romainfrancois opened a new pull request #8125:
URL: https://github.com/apache/arrow/pull/8125
R follow up from #7272
The current `$select()` uses a more familiar (though more expensive)
tidyselect interface:
``` r
library(arrow, warn.conflicts = FALSE)
tab <- Table$create(x1 = 1:2, x2 = 3:4, y = 5:6)
# lower level 0-based indices
tab$SelectColumns(0:1)
#> Table
#> 2 rows x 2 columns
#> $x1 <int32>
#> $x2 <int32>
# higher level tidyselect based
tab$select(starts_with("x"))
#> Table
#> 2 rows x 2 columns
#> $x1 <int32>
#> $x2 <int32>
```
<sup>Created on 2020-09-07 by the [reprex
package](https://reprex.tidyverse.org) (v0.3.0.9001)</sup>
Do we want both ? `$select()` is used e.g. by the `read_csv(col_select=)`
argument.
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