(schema))
   #> # A tibble: 0 × 3
   #> # ℹ 3 variables: a <int>, b <dbl>, c <chr>
   ```
   
   <sup>Created on 2023-12-25 with [reprex 
v2.0.2](https://reprex.tidyverse.org)</sup>


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