dragosmg commented on pull request #12357:
URL: https://github.com/apache/arrow/pull/12357#issuecomment-1035531392
`NA` will be "contagious" in arrow's `tz()` binding (as opposed to
`lubridate::tz()` where they aren't):
``` r
suppressMessages(library(arrow))
suppressMessages(library(lubridate))
suppressMessages(library(dplyr))
df <- tibble(
x = as.POSIXct(c("2022-02-07", NA), tz = "Pacific/Marquesas")
)
df %>%
record_batch() %>%
mutate(timezone_x = tz(x)) %>%
collect()
#> # A tibble: 2 × 2
#> x timezone_x
#> <dttm> <chr>
#> 1 2022-02-07 00:00:00 UTC
#> 2 NA NA
df %>%
mutate(timezone_x = tz(x))
#> # A tibble: 2 × 2
#> x timezone_x
#> <dttm> <chr>
#> 1 2022-02-07 00:00:00 Pacific/Marquesas
#> 2 NA Pacific/Marquesas
```
<sup>Created on 2022-02-10 by the [reprex
package](https://reprex.tidyverse.org) (v2.0.1)</sup>
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